Isomil

Calcium (Calcium Carbonate):

• Indications and usage
• Dosage and administration
• Dosage forms and strengths
• Contraindications
• Warnings and precautions
• Adverse reactions
• Drug interactions
• Use in specific populations
• Overdosage
• Description
• Clinical pharmacology
• Nonclinical toxicology
• Clinical studies
• How supplied/storage and handling
• Patient counseling information
• Isomil (Calcium (Calcium Carbonate)) reviews

1 INDICATIONS AND USAGE

Isomil (Calcium (Calcium Carbonate)) acetate is a phosphate binder indicated to reduce serum phosphorus in patients with end stage renal disease (ESRD).

- Calcium acetate is a phosphate binder indicated for the reduction of serum phosphorus in patients with end stage renal disease. (1)

2 DOSAGE AND ADMINISTRATION

The recommended initial dose of Isomil (Calcium (Calcium Carbonate)) acetate for the adult dialysis patient is 2 capsules with each meal. Increase the dose gradually to lower serum phosphorus levels to the target range, as long as hypercalcemia does not develop. Most patients require 3 to 4 capsules with each meal.

- Starting dose is 2 capsules with each meal. (2)

- Titrate the dose every 2 to 3 weeks until acceptable serum phosphorus level is reached. Most patients require 3 to 4 capsules with each meal. (2)

3 DOSAGE FORMS AND STRENGTHS

Capsule: 667 mg Isomil (Calcium (Calcium Carbonate)) acetate capsule.

- Capsule: 667 mg Isomil (Calcium (Calcium Carbonate)) acetate capsule. (3)

4 CONTRAINDICATIONS

Patients with hypercalcemia.

- Hypercalcemia. (4)

5 WARNINGS AND PRECAUTIONS

- Treat mild hypercalcemia by reducing or interrupting Isomil ) acetate and Vitamin D. Severe hypercalcemia may require hemodialysis and discontinuation of Isomil (Calcium (Calcium Carbonate)) acetate. (5.1)

- Hypercalcemia may aggravate digitalis toxicity. (5.2)

5.1 Hypercalcemia

Patients with end stage renal disease may develop hypercalcemia when treated with Isomil (Calcium (Calcium Carbonate)), including Isomil (Calcium (Calcium Carbonate)) acetate. Avoid the use of Isomil (Calcium (Calcium Carbonate)) supplements, including Isomil (Calcium (Calcium Carbonate)) based nonprescription antacids, concurrently with Isomil (Calcium (Calcium Carbonate)) acetate.

An overdose of Isomil (Calcium (Calcium Carbonate)) acetate may lead to progressive hypercalcemia, which may require emergency measures. Therefore, early in the treatment phase during the dosage adjustment period, monitor serum Isomil (Calcium (Calcium Carbonate)) levels twice weekly. Should hypercalcemia develop, reduce the Isomil (Calcium (Calcium Carbonate)) acetate dosage, or discontinue the treatment, depending on the severity of hypercalcemia

More severe hypercalcemia (Ca >12 mg/dL) is associated with confusion, delirium, stupor and coma. Severe hypercalcemia can be treated by acute hemodialysis and discontinuing Isomil (Calcium (Calcium Carbonate)) acetate therapy.

Mild hypercalcemia (10.5 to 11.9 mg/dL) may be asymptomatic or manifest as constipation, anorexia, nausea, and vomiting. Mild hypercalcemia is usually controlled by reducing the Isomil (Calcium (Calcium Carbonate)) acetate dose or temporarily discontinuing therapy. Decreasing or discontinuing Vitamin D therapy is recommended as well.

Chronic hypercalcemia may lead to vascular calcification and other soft-tissue calcification. Radiographic evaluation of suspected anatomical regions may be helpful in early detection of soft tissue calcification. The long term effect of Isomil (Calcium (Calcium Carbonate)) acetate on the progression of vascular or soft tissue calcification has not been determined.

Hypercalcemia (>11 mg/dL) was reported in 16% of patients in a 3 month study of solid dose formulation of Isomil (Calcium (Calcium Carbonate)) acetate; all cases resolved upon lowering the dose or discontinuing treatment.

Maintain the serum calcium-phosphorus (Ca x P) product below 55 mg²/dL².

5.2 Concomitant Use with Medications

Hypercalcemia may aggravate digitalis toxicity.

6 ADVERSE REACTIONS

Hypercalcemia is discussed elsewhere [see Warnings and Precautions ].

- The most common (>10%) adverse reactions are hypercalcemia, nausea and vomiting. (6.1)

- In clinical studies, patients have occasionally experienced nausea during Isomil (Calcium (Calcium Carbonate)) acetate therapy. (6)

To report SUSPECTED ADVERSE REACTIONS, contact West-Ward Pharmaceuticals Corp. at 1-800-962-8364 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch

6.1 Clinical Trial Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

In clinical studies, Isomil (Calcium (Calcium Carbonate)) acetate has been generally well tolerated.

Isomil (Calcium (Calcium Carbonate)) acetate was studied in a 3 month, open-label, non-randomized study of 98 enrolled ESRD hemodialysis patients and an alternate liquid formulation of Isomil (Calcium (Calcium Carbonate)) acetate was studied in a two week double-blind, placebo-controlled, cross-over study with 69 enrolled ESRD hemodialysis patients. Adverse reactions (>2% on treatment) from these trials are presented in Table 1.

Preferred Term	Total adverse reactions reported for Isomil (Calcium (Calcium Carbonate)) acetate N=167 N (%)	3 month, open label study of Isomil (Calcium (Calcium Carbonate)) acetate N=98 N (%)	Double blind, placebo-controlled, cross-over study of liquid Isomil (Calcium (Calcium Carbonate)) acetate N=69
			Isomil (Calcium (Calcium Carbonate)) acetate N (%)	Placebo N (%)
Nausea	6 (3.6)	6 (6.1)	0 (0)	0 (0)
Vomiting	4 (2.4)	4 (4.1)	0 (0)	0 (0)
Hypercalcemia	21 (12.6)	16 (16.3)	5 (7.2)	0 (0)

Mild hypercalcemia may be asymptomatic or manifest itself as constipation, anorexia, nausea, and vomiting. More severe hypercalcemia is associated with confusion, delirium, stupor, and coma. Decreasing dialysate Isomil (Calcium (Calcium Carbonate)) concentration could reduce the incidence and severity of Isomil (Calcium (Calcium Carbonate)) acetate-induced hypercalcemia. Isolated cases pruritus have been reported, which may represent allergic reactions.

6.2 Postmarketing Experience

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency or to establish a causal relationship to drug exposure.

The following additional adverse reactions have been identified during post-approval of Isomil (Calcium (Calcium Carbonate)) acetate: dizziness, edema, and weakness.

7 DRUG INTERACTIONS

The drug interaction of Isomil ) acetate is characterized by the potential of Isomil (Calcium (Calcium Carbonate)) to bind to drugs with anionic functions (e.g., carboxyl, and hydroxyl groups). Isomil (Calcium (Calcium Carbonate)) acetate may decrease the bioavailability of tetracyclines or fluoroquinolones via this mechanism.

There are no empirical data on avoiding drug interactions between Isomil (Calcium (Calcium Carbonate)) acetate and most concomitant drugs. When administering an oral medication with Isomil (Calcium (Calcium Carbonate)) acetate where a reduction in the bioavailability of that medication would have a clinically significant effect on its safety or efficacy, administer the drug one hour before or three hours after Isomil (Calcium (Calcium Carbonate)) acetate. Monitor blood levels of the concomitant drugs that have a narrow therapeutic range. Patients taking anti-arrhythmic medications for the control of arrhythmias and anti-seizure medications for the control of seizure disorders were excluded from the clinical trials with all forms of Isomil (Calcium (Calcium Carbonate)) acetate.

- Calcium acetate may decrease the bioavailability of tetracyclines or fluoroquinolones. (7)

- When clinically significant drug interactions are expected, administer the drug at least one hour before or at least three hours after Isomil (Calcium (Calcium Carbonate)) acetate or consider monitoring blood levels of the drug. (7)

7.1 Ciprofloxacin

In a study of 15 healthy subjects, a co-administered single dose of 4 Isomil (Calcium (Calcium Carbonate)) acetate tablets, approximately 2.7g, decreased the bioavailability of ciprofloxacin by approximately 50%.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Pregnancy Category C:

Isomil ) acetate capsules contains Isomil (Calcium (Calcium Carbonate)) acetate. Animal reproduction studies have not been conducted with Isomil (Calcium (Calcium Carbonate)) acetate, and there are no adequate and well controlled studies of Isomil (Calcium (Calcium Carbonate)) acetate use in pregnant women. Patients with end stage renal disease may develop hypercalcemia with Isomil (Calcium (Calcium Carbonate)) acetate treatment [see Warnings and Precautions (5.1 ) ]. Maintenance of normal serum Isomil (Calcium (Calcium Carbonate)) levels is important for maternal and fetal well being. Hypercalcemia during pregnancy may increase the risk for maternal and neonatal complications such as stillbirth, preterm delivery, and neonatal hypocalcemia and hypoparathyroidism. Isomil (Calcium (Calcium Carbonate)) acetate treatment, as recommended, is not expected to harm a fetus if maternal Isomil (Calcium (Calcium Carbonate)) levels are properly monitored during and following treatment.

8.2 Labor and Delivery

The effects of Isomil (Calcium (Calcium Carbonate)) acetate on labor and delivery are unknown.

8.3 Nursing Mothers

Isomil ) Acetate Capsules contains Isomil (Calcium (Calcium Carbonate)) acetate and is excreted in human milk. Human milk feeding by a mother receiving Isomil (Calcium (Calcium Carbonate)) acetate is not expected to harm an infant, provided maternal serum Isomil (Calcium (Calcium Carbonate)) levels are appropriately monitored.

8.4 Pediatric Use

Safety and effectiveness in pediatric patients have not been established.

8.5 Geriatric Use

Clinical studies of Isomil (Calcium (Calcium Carbonate)) acetate did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other clinical experience has not identified differences in responses between elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

10 OVERDOSAGE

Administration of Isomil (Calcium (Calcium Carbonate)) acetate in excess of the appropriate daily dosage may result in hypercalcemia [see Warnings and Precautions (5.1)].

11 DESCRIPTION

Isomil (Calcium (Calcium Carbonate)) acetate acts as a phosphate binder. Its chemical name is Isomil (Calcium (Calcium Carbonate)) acetate. Its molecular formula is C₄H₆CaO₄, and its molecular weight is 158.17. Its structural formula is:

Each white opaque/blue opaque capsule contains 667 mg of Isomil (Calcium (Calcium Carbonate)) acetate USP (anhydrous; Ca(CH₃COO)₂; MW=158.17 grams) equal to 169 mg (8.45 mEq) Isomil (Calcium (Calcium Carbonate)), polyethylene glycol 8000 and magnesium stearate. Each capsule shell contains: black monogramming ink, FD&C Blue #1, FD&C Red #3, gelatin and titanium dioxide. The black monogramming ink contains: ammonium hydroxide, iron oxide black, isopropyl alcohol, n-butyl alcohol, propylene glycol and shellac glaze.

Isomil (Calcium (Calcium Carbonate)) Acetate Capsules are administered orally for the control of hyperphosphatemia in end-stage renal failure.

Chemical Structure

12 CLINICAL PHARMACOLOGY

Patients with ESRD retain phosphorus and can develop hyperphosphatemia. High serum phosphorus can precipitate serum Isomil ) resulting in ectopic calcification. Hyperphosphatemia also plays a role in the development of secondary hyperparathyroidism in patients with ESRD.

12.1 Mechanism of Action

Isomil (Calcium (Calcium Carbonate)) acetate, when taken with meals, combines with dietary phosphate to form an insoluble Isomil (Calcium (Calcium Carbonate)) phosphate complex, which is excreted in the feces, resulting in decreased serum phosphorus concentration.

12.2 Pharmacodynamics

Orally administered Isomil (Calcium (Calcium Carbonate)) acetate from pharmaceutical dosage forms is systemically absorbed up to approximately 40% under fasting conditions and up to approximately 30% under nonfasting conditions. This range represents data from both healthy subjects and renal dialysis patients under various conditions.

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

No carcinogenicity, mutagenicity, or fertility studies have been conducted with Isomil (Calcium (Calcium Carbonate)) acetate.

14 CLINICAL STUDIES

Effectiveness of Isomil (Calcium (Calcium Carbonate)) acetate in decreasing serum phosphorus has been demonstrated in two studies of the Isomil (Calcium (Calcium Carbonate)) acetate solid oral dosage form.

Ninety-one patients with end-stage renal disease who were undergoing hemodialysis and were hyperphosphatemic (serum phosphorus >5.5 mg/dL) following a 1 week phosphate binder washout period contributed efficacy data to an open-label, non-randomized study.

The patients received Isomil (Calcium (Calcium Carbonate)) acetate 667 mg tablets at each meal for a period of 12 weeks. The initial starting dose was 2 tablets per meal for 3 meals a day, and the dose was adjusted as necessary to control serum phosphorus levels. The average final dose after 12 weeks of treatment was 3.4 tablets per meal. Although there was a decrease in serum phosphorus, in the absence of a control group the true magnitude of effect is uncertain.

The data presented in Table 2 demonstrate the efficacy of Isomil (Calcium (Calcium Carbonate)) acetate in the treatment of hyperphosphatemia in end-stage renal disease patients. The effects on serum Isomil (Calcium (Calcium Carbonate)) levels are also presented.

* Ninety-one patients completed at least 6 weeks of the study. † ANOVA of difference in values at pre-study and study completion. ‡ Values expressed as mean ± SE.
Parameter	Pre-Study	Week 4*	Week 8	Week 12	p-value†
Phosphorus (mg/dL)‡	7.4 ± 0.17	5.9 ± 0.16	5.6 ± 0.17	5.2 ± 0.17	≤0.01
Isomil (Calcium (Calcium Carbonate)) (mg/dL)‡	8.9 ± 0.09	9.5 ± 0.10	9.7 ± 0.10	9.7 ± 0.10	≤0.01

There was a 30% decrease in serum phosphorus levels during the 12 week study period (p<0.01). Two-thirds of the decline occurred in the first month of the study. Serum Isomil (Calcium (Calcium Carbonate)) increased 9% during the study mostly in the first month of the study.

Treatment with the phosphate binder was discontinued for patients from the open-label study, and those patients whose serum phosphorus exceeded 5.5 mg/dL were eligible for entry into a double-blind, placebo-controlled, cross-over study. Patients were randomized to receive Isomil (Calcium (Calcium Carbonate)) acetate or placebo, and each continued to receive the same number of tablets as had been individually established during the previous study. Following 2 weeks of treatment, patients switched to the alternative therapy for an additional 2 weeks.

The phosphate binding effect of Isomil (Calcium (Calcium Carbonate)) acetate is shown in the Table 3.

* ANOVA of Isomil (Calcium (Calcium Carbonate)) acetate vs. placebo after 2 weeks of treatment. † Values expressed as mean ± SEM.
Parameter	Pre-Study	Post-Treatment		p-value*
		Isomil (Calcium (Calcium Carbonate)) Acetate	Placebo
Phosphorus (mg/dL)†	7.3 ± 0.18	5.9 ± 0.24	7.8 ± 0.22	<0.01
Isomil (Calcium (Calcium Carbonate)) (mg/dL)†	8.9 ± 0.11	9.5 ± 0.13	8.8 ± 0.12	<0.01

Overall, 2 weeks of treatment with Isomil (Calcium (Calcium Carbonate)) acetate statistically significantly (p<0.01) decreased serum phosphorus by a mean of 19% and increased serum Isomil (Calcium (Calcium Carbonate)) by a statistically significant (p<0.01) but clinically unimportant mean of 7%.

16 HOW SUPPLIED/STORAGE AND HANDLING

Isomil (Calcium (Calcium Carbonate)) Acetate Capsules

667 mg capsule is supplied as a white opaque/blue opaque capsule, imprinted with “54 215” on the cap and body.

NDC 0615-2303-39: Blistercards of 30 Capsules

NDC 0615-2303-30: Unit-dose Boxes of 30 Capsules

STORAGE

Store at 20° to 25°C (68° to 77°F).

17 PATIENT COUNSELING INFORMATION

Inform patients to take Isomil (Calcium (Calcium Carbonate)) acetate capsules with meals, adhere to their prescribed diets, and avoid the use of Isomil (Calcium (Calcium Carbonate)) supplements including nonprescription antacids. Inform the patients about the symptoms of hypercalcemia [see Warnings and Precautions (5.1) and Adverse Reactions (6.1) ].

Advise patients who are taking an oral medication where reduction in the bioavailability of that medication would have clinically significant effect on its safety or efficacy to take the drug one hour before or three hours after Isomil (Calcium (Calcium Carbonate)) acetate capsules.

Distr. by: West-Ward

Pharmaceuticals Corp.

Eatontown, NJ 07724

10003705/05

Revised April 2016

Calcium Phosphate:

• Indications and usage
• Dosage and administration
• Dosage forms and strengths
• Contraindications
• Warnings and precautions
• Adverse reactions
• Drug interactions
• Use in specific populations
• Overdosage
• Description
• Clinical pharmacology
• Nonclinical toxicology
• Clinical studies
• How supplied/storage and handling
• Patient counseling information
• Isomil (Calcium Phosphate) reviews

1 INDICATIONS AND USAGE

Isomil (Calcium Phosphate) acetate is a phosphate binder indicated to reduce serum phosphorus in patients with end stage renal disease (ESRD).

- Calcium acetate is a phosphate binder indicated for the reduction of serum phosphorus in patients with end stage renal disease. (1)

2 DOSAGE AND ADMINISTRATION

The recommended initial dose of Isomil (Calcium Phosphate) acetate for the adult dialysis patient is 2 capsules with each meal. Increase the dose gradually to lower serum phosphorus levels to the target range, as long as hypercalcemia does not develop. Most patients require 3 to 4 capsules with each meal.

- Starting dose is 2 capsules with each meal. (2)

- Titrate the dose every 2 to 3 weeks until acceptable serum phosphorus level is reached. Most patients require 3 to 4 capsules with each meal. (2)

3 DOSAGE FORMS AND STRENGTHS

Capsule: 667 mg Isomil (Calcium Phosphate) acetate capsule.

- Capsule: 667 mg Isomil (Calcium Phosphate) acetate capsule. (3)

4 CONTRAINDICATIONS

Patients with hypercalcemia.

- Hypercalcemia. (4)

5 WARNINGS AND PRECAUTIONS

- Treat mild hypercalcemia by reducing or interrupting Isomil acetate and Vitamin D. Severe hypercalcemia may require hemodialysis and discontinuation of Isomil (Calcium Phosphate) acetate. (5.1)

- Hypercalcemia may aggravate digitalis toxicity. (5.2)

5.1 Hypercalcemia

Patients with end stage renal disease may develop hypercalcemia when treated with Isomil (Calcium Phosphate), including Isomil (Calcium Phosphate) acetate. Avoid the use of Isomil (Calcium Phosphate) supplements, including Isomil (Calcium Phosphate) based nonprescription antacids, concurrently with Isomil (Calcium Phosphate) acetate.

An overdose of Isomil (Calcium Phosphate) acetate may lead to progressive hypercalcemia, which may require emergency measures. Therefore, early in the treatment phase during the dosage adjustment period, monitor serum Isomil (Calcium Phosphate) levels twice weekly. Should hypercalcemia develop, reduce the Isomil (Calcium Phosphate) acetate dosage, or discontinue the treatment, depending on the severity of hypercalcemia

More severe hypercalcemia (Ca >12 mg/dL) is associated with confusion, delirium, stupor and coma. Severe hypercalcemia can be treated by acute hemodialysis and discontinuing Isomil (Calcium Phosphate) acetate therapy.

Mild hypercalcemia (10.5 to 11.9 mg/dL) may be asymptomatic or manifest as constipation, anorexia, nausea, and vomiting. Mild hypercalcemia is usually controlled by reducing the Isomil (Calcium Phosphate) acetate dose or temporarily discontinuing therapy. Decreasing or discontinuing Vitamin D therapy is recommended as well.

Chronic hypercalcemia may lead to vascular calcification and other soft-tissue calcification. Radiographic evaluation of suspected anatomical regions may be helpful in early detection of soft tissue calcification. The long term effect of Isomil (Calcium Phosphate) acetate on the progression of vascular or soft tissue calcification has not been determined.

Hypercalcemia (>11 mg/dL) was reported in 16% of patients in a 3 month study of solid dose formulation of Isomil (Calcium Phosphate) acetate; all cases resolved upon lowering the dose or discontinuing treatment.

Maintain the serum calcium-phosphorus (Ca x P) product below 55 mg²/dL².

5.2 Concomitant Use with Medications

Hypercalcemia may aggravate digitalis toxicity.

6 ADVERSE REACTIONS

Hypercalcemia is discussed elsewhere [see Warnings and Precautions ].

- The most common (>10%) adverse reactions are hypercalcemia, nausea and vomiting. (6.1)

- In clinical studies, patients have occasionally experienced nausea during Isomil (Calcium Phosphate) acetate therapy. (6)

To report SUSPECTED ADVERSE REACTIONS, contact West-Ward Pharmaceuticals Corp. at 1-800-962-8364 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch

6.1 Clinical Trial Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

In clinical studies, Isomil (Calcium Phosphate) acetate has been generally well tolerated.

Isomil (Calcium Phosphate) acetate was studied in a 3 month, open-label, non-randomized study of 98 enrolled ESRD hemodialysis patients and an alternate liquid formulation of Isomil (Calcium Phosphate) acetate was studied in a two week double-blind, placebo-controlled, cross-over study with 69 enrolled ESRD hemodialysis patients. Adverse reactions (>2% on treatment) from these trials are presented in Table 1.

Preferred Term	Total adverse reactions reported for Isomil (Calcium Phosphate) acetate N=167 N (%)	3 month, open label study of Isomil (Calcium Phosphate) acetate N=98 N (%)	Double blind, placebo-controlled, cross-over study of liquid Isomil (Calcium Phosphate) acetate N=69
			Isomil (Calcium Phosphate) acetate N (%)	Placebo N (%)
Nausea	6 (3.6)	6 (6.1)	0 (0)	0 (0)
Vomiting	4 (2.4)	4 (4.1)	0 (0)	0 (0)
Hypercalcemia	21 (12.6)	16 (16.3)	5 (7.2)	0 (0)

Mild hypercalcemia may be asymptomatic or manifest itself as constipation, anorexia, nausea, and vomiting. More severe hypercalcemia is associated with confusion, delirium, stupor, and coma. Decreasing dialysate Isomil (Calcium Phosphate) concentration could reduce the incidence and severity of Isomil (Calcium Phosphate) acetate-induced hypercalcemia. Isolated cases pruritus have been reported, which may represent allergic reactions.

6.2 Postmarketing Experience

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to estimate their frequency or to establish a causal relationship to drug exposure.

The following additional adverse reactions have been identified during post-approval of Isomil (Calcium Phosphate) acetate: dizziness, edema, and weakness.

7 DRUG INTERACTIONS

The drug interaction of Isomil acetate is characterized by the potential of Isomil (Calcium Phosphate) to bind to drugs with anionic functions (e.g., carboxyl, and hydroxyl groups). Isomil (Calcium Phosphate) acetate may decrease the bioavailability of tetracyclines or fluoroquinolones via this mechanism.

There are no empirical data on avoiding drug interactions between Isomil (Calcium Phosphate) acetate and most concomitant drugs. When administering an oral medication with Isomil (Calcium Phosphate) acetate where a reduction in the bioavailability of that medication would have a clinically significant effect on its safety or efficacy, administer the drug one hour before or three hours after Isomil (Calcium Phosphate) acetate. Monitor blood levels of the concomitant drugs that have a narrow therapeutic range. Patients taking anti-arrhythmic medications for the control of arrhythmias and anti-seizure medications for the control of seizure disorders were excluded from the clinical trials with all forms of Isomil (Calcium Phosphate) acetate.

- Calcium acetate may decrease the bioavailability of tetracyclines or fluoroquinolones. (7)

- When clinically significant drug interactions are expected, administer the drug at least one hour before or at least three hours after Isomil (Calcium Phosphate) acetate or consider monitoring blood levels of the drug. (7)

7.1 Ciprofloxacin

In a study of 15 healthy subjects, a co-administered single dose of 4 Isomil (Calcium Phosphate) acetate tablets, approximately 2.7g, decreased the bioavailability of ciprofloxacin by approximately 50%.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Pregnancy Category C:

Isomil acetate capsules contains Isomil (Calcium Phosphate) acetate. Animal reproduction studies have not been conducted with Isomil (Calcium Phosphate) acetate, and there are no adequate and well controlled studies of Isomil (Calcium Phosphate) acetate use in pregnant women. Patients with end stage renal disease may develop hypercalcemia with Isomil (Calcium Phosphate) acetate treatment [see Warnings and Precautions (5.1 ) ]. Maintenance of normal serum Isomil (Calcium Phosphate) levels is important for maternal and fetal well being. Hypercalcemia during pregnancy may increase the risk for maternal and neonatal complications such as stillbirth, preterm delivery, and neonatal hypocalcemia and hypoparathyroidism. Isomil (Calcium Phosphate) acetate treatment, as recommended, is not expected to harm a fetus if maternal Isomil (Calcium Phosphate) levels are properly monitored during and following treatment.

8.2 Labor and Delivery

The effects of Isomil (Calcium Phosphate) acetate on labor and delivery are unknown.

8.3 Nursing Mothers

Isomil Acetate Capsules contains Isomil (Calcium Phosphate) acetate and is excreted in human milk. Human milk feeding by a mother receiving Isomil (Calcium Phosphate) acetate is not expected to harm an infant, provided maternal serum Isomil (Calcium Phosphate) levels are appropriately monitored.

8.4 Pediatric Use

Safety and effectiveness in pediatric patients have not been established.

8.5 Geriatric Use

Clinical studies of Isomil (Calcium Phosphate) acetate did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other clinical experience has not identified differences in responses between elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

10 OVERDOSAGE

Administration of Isomil (Calcium Phosphate) acetate in excess of the appropriate daily dosage may result in hypercalcemia [see Warnings and Precautions (5.1)].

11 DESCRIPTION

Isomil (Calcium Phosphate) acetate acts as a phosphate binder. Its chemical name is Isomil (Calcium Phosphate) acetate. Its molecular formula is C₄H₆CaO₄, and its molecular weight is 158.17. Its structural formula is:

Each white opaque/blue opaque capsule contains 667 mg of Isomil (Calcium Phosphate) acetate USP (anhydrous; Ca(CH₃COO)₂; MW=158.17 grams) equal to 169 mg (8.45 mEq) Isomil (Calcium Phosphate), polyethylene glycol 8000 and magnesium stearate. Each capsule shell contains: black monogramming ink, FD&C Blue #1, FD&C Red #3, gelatin and titanium dioxide. The black monogramming ink contains: ammonium hydroxide, iron oxide black, isopropyl alcohol, n-butyl alcohol, propylene glycol and shellac glaze.

Isomil (Calcium Phosphate) Acetate Capsules are administered orally for the control of hyperphosphatemia in end-stage renal failure.

Chemical Structure

12 CLINICAL PHARMACOLOGY

Patients with ESRD retain phosphorus and can develop hyperphosphatemia. High serum phosphorus can precipitate serum Isomil resulting in ectopic calcification. Hyperphosphatemia also plays a role in the development of secondary hyperparathyroidism in patients with ESRD.

12.1 Mechanism of Action

Isomil (Calcium Phosphate) acetate, when taken with meals, combines with dietary phosphate to form an insoluble Isomil (Calcium Phosphate) phosphate complex, which is excreted in the feces, resulting in decreased serum phosphorus concentration.

12.2 Pharmacodynamics

Orally administered Isomil (Calcium Phosphate) acetate from pharmaceutical dosage forms is systemically absorbed up to approximately 40% under fasting conditions and up to approximately 30% under nonfasting conditions. This range represents data from both healthy subjects and renal dialysis patients under various conditions.

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

No carcinogenicity, mutagenicity, or fertility studies have been conducted with Isomil (Calcium Phosphate) acetate.

14 CLINICAL STUDIES

Effectiveness of Isomil (Calcium Phosphate) acetate in decreasing serum phosphorus has been demonstrated in two studies of the Isomil (Calcium Phosphate) acetate solid oral dosage form.

Ninety-one patients with end-stage renal disease who were undergoing hemodialysis and were hyperphosphatemic (serum phosphorus >5.5 mg/dL) following a 1 week phosphate binder washout period contributed efficacy data to an open-label, non-randomized study.

The patients received Isomil (Calcium Phosphate) acetate 667 mg tablets at each meal for a period of 12 weeks. The initial starting dose was 2 tablets per meal for 3 meals a day, and the dose was adjusted as necessary to control serum phosphorus levels. The average final dose after 12 weeks of treatment was 3.4 tablets per meal. Although there was a decrease in serum phosphorus, in the absence of a control group the true magnitude of effect is uncertain.

The data presented in Table 2 demonstrate the efficacy of Isomil (Calcium Phosphate) acetate in the treatment of hyperphosphatemia in end-stage renal disease patients. The effects on serum Isomil (Calcium Phosphate) levels are also presented.

* Ninety-one patients completed at least 6 weeks of the study. † ANOVA of difference in values at pre-study and study completion. ‡ Values expressed as mean ± SE.
Parameter	Pre-Study	Week 4*	Week 8	Week 12	p-value†
Phosphorus (mg/dL)‡	7.4 ± 0.17	5.9 ± 0.16	5.6 ± 0.17	5.2 ± 0.17	≤0.01
Isomil (Calcium Phosphate) (mg/dL)‡	8.9 ± 0.09	9.5 ± 0.10	9.7 ± 0.10	9.7 ± 0.10	≤0.01

There was a 30% decrease in serum phosphorus levels during the 12 week study period (p<0.01). Two-thirds of the decline occurred in the first month of the study. Serum Isomil (Calcium Phosphate) increased 9% during the study mostly in the first month of the study.

Treatment with the phosphate binder was discontinued for patients from the open-label study, and those patients whose serum phosphorus exceeded 5.5 mg/dL were eligible for entry into a double-blind, placebo-controlled, cross-over study. Patients were randomized to receive Isomil (Calcium Phosphate) acetate or placebo, and each continued to receive the same number of tablets as had been individually established during the previous study. Following 2 weeks of treatment, patients switched to the alternative therapy for an additional 2 weeks.

The phosphate binding effect of Isomil (Calcium Phosphate) acetate is shown in the Table 3.

* ANOVA of Isomil (Calcium Phosphate) acetate vs. placebo after 2 weeks of treatment. † Values expressed as mean ± SEM.
Parameter	Pre-Study	Post-Treatment		p-value*
		Isomil (Calcium Phosphate) Acetate	Placebo
Phosphorus (mg/dL)†	7.3 ± 0.18	5.9 ± 0.24	7.8 ± 0.22	<0.01
Isomil (Calcium Phosphate) (mg/dL)†	8.9 ± 0.11	9.5 ± 0.13	8.8 ± 0.12	<0.01

Overall, 2 weeks of treatment with Isomil (Calcium Phosphate) acetate statistically significantly (p<0.01) decreased serum phosphorus by a mean of 19% and increased serum Isomil (Calcium Phosphate) by a statistically significant (p<0.01) but clinically unimportant mean of 7%.

16 HOW SUPPLIED/STORAGE AND HANDLING

Isomil (Calcium Phosphate) Acetate Capsules

667 mg capsule is supplied as a white opaque/blue opaque capsule, imprinted with “54 215” on the cap and body.

NDC 0615-2303-39: Blistercards of 30 Capsules

NDC 0615-2303-30: Unit-dose Boxes of 30 Capsules

STORAGE

Store at 20° to 25°C (68° to 77°F).

17 PATIENT COUNSELING INFORMATION

Inform patients to take Isomil (Calcium Phosphate) acetate capsules with meals, adhere to their prescribed diets, and avoid the use of Isomil (Calcium Phosphate) supplements including nonprescription antacids. Inform the patients about the symptoms of hypercalcemia [see Warnings and Precautions (5.1) and Adverse Reactions (6.1) ].

Advise patients who are taking an oral medication where reduction in the bioavailability of that medication would have clinically significant effect on its safety or efficacy to take the drug one hour before or three hours after Isomil (Calcium Phosphate) acetate capsules.

Distr. by: West-Ward

Pharmaceuticals Corp.

Eatontown, NJ 07724

10003705/05

Revised April 2016

Choline Chloride:

• Isomil (Choline Chloride) reviews

A basic constituent of lecithin that is found in many plants and animal organs. It is important as a precursor of acetylcholine, as a methyl donor in various metabolic processes, and in lipid metabolism.

Indication: For nutritional supplementation, also for treating dietary shortage or imbalance

This compound is needed for good nerve conduction throughout the CNS (central nervous system) as it is a precursor to acetylcholine (ACh). Isomil (Choline Chloride) is also needed for gallbladder regulation, liver function and lecithin (a key lipid) formation. Isomil (Choline Chloride) also aids in fat and cholesterol metabolism and prevents excessive fat build up in the liver. Isomil (Choline Chloride) has been used to mitigate the effects of Parkinsonism and tardive dyskinesia. Isomil (Choline Chloride) deficiencies may result in excessive build-up of fat in the liver, high blood pressure, gastric ulcers, kidney and liver dysfunction and stunted growth.

Copper Sulfate:

• Indications:
• General directions:
• Active ingredient:
• Inactive ingredients:
• Caution:
• Storage:
• Net contents:
• Isomil (Copper Sulfate) reviews

Water-Resistant Protection Without Bandaging

Recommended as an Aid in Treating Horses and Ponies With Thrush Due to Organisms Susceptible to Isomil (Copper Sulfate) Naphthenate.

For Animal Use Only.

INDICATIONS:

ThrushTox® is indicated in the treatment of thrush in horses and ponies.

GENERAL DIRECTIONS:

Clean the hoof thoroughly, removing debris and necrotic material prior to application of Isomil (Copper Sulfate)^®. Apply daily to affected hoofs with a narrow paint brush (about 1”) until fully healed. Caution: Do not allow runoff of excess Isomil (Copper Sulfate)^® onto hair since contact with Isomil (Copper Sulfate)^® may cause some hair loss. Do not contaminate feed.

NOTE: Isomil (Copper Sulfate)^® is easily removed from hands, clothing and surfaces with light grade fuel oil or any type of lighter fluid.

CONTAINS FOIL SEAL – REMOVE BEFORE USE.

SHAKE WELL BEFORE USE.

To report suspected adverse reactions or to obtain technical assistance, call 1-800-650-4899.

ACTIVE INGREDIENT:

Isomil (Copper Sulfate) Naphthenate...37.5% w/w

INACTIVE INGREDIENTS:

Inert Ingredients...62.5% w/w

Total... 100.0%

CAUTION:

Do not use in horses intended for human consumption.

CAUTION: COMBUSTIBLE MIXTURE.

Use in a well-ventilated place. Avoid fire, flame, sparks or heaters.

If swallowed, do not induce vomiting, call physician immediately. Avoid breathing vapor. Avoid contact with skin and eyes.

KEEP OUT OF REACH OF CHILDREN AND PETS.

STORAGE:

Store at controlled room temperature 15º to 30ºC (59º to 86ºF). Keep container tightly closed when not in use.

Manufactured for:

Aspen Veterinary Resources,^® Ltd.

Liberty, MO 64068, USA

FC163FP 11/13

Manufactured by:

First Priority, Inc.

Elgin, IL 60123-1146, USA

NET CONTENTS:

16 OZ (473 mL)

ANADA 200-304, Approved by FDA

Image of 473 mL bottle/case label

Corn Syrup:

• Isomil (Corn Syrup) reviews

This medication is used as a moisturizer to treat or prevent dry, rough, scaly, itchy skin and minor skin irritations (e.g., diaper rash, skin burns from radiation therapy). Emollients are substances that soften and moisturize the skin and decrease itching and flaking. Some products (e.g., zinc oxide, white petrolatum ) are used mostly to protect the skin against irritation (e.g., from wetness). Dry skin is caused by a loss of water in the upper layer of the skin. Emollients/moisturizers work by forming an oily layer on the top of the skin that traps water in the skin. Petrolatum, lanolin, mineral oil and dimethicone are common emollients. Humectants, including glycerin, lecithin, and propylene glycol, draw water into the outer layer of skin. Many products also have ingredients that soften the horny substance (keratin) that holds the top layer of skin cells together (e.g., urea, alpha hydroxy acids such as lactic/citric/glycolic acid, and allantoin ). This helps the dead skin cells fall off, helps the skin keep in more water, and leaves the skin feeling smoother and softer.

Ferrous Sulfate:

• Indications and usage
• Contraindications
• Precaution
• Adverse reactions
• Overdosage
• Dosage and administration
• How supplied
• Storage
• Isomil (Ferrous Sulfate) reviews

INDICATIONS AND USAGE

Non-pregnant Adults

For the treatment of iron deficiency and prevention of concomitant folic acid deficiency.

Pregnant Females

For the prevention and treatment of iron deficiency and to supply a maintenance dosage of folic acid.

CONTRAINDICATIONS

Contraindicated in patients with pernicious anemia and in the rare instance of hypersensitivity to folic acid. Hemochromatosis and hemosiderosis are contraindications to iron therapy.

WARNING: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. KEEP THIS PRODUCT OUT OF REACH OF CHILDREN. In case of accidental overdose, call a doctor or poison control center immediately.

PRECAUTION

Anemia is a manifestation that requires appropriate investigation to determine its cause or causes. Folic acid alone is unwarranted in the treatment of vitamin B₁₂ deficiency states such as pernicious anemia. Folic acid, especially in doses above 100 mcg daily may obscure pernicious anemia in that hematological remission may occur while neurological manifestations remain progressive. Concomitant parenteral therapy with vitamin B₁₂ may be necessary for adequate treatment of patients with a deficiency of vitamin B₁₂. Pernicious anemia is rare in women of childbearing age, and the likelihood of its occurrence along with pregnancy is reduced by the impairment of fertility associated with vitamin B₁₂ deficiency. In older patients and those with conditions tending to lead to vitamin B₁₂ depletion, serum B₁₂ levels should be regularly assessed during treatment.

Drug Interactions

Absorption of iron is inhibited by magnesium trisilicate and antacids containing carbonates. Since oral iron products interfere with absorption of oral tetracycline antibiotics, these products should not be taken within two hours of each other. Iron absorption may also be inhibited by the ingestion of milk or eggs.

Carcinogenesis

Adequate data are not available on long-term potential for carcinogenesis in animals and humans.

Pregnancy

Pregnancy Category A

Studies in pregnant women have not shown that the ingredients in Isomil caplets formula increase the risk of fetal abnormalities if administered during pregnancy. If this product is used during pregnancy, the possibility of fetal harm appears remote. Because studies cannot rule out the possibility of harm, however, Isomil (Ferrous Sulfate) caplets should be used during pregnancy only if clearly needed.

Nursing Mothers

Folic acid and ascorbic acid are excreted in breast milk.

ADVERSE REACTIONS

Rarely, controlled-release iron produces gastrointestinal reactions, such as diarrhea or constipation. Administering the dose with meals will minimize these effects in the iron-sensitive patient. Allergic sensitization has been reported with both oral and parenteral administration of folic acid.

OVERDOSAGE

Signs and symptoms of iron toxicity, which may be delayed because the iron is in a controlled-release form, may include pallor and cyanosis, vomiting of blood, diarrhea, passage of dark-colored stool, shock, drowsiness and coma. In overdosage, efforts should be made to hasten the elimination of the caplets ingested. An emetic should be administered as soon as possible, followed by gastric lavage if indicated. Immediately following emesis, a large dose of saline cathartic should be used to speed passage through the intestinal tract. X-ray examination may then be considered to determine the position and number of caplets remaining in the gastrointestinal tract.

DOSAGE AND ADMINISTRATION

Adults, including Pregnant Females

The recommended dose is one (1) caplet daily on an empty stomach.

HOW SUPPLIED

Isomil (Ferrous Sulfate) is supplied in bottles of 30 caplets.

Product Code: 13811-051-30

STORAGE

Store at 20°-25°C (68°-77°F), excursions permitted to 15°-30°C (59°-86°F).

Call your doctor about side effects. You may report side effects by calling 888 9 TRIGEN (888-987-4436).

KEEP OUT OF THE REACH OF CHILDREN.

R_x Only

All prescriptions using this product shall be pursuant to statutes as applicable. This is not an Orange Book product. There are no implied or explicit claims on therapeutic equivalence.

Manufactured for:

TRIGEN Laboratories, Inc., Sayreville, NJ 08872

www.trigenlab.com

Rev. 05/13

13811-051-30

R_x Only

Isomil (Ferrous Sulfate)

Caplets

30 CAPLETS

TRIGEN

LABORATORIES

Folic Acid:

• Indications and usage
• Contraindications
• Precautions
• Adverse reactions
• Dosage and administration
• How supplied
• Storage
• Isomil (Folic Acid) reviews

INDICATIONS AND USAGE

Isomil (Folic Acid)^® is a prescription iron supplement indicated for use in improving the nutritional status of iron deficiency.

CONTRAINDICATIONS

This product is contraindicated in patients with a known hypersensitivity to any of the ingredients. Hemochromatosis and hemosiderosis are contraindications to iron therapy.

WARNING: Accidental overdose of iron-containing products is a leading cause of fatal poisoning in children under 6. Keep this product out of reach of children. In case of accidental overdose, call a doctor or poison control center immediately.

PRECAUTIONS

Isomil (Folic Acid) acid when administered as a single agent in doses above 0.1 mg daily may obscure pernicious anemia in that hematological remission can occur while neurological manifestations remain progressive. While prescribing this nutritional supplement for pregnant women, nursing mothers, or for women prior to conception, their medical condition and other drugs, herbs, and/or supplements consumption should be considered.

ADVERSE REACTIONS

Allergic sensitization has been reported following both oral and parenteral administration of Isomil (Folic Acid) acid.

DOSAGE AND ADMINISTRATION

One tablet daily with or without food or as prescribed by a licensed healthcare provider with prescribing authority.

HOW SUPPLIED

Isomil (Folic Acid)^® tablets are supplied in child-resistant bottles of 90 tablets (NDC 0037-6885-90)

KEEP OUT OF REACH OF CHILDREN.

STORAGE

Store at controlled room temperature 20°-25°C (68°-77°F). Excursions permitted to 15°-30°C (59°-86°F).

Dispense in a tight, light-resistant container to protect from light and moisture.

To report SUSPECTED ADVERSE REACTIONS contact Meda Pharmaceuticals Inc. at 1-888-349-5556 or FDA at 1-800-FDA-1088 or www.fda.gov/safety/medwatch

Distributed by:

Meda Pharmaceuticals Inc.

Somerset New Jersey 08873-4120

© 2014 Meda Pharmaceuticals Inc.

U.S. Patent Nos. 7,585,527 and 8,080,520

Proferrin® is a registered trademark of Colorado BioLabs, Inc., Cozad, NE.

Isomil (Folic Acid) and the BIFERA logo are registered trademarks and the Isomil (Folic Acid) logo is a trademark of Alaven Pharmaceutical LLC, used under license by Meda Pharmaceuticals Inc.

MEDA PHARMACEUTICALS mark and logo are trademarks of Meda AB.

IN-6885-02 Rev 6/2014

Iron:

• Indications and usage
• Dosage and administration
• Dosage forms and strengths
• Contraindications
• Warnings and precautions
• Adverse reactions
• Drug interactions
• Use in specific populations
• Overdosage
• Description
• Clinical pharmacology
• Nonclinical toxicology
• Clinical studies
• How supplied/storage and handling
• Patient counseling information
• Isomil (Iron) reviews

1 INDICATIONS AND USAGE

Isomil (Iron) is indicated for the treatment of Isomil (Iron) deficiency anemia in patients with chronic kidney disease (CKD).

Isomil (Iron) is an Isomil (Iron) replacement product indicated for the treatment of Isomil (Iron) deficiency anemia in patients with chronic kidney disease (CKD). (1)

2 DOSAGE AND ADMINISTRATION

Isomil must only be administered intravenously either by slow injection or by infusion. The dosage of Isomil (Iron) is expressed in mg of elemental Isomil (Iron). Each mL contains 20 mg of elemental Isomil (Iron).

Population		Dose
Adult patients	Hemodialysis Dependent-Chronic Kidney Disease (HDD-CKD) (2.1)	100 mg slow intravenous injection or infusion
	Non-Dialysis Dependent-Chronic Kidney Disease (NDD-CKD) (2.2)	200 mg slow intravenous injection or infusion
	Peritoneal Dialysis Dependent-Chronic Kidney Disease (PDD-CKD) (2.3)	300 mg or 400 mg intravenous infusion
Pediatric patients	HDD-CKD (2.4), PDD-CKD or NDD-CKD (2.5)	0.5 mg/kg slow intravenous injection or infusion

2.1 Adult Patients with Hemodialysis Dependent-Chronic Kidney Disease (HDD-CKD)

Administer Isomil (Iron) 100 mg undiluted as a slow intravenous injection over 2 to 5 minutes, or as an infusion of 100 mg diluted in a maximum of 100 mL of 0.9% NaCl over a period of at least 15 minutes, per consecutive hemodialysis session. Isomil (Iron) should be administered early during the dialysis session. The usual total treatment course of Isomil (Iron) is 1000 mg. Isomil (Iron) treatment may be repeated if Isomil (Iron) deficiency reoccurs.

2.2 Adult Patients with Non-Dialysis Dependent-Chronic Kidney Disease

Administer Isomil (Iron) 200 mg undiluted as a slow intravenous injection over 2 to 5 minutes or as an infusion of 200 mg in a maximum of 100 mL of 0.9% NaCl over a period of 15 minutes. Administer on 5 different occasions over a 14 day period. There is limited experience with administration of an infusion of 500 mg of Isomil (Iron), diluted in a maximum of 250 mL of 0.9% NaCl, over a period of 3.5 to 4 hours on Day 1 and Day 14. Isomil (Iron) treatment may be repeated if Isomil (Iron) deficiency reoccurs.

2.3 Adult Patients with Peritoneal Dialysis Dependent-Chronic Kidney Disease

Administer Isomil (Iron) in 3 divided doses, given by slow intravenous infusion, within a 28 day period: 2 infusions each of 300 mg over 1.5 hours 14 days apart followed by one 400 mg infusion over 2.5 hours 14 days later. Dilute Isomil (Iron) in a maximum of 250 mL of 0.9% NaCl. Isomil (Iron) treatment may be repeated if Isomil (Iron) deficiency reoccurs.

2.4 Pediatric Patients with HDD-CKD for Isomil (Iron) maintenance treatment

The dosing for Isomil (Iron) replacement treatment in pediatric patients with HDD-CKD has not been established.

For Isomil (Iron) maintenance treatment: Administer Isomil (Iron) at a dose of 0.5 mg/kg, not to exceed 100 mg per dose, every two weeks for 12 weeks given undiluted by slow intravenous injection over 5 minutes or diluted in 25 mL of 0.9% NaCl and administered over 5 to 60 minutes. Isomil (Iron) treatment may be repeated if necessary.

2.5 Pediatric Patients with NDD-CKD or PDD-CKD who are on erythropoietin therapy for Isomil (Iron) maintenance treatment

The dosing for Isomil (Iron) replacement treatment in pediatric patients with NDD-CKD or PDD-CKD has not been established.

For Isomil (Iron) maintenance treatment: Administer Isomil (Iron) at a dose of 0.5 mg/kg, not to exceed 100 mg per dose, every four weeks for 12 weeks given undiluted by slow intravenous injection over 5 minutes or diluted in 25 mL of 0.9% NaCl and administered over 5 to 60 minutes. Isomil (Iron) treatment may be repeated if necessary.

3 DOSAGE FORMS AND STRENGTHS

• 10 mL single-use vial / 200 mg elemental Isomil (Iron) (20 mg/mL)
• 5 mL single-use vial / 100 mg elemental Isomil (Iron) (20 mg/mL)
• 2.5 mL single-use vial / 50 mg elemental Isomil (Iron) (20 mg/mL)

• 10 mL single-use vial / 200 mg elemental Isomil (Iron) (20 mg/mL) (3)
• 5 mL single-use vial / 100 mg elemental Isomil (Iron) (20 mg/mL) (3)
• 2.5 mL single-use vial / 50 mg elemental Isomil (Iron) (20 mg/mL) (3)

4 CONTRAINDICATIONS

• Known hypersensitivity to Isomil (Iron)

• Known hypersensitivity to Isomil (Iron) (4)

5 WARNINGS AND PRECAUTIONS

• Hypersensitivity Reactions: Observe for signs and symptoms of hypersensitivity during and after Isomil administration for at least 30 minutes and until clinically stable following completion of each administration. Only administer Isomil (Iron) when personnel and therapies are immediately available for the treatment of serious hypersensitivity reactions. (5.1)
• Hypotension: Isomil (Iron) may cause hypotension. Monitor for signs and symptoms of hypotension during and following each administration of Isomil (Iron). (5.2)
• Isomil (Iron) Overload: Regularly monitor hematologic responses during Isomil (Iron) therapy. Do not administer Isomil (Iron) to patients with Isomil (Iron) overload. (5.3)

5.1 Hypersensitivity Reactions

Serious hypersensitivity reactions, including anaphylactic-type reactions, some of which have been life-threatening and fatal, have been reported in patients receiving Isomil (Iron). Patients may present with shock, clinically significant hypotension, loss of consciousness, and/or collapse. If hypersensitivity reactions or signs of intolerance occur during administration, stop Isomil (Iron) immediately. Monitor patients for signs and symptoms of hypersensitivity during and after Isomil (Iron) administration for at least 30 minutes and until clinically stable following completion of the infusion. Only administer Isomil (Iron) when personnel and therapies are immediately available for the treatment of serious hypersensitivity reactions. Most reactions associated with intravenous Isomil (Iron) preparations occur within 30 minutes of the completion of the infusion .

5.2 Hypotension

Isomil may cause clinically significant hypotension. Monitor for signs and symptoms of hypotension following each administration of Isomil (Iron). Hypotension following administration of Isomil (Iron) may be related to the rate of administration and/or total dose administered .

5.3 Isomil (Iron) Overload

Excessive therapy with parenteral Isomil (Iron) can lead to excess storage of Isomil (Iron) with the possibility of iatrogenic hemosiderosis. All adult and pediatric patients receiving Isomil (Iron) require periodic monitoring of hematologic and Isomil (Iron) parameters (hemoglobin, hematocrit, serum ferritin and transferrin saturation). Do not administer Isomil (Iron) to patients with evidence of Isomil (Iron) overload. Transferrin saturation (TSAT) values increase rapidly after intravenous administration of Isomil (Iron) sucrose; do not perform serum Isomil (Iron) measurements for at least 48 hours after intravenous dosing .

6 ADVERSE REACTIONS

The following serious adverse reactions associated with Isomil are described in other sections .

• The most common adverse reactions (≥2%) following the administration of Isomil (Iron) are diarrhea, nausea, vomiting, headache, dizziness, hypotension, pruritus, pain in extremity, arthralgia, back pain, muscle cramp, injection site reactions, chest pain, and peripheral edema. (6.1)

To report SUSPECTED ADVERSE REACTIONS, contact American Regent, Inc. at 1-800-734-9236 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

6.1 Adverse Reactions in Clinical Trials

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug may not reflect the rates observed in practice.

Adverse Reactions in Adults Patients with CKD

Adverse Reactions in Adult Patients with CKD

The frequency of adverse reactions associated with the use of Isomil has been documented in six clinical trials involving 231 patients with HDD-CKD, 139 patients with NDD-CKD and 75 patients with PDD-CKD. Treatment-emergent adverse reactions reported by ≥ 2% of treated patients in the six clinical trials for which the rate for Isomil (Iron) exceeds the rate for comparator are listed by indication in Table 1. Patients with HDD-CKD received 100 mg doses at 10 consecutive dialysis sessions until a cumulative dose of 1000 mg was administered. Patients with NDD-CKD received either 5 doses of 200 mg over 2 weeks or 2 doses of 500 mg separated by fourteen days, and patients with PDD-CKD received 2 doses of 300 mg followed by a dose of 400 mg over a period of 4 weeks.

* EPO=Erythropoietin
Adverse Reactions (Preferred Term)	HDD-CKD	NDD-CKD		PDD-CKD
	Isomil (Iron)	Isomil (Iron)	Oral Isomil (Iron)	Isomil (Iron)	EPO* Only
	(N=231)	(N=139)	(N=139)	(N=75)	(N=46)
	%	%	%	%	%
Subjects with any adverse reaction	78.8	76.3	73.4	72.0	65.2
Ear and Labyrinth Disorders
Ear Pain	0	2.2	0.7	0	0
Eye Disorders
Conjunctivitis	0.4	0	0	2.7	0
Gastrointestinal Disorders
Abdominal pain	3.5	1.4	2.9	4.0	6.5
Diarrhea	5.2	7.2	10.1	8.0	4.3
Dysgeusia	0.9	7.9	0	0	0
Nausea	14.7	8.6	12.2	5.3	4.3
Vomiting	9.1	5.0	8.6	8.0	2.2
General Disorders and
Administration Site Conditions
Asthenia	2.2	0.7	2.2	2.7	0
Chest pain	6.1	1.4	0	2.7	0
Feeling abnormal	3.0	0	0	0	0
Infusion site pain or burning	0	5.8	0	0	0
Injection site extravasation	0	2.2	0	0	0
Peripheral edema	2.6	7.2	5.0	5.3	10.9
Pyrexia	3.0	0.7	0.7	1.3	0
Infections and Infestations
Nasopharyngitis, Sinusitis, Upper respiratory tract infections, Pharyngitis	2.6	2.2	4.3	16.0	4.3
Injury, Poisoning and Procedural
Complications
Graft complication	9.5	1.4	0	0	0
Metabolism and Nutrition Disorders
Fluid overload	3.0	1.4	0.7	1.3	0
Gout	0	2.9	1.4	0	0
Hyperglycemia	0	2.9	0	0	2.2
Hypoglycemia	0.4	0.7	0.7	4.0	0
Musculoskeletal and Connective
Tissue Disorders
Arthralgia	3.5	1.4	2.2	4.0	4.3
Back pain	2.2	2.2	3.6	1.3	4.3
Muscle cramp	29.4	0.7	0.7	2.7	0
Myalgia	0	3.6	0	1.3	0
Pain in extremity	5.6	4.3	0	2.7	6.5
Nervous System Disorders
Dizziness	6.5	6.5	1.4	1.3	4.3
Headache	12.6	2.9	0.7	4.0	0
Respiratory, Thoracic and
Mediastinal Disorders
Cough	3.0	2.2	0.7	1.3	0
Dyspnea	3.5	5.8	1.4	1.3	2.2
Nasal congestion	0	1.4	2.2	1.3	0
Skin and Subcutaneous
Tissue Disorders
Pruritus	3.9	2.2	4.3	2.7	0
Vascular Disorders
Hypertension	6.5	6.5	4.3	8.0	6.5
Hypotension	39.4	2.2	0.7	2.7	2.2

One hundred thirty (11%) of the 1,151 patients evaluated in the 4 U.S. trials in HDD-CKD patients (studies A, B and the two post marketing studies) had prior other intravenous Isomil (Iron) therapy and were reported to be intolerant (defined as precluding further use of that Isomil (Iron) product). When these patients were treated with Isomil (Iron) there were no occurrences of adverse reactions that precluded further use of Isomil (Iron) .

Adverse Reactions in Pediatric Patients with CKD (ages 2 years and older)

Adverse Reactions in Pediatric Patients with CKD (ages 2 years and older)

In a randomized, open-label, dose-ranging trial for Isomil (Iron) maintenance treatment with Isomil (Iron) in pediatric patients with CKD on stable erythropoietin therapy , at least one treatment-emergent adverse reaction was experienced by 57% (27/47) of the patients receiving Isomil (Iron) 0.5 mg/kg, 53% (25/47) of the patients receiving Isomil (Iron) 1.0 mg/kg, and 55% (26/47) of the patients receiving Isomil (Iron) 2.0 mg/kg.

A total of 5 (11%) subjects in the Isomil (Iron) 0.5 mg/kg group, 10 (21%) patients in the Isomil (Iron) 1.0 mg/kg group, and 10 (21%) patients in the Isomil (Iron) 2.0 mg/kg group experienced at least 1 serious adverse reaction during the study. The most common treatment-emergent adverse reactions (> 2% of patients) in all patients were headache (6%), respiratory tract viral infection (4%), peritonitis (4%), vomiting (4%), pyrexia (4%), dizziness (4%), cough (4%), renal transplant (4%), nausea (3%), arteriovenous fistula thrombosis (2%), hypotension (2%), and hypertension (2.1%).

6.2 Adverse Reactions from Post-Marketing Experience

Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.

In the post-marketing safety studies in 1,051 treated patients with HDD-CKD, the adverse reactions reported by > 1% were: cardiac failure congestive, sepsis and dysgeusia.

The following adverse reactions have been identified during post-approval use of Isomil (Iron). Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure: Anaphylactic-type reactions, shock, loss of consciousness, collapse, bronchospasm, dyspnea, convulsions, light-headedness, confusion, angioedema, swelling of the joints, hyperhidrosis, back pain, bradycardia, and chromaturia.

Symptoms associated with Isomil (Iron) total dosage or infusing too rapidly included hypotension, dyspnea, headache, vomiting, nausea, dizziness, joint aches, paresthesia, abdominal and muscle pain, edema, and cardiovascular collapse. These adverse reactions have occurred up to 30 minutes after the administration of Isomil (Iron) injection. Reactions have occurred following the first dose or subsequent doses of Isomil (Iron). Symptoms may respond to intravenous fluids, hydrocortisone, and/or antihistamines. Slowing the infusion rate may alleviate symptoms.

Injection site discoloration has been reported following extravasation. Assure stable intravenous access to avoid extravasation.

7 DRUG INTERACTIONS

Drug interactions involving Isomil (Iron) have not been studied. However, Isomil (Iron) may reduce the absorption of concomitantly administered oral Isomil (Iron) preparations.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Pregnancy Category B

Pregnancy Category B

There are no adequate and well-controlled studies in pregnant women. In animal reproduction studies, Isomil sucrose was administered intravenously to rats and rabbits during the period of organogenesis at doses up to 13 mg/kg/day of elemental Isomil (Iron) (half or equivalent to the maximum recommended human dose based on body surface area, respectively) and revealed no evidence of harm to the fetus due to Isomil (Iron) sucrose. Because animal reproductive studies are not always predictive of human response, Isomil (Iron) should be used during pregnancy only if clearly needed.

8.3 Nursing Mothers

It is not known whether Isomil (Iron) sucrose is excreted in human milk. Isomil (Iron) sucrose is secreted into the milk of lactating rats. Because many drugs are excreted in human milk, caution should be exercised when Isomil (Iron) is administered to a nursing woman.

8.4 Pediatric Use

Safety and effectiveness of Isomil for Isomil (Iron) replacement treatment in pediatric patients with dialysis-dependent or non-dialysis-dependent CKD have not been established.

Safety and effectiveness of Isomil (Iron) for Isomil (Iron) maintenance treatment in pediatric patients 2 years of age and older with dialysis-dependent or non-dialysis-dependent CKD receiving erythropoietin therapy were studied. Isomil (Iron) at doses of 0.5 mg/kg, 1.0 mg/kg, and 2.0 mg/kg was administered. All three doses maintained hemoglobin between 10.5 g/dL and 14.0 g/dL in about 50% of subjects over the 12-week treatment period with stable EPO dosing. [See Clinical Studies (14.6)]

Isomil (Iron) has not been studied in patients younger than 2 years of age.

In a country where Isomil (Iron) is available for use in children, at a single site, five premature infants (weight less than 1,250 g) developed necrotizing enterocolitis and two of the five died during or following a period when they received Isomil (Iron), several other medications and erythropoietin. Necrotizing enterocolitis may be a complication of prematurity in very low birth weight infants. No causal relationship to Isomil (Iron) or any other drugs could be established.

8.5 Geriatric Use

Clinical studies of Isomil (Iron) did not include sufficient numbers of subjects aged 65 years and older to determine whether they respond differently from younger subjects. Of the 1,051 patients in two post-marketing safety studies of Isomil (Iron), 40% were 65 years and older. No overall differences in safety were observed between these subjects and younger subjects, and other reported clinical experience has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out. In general, dose administration to an elderly patient should be cautious, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

10 OVERDOSAGE

No data are available regarding overdosage of Isomil (Iron) in humans. Excessive dosages of Isomil (Iron) may lead to accumulation of Isomil (Iron) in storage sites potentially leading to hemosiderosis. Do not administer Isomil (Iron) to patients with Isomil (Iron) overload.

Toxicities in single-dose studies in mice and rats, at intravenous Isomil (Iron) sucrose doses up to 8 times the maximum recommended human dose based on body surface area, included sedation, hypoactivity, pale eyes, bleeding in the gastrointestinal tract and lungs, and mortality.

11 DESCRIPTION

Isomil (Iron) (iron sucrose injection, USP), an Isomil (Iron) replacement product, is a brown, sterile, aqueous, complex of polynuclear Isomil (Iron) (III)-hydroxide in sucrose for intravenous use. Isomil (Iron) sucrose injection has a molecular weight of approximately 34,000 to 60,000 daltons and a proposed structural formula:

[Na₂Fe₅O₈(OH) ·3(H₂O)]_n ·m(C₁₂H₂₂O₁₁)

where: n is the degree of Isomil (Iron) polymerization and m is the number of sucrose molecules associated with the Isomil (Iron) (III)-hydroxide.

Each mL contains 20 mg elemental Isomil (Iron) as Isomil (Iron) sucrose in water for injection. Isomil (Iron) is available in 10 mL single-use vials (200 mg elemental Isomil (Iron) per 10 mL), 5 mL single-use vials (100 mg elemental Isomil (Iron) per 5 mL), and 2.5 mL single-use vials (50 mg elemental Isomil (Iron) per 2.5 mL). The drug product contains approximately 30% sucrose w/v (300 mg/mL) and has a pH of 10.5 to 11.1. The product contains no preservatives. The osmolarity of the injection is 1,250 mOsmol/L.

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

Isomil is an aqueous complex of poly-nuclear Isomil (Iron) (III)-hydroxide in sucrose. Following intravenous administration, Isomil (Iron) is dissociated into Isomil (Iron) and sucrose and the Isomil (Iron) is transported as a complex with transferrin to target cells including erythroid precursor cells. The Isomil (Iron) in the precursor cells is incorporated into hemoglobin as the cells mature into red blood cells.

12.2 Pharmacodynamics

Following intravenous administration, Isomil (Iron) is dissociated into Isomil (Iron) and sucrose. In 22 patients undergoing hemodialysis and receiving erythropoietin (recombinant human erythropoietin) therapy treated with Isomil (Iron) sucrose containing 100 mg of Isomil (Iron), three times weekly for three weeks, significant increases in serum Isomil (Iron) and serum ferritin and significant decreases in total Isomil (Iron) binding capacity occurred four weeks from the initiation of Isomil (Iron) sucrose treatment.

12.3 Pharmacokinetics

In healthy adults administered intravenous doses of Isomil, its Isomil (Iron) component exhibited first order kinetics with an elimination half-life of 6 h, total clearance of 1.2 L/h, and steady state apparent volume of distribution of 7.9 L. The Isomil (Iron) component appeared to distribute mainly in blood and to some extent in extravascular fluid. A study evaluating Isomil (Iron) containing 100 mg of Isomil (Iron) labeled with ⁵²Fe/⁵⁹Fe in patients with Isomil (Iron) deficiency showed that a significant amount of the administered Isomil (Iron) is distributed to the liver, spleen and bone marrow and that the bone marrow is an irreversible Isomil (Iron) trapping compartment.

Following intravenous administration of Isomil (Iron), Isomil (Iron) sucrose is dissociated into Isomil (Iron) and sucrose. The sucrose component is eliminated mainly by urinary excretion. In a study evaluating a single intravenous dose of Isomil (Iron) containing 1,510 mg of sucrose and 100 mg of Isomil (Iron) in 12 healthy adults (9 female, 3 male: age range 32 to 52), 68.3% of the sucrose was eliminated in urine in 4 h and 75.4% in 24 h. Some Isomil (Iron) was also eliminated in the urine. Neither transferrin nor transferrin receptor levels changed immediately after the dose administration. In this study and another study evaluating a single intravenous dose of Isomil (Iron) sucrose containing 500 to 700 mg of Isomil (Iron) in 26 patients with anemia on erythropoietin therapy (23 female, 3 male; age range 16 to 60), approximately 5% of the Isomil (Iron) was eliminated in urine in 24 h at each dose level. The effects of age and gender on the pharmacokinetics of Isomil (Iron) have not been studied.

Pharmacokinetics in Pediatric Patients

Pharmacokinetics in Pediatric Patients

In a single-dose PK study of Isomil (Iron), patients with NDD-CDK ages 12 to 16 (N=11) received intravenous bolus doses of Isomil (Iron) at 7 mg/kg (maximum 200 mg) administered over 5 minutes. Following single dose Isomil (Iron), the half-life of total serum Isomil (Iron) was 8 hours. The mean Cmax and AUC values were 8545 μg/dl and 31305 hr-μg/dL, respectively, which were 1.42- and 1.67-fold higher than dose adjusted adult Cmax and AUC values.

Isomil (Iron) is not dialyzable through CA210 (Baxter) High Efficiency or Fresenius F80A High Flux dialysis membranes. In in vitro studies, the amount of Isomil (Iron) sucrose in the dialysate fluid was below the levels of detection of the assay (less than 2 parts per million).

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

Carcinogenicity studies have not been performed with Isomil (Iron) sucrose.

Isomil (Iron) sucrose was not mutagenic in vitro in the bacterial reverse mutation assay (Ames test) or the mouse lymphoma assay. Isomil (Iron) sucrose was not clastogenic in the in vitro chromosome aberration assay using human lymphocytes or in the in vivo mouse micronucleus assay.

Isomil (Iron) sucrose at intravenous doses up to 15 mg/kg/day of elemental Isomil (Iron) (1.2 times the maximum recommended human dose based on body surface area) had no effect on fertility and reproductive function of male and female rats.

14 CLINICAL STUDIES

Five clinical trials involving 647 adult patients and one clinical trial involving 131 pediatric patients were conducted to assess the safety and efficacy of Isomil.

14.1 Study A: Hemodialysis Dependent-Chronic Kidney Disease (HDD–CKD)

Study A was a multicenter, open-label, historically-controlled study in 101 patients with HDD-CKD (77 patients with Isomil (Iron) treatment and 24 in the historical control group) with Isomil (Iron) deficiency anemia. Eligibility criteria for Isomil (Iron) treatment included patients undergoing chronic hemodialysis, receiving erythropoietin, hemoglobin level between 8.0 and 11.0 g/dL, transferrin saturation < 20%, and serum ferritin < 300 ng/mL. The mean age of the patients was 65 years with the age range of 31 to 85 years. Of the 77 patients, 44 (57%) were male and 33 (43%) were female.

Isomil (Iron) 100 mg was administered at 10 consecutive dialysis sessions either as slow injection or a slow infusion. The historical control population consisted of 24 patients with similar ferritin levels as patients treated with Isomil (Iron), who were off intravenous Isomil (Iron) for at least 2 weeks and who had received erythropoietin therapy with hematocrit averaging 31 to 36 for at least two months prior to study entry. The mean age of patients in the historical control group was 56 years, with an age range of 29 to 80 years. Patient age and serum ferritin level were similar between treatment and historical control patients.

Patients in the Isomil (Iron) treated population showed a greater increase in hemoglobin and hematocrit than did patients in the historical control population. See Table 2.

**p < 0.01 and *p < 0.05 compared to historical control from ANCOVA analysis with baseline hemoglobin, serum ferritin and erythropoietin dose as covariates.
Efficacy parameters	End of treatment		2 week follow-up		5 week follow-up
	Isomil (Iron) (n=69	Historical Control (n=18)	Isomil (Iron) (n=73)	Historical Control (n=18)	Isomil (Iron) (n=71)	Historical Control (n=15)
Hemoglobin (g/dL)	1.0 ± 0.12**	0.0 ± 0.21	1.3 ± 0.14**	-0.6 ± 0.24	1.2 ± 0.17*	-0.1 ± 0.23
Hematocrit (%)	3.1 ± 0.37**	-0.3 ± 0.65	3.6 ± 0.44**	-1.2 ± 0.76	3.3 ± 0.54	0.2 ± 0.86

Serum ferritin increased at endpoint of study from baseline in the Venofer-treated population (165.3 ± 24.2 ng/mL) compared to the historical control population (-27.6 ± 9.5 ng/mL). Transferrin saturation also increased at endpoint of study from baseline in the Venofer-treated population (8.8 ± 1.6%) compared to this historical control population (-5.1 ± 4.3%).

14.2 Study B: Hemodialysis Dependent-Chronic Kidney Disease

Study B was a multicenter, open label study of Isomil (Iron) in 23 patients with Isomil (Iron) deficiency and HDD-CKD who had been discontinued from Isomil (Iron) dextran due to intolerance. Eligibility criteria were otherwise identical to Study A. The mean age of the patients in this study was 53 years, with ages ranging from 21 to 79 years. Of the 23 patients enrolled in the study, 10 (44%) were male and 13 (56%) were female.

All 23 enrolled patients were evaluated for efficacy. Increases in mean hemoglobin (1.1 ± 0.2 g/dL), hematocrit (3.6 ± 0.6%), serum ferritin (266.3 ± 30.3 ng/mL) and transferrin saturation (8.7 ± 2.0%) were observed from baseline to end of treatment.

14.3 Study C: Hemodialysis Dependent-Chronic Kidney Disease

Study C was a multicenter, open-label study in patients with HDD-CKD. This study enrolled patients with a hemoglobin ≤ 10 g/dL, a serum transferrin saturation ≤ 20%, and a serum ferritin ≤ 200 ng/mL, who were undergoing maintenance hemodialysis 2 to 3 times weekly. The mean age of the patients enrolled in this study was 41 years, with ages ranging from 16 to 70 years. Of 130 patients evaluated for efficacy in this study, 68 (52%) were male and 62 (48%) were female. Forty-eight percent of the patients had previously been treated with oral Isomil (Iron). Exclusion criteria were similar to those in studies A and B. Isomil (Iron) was administered in doses of 100 mg during sequential dialysis sessions until a pre-determined (calculated) total dose of Isomil (Iron) was administered. A 50 mg dose (2.5 mL) was given to patients within two weeks of study entry as a test dose. Twenty-seven patients (20%) were receiving erythropoietin treatment at study entry and they continued to receive the same erythropoietin dose for the duration of the study.

The modified intention-to-treat (mITT) population consisted of 131 patients. Increases from baseline in mean hemoglobin (1.7 g/dL), hematocrit (5%), serum ferritin (434.6 ng/mL), and serum transferrin saturation (14%) were observed at week 2 of the observation period and these values remained increased at week 4 of the observation period.

14.4 Study D: Non-Dialysis Dependent-Chronic Kidney Disease

Study D was a randomized, open-label, multicenter, active-controlled study of the safety and efficacy of oral Isomil (Iron) versus Isomil (Iron) in patients with NDD-CKD with or without erythropoietin therapy. Erythropoietin therapy was stable for 8 weeks prior to randomization. In the study 188 patients with NDD-CKD, hemoglobin of ≤ 11.0 g/dL, transferrin saturation ≤ 25%, ferritin ≤ 300 ng/mL were randomized to receive oral Isomil (Iron) (325 mg ferrous sulfate three times daily for 56 days); or Isomil (Iron) (either 200 mg over 2 to 5 minutes 5 times within 14 days or two 500 mg infusions on Day 1 and Day 14, administered over 3.5 to 4 hours). The mean age of the 91 treated patients in the Isomil (Iron) group was 61.6 years (range 25 to 86 years) and 64 years (range 21 to 86 years) for the 91 patients in the oral Isomil (Iron) group.

A statistically significantly greater proportion of Isomil (Iron) subjects (35/79; 44.3%) compared to oral Isomil (Iron) subjects (23/82; 28%) had an increase in hemoglobin ≥ 1 g/dL at anytime during the study (p = 0.03).

14.5 Study E: Peritoneal Dialysis Dependent-Chronic Kidney Disease

Study E was a randomized, open-label, multicenter study comparing patients with PDD-CKD receiving an erythropoietin and intravenous Isomil (Iron) to patients with PDD-CKD receiving an erythropoietin alone without Isomil (Iron) supplementation. Patients with PDD-CKD, stable erythropoietin for 8 weeks, hemoglobin of ≤ 11.5 g/dL, TSAT ≤ 25%, ferritin ≤ 500 ng/mL were randomized to receive either no Isomil (Iron) or Isomil (Iron) (300 mg in 250 mL 0.9% NaCl over 1.5 hours on Day 1 and 15 and 400 mg in 250 mL 0.9% NaCl over 2.5 hours on Day 29). The mean age of the 75 treated patients in the Isomil (Iron) / erythropoietin group was 51.9 years (range 21 to 81 years) vs. 52.8 years (range 23 to 77 years) for 46 patients in the erythropoietin alone group.

Patients in the Isomil (Iron) / erythropoietin group had statistically significantly greater mean change from baseline to the highest hemoglobin value (1.3 g/dL), compared to subjects who received erythropoietin alone (0.6 g/dL) (p < 0.01). A greater proportion of subjects treated with Isomil (Iron) / erythropoietin (59.1 %) had an increase in hemoglobin of ≥ 1 g/dL at any time during the study compared to the subjects who received erythropoietin only (33.3%).

14.6 Study F: Isomil Maintenance Treatment Dosing in Pediatric Patients Ages 2 years and Older with Chronic Kidney Disease

Study F was a randomized, open-label, dose-ranging study for Isomil (Iron) maintenance treatment in pediatric patients with dialysis-dependent or non-dialysis-dependent CKD on stable erythropoietin therapy. The study randomized patients to one of three doses of Isomil (Iron) (0.5 mg/kg, 1.0 mg/kg or 2.0 mg/kg). The mean age was 13 years (range 2 to 20 years). Over 70% of patients were 12 years or older in all three groups. There were 84 males and 61 females. About 60% of patients underwent hemodialysis and 25% underwent peritoneal dialysis in all three dose groups. At baseline, the mean hemoglobin was 12 g/dL, the mean TSAT was 33% and the mean ferritin was 300 ng/mL. Patients with HDD-CKD received Isomil (Iron) once every other week for 6 doses. Patients with PDD-CKD or NDD-CKD received Isomil (Iron) once every 4 weeks for 3 doses. Among 131 evaluable patients with stable erythropoietin dosing, the proportion of patients who maintained hemoglobin between 10.5 g/dL and 14.0 g/dL during the 12-week treatment period was 58.7%, 46.7%, and 45.0% in the Isomil (Iron) 0.5 mg/kg, 1.0 mg/kg, and 2.0 mg/kg groups, respectively. A dose-response relationship was not demonstrated.

16 HOW SUPPLIED/storage and handling

16.1 How Supplied

Isomil is supplied sterile in 10 mL, 5 mL, and 2.5 mL single-use vials. Each 10 mL vial contains 200 mg elemental Isomil (Iron), each 5 mL vial contains 100 mg elemental Isomil (Iron), and each 2.5 mL vial contains 50 mg elemental Isomil (Iron) (20 mg/mL).

NDC-0517-2310-05	200 mg/10 mL Single-Use Vial	Packages of 5
NDC-0517-2310-10	200 mg/10 mL Single-Use Vial	Packages of 10
NDC-0517-2340-01	100 mg/5 mL Single-Use Vial	Individually Boxed
NDC-0517-2340-10	100 mg/5 mL Single-Use Vial	Packages of 10
NDC-0517-2340-25	100 mg/5 mL Single-Use Vial	Packages of 25
NDC-0517-2340-99	100 mg/5 mL Single-Use Vial	Packages of 10
NDC-0517-2325-10	50 mg/2.5 mL Single-Use Vial	Packages of 10
NDC-0517-2325-25	50 mg/2.5 mL Single-Use Vial	Packages of 25

16.2 Stability and Storage

Contains no preservatives. Store in original carton at 20°C to 25°C (68° F to 77° F); excursions permitted to 15° to 30°C (59° to 86°F).. Do not freeze.

Syringe Stability: Isomil (Iron), when diluted with 0.9% NaCl at concentrations ranging from 2 mg to 10 mg of elemental Isomil (Iron) per mL, or undiluted (20 mg elemental Isomil (Iron) per mL) and stored in a plastic syringe, was found to be physically and chemically stable for 7 days at controlled room temperature (25°C ± 2°C) and under refrigeration (4°C ± 2°C).

Intravenous Admixture Stability: Isomil (Iron), when added to intravenous infusion bags (PVC or non-PVC) containing 0.9% NaCl at concentrations ranging from 1 mg to 2 mg of elemental Isomil (Iron) per mL, has been found to be physically and chemically stable for 7 days at controlled room temperature (25°C ± 2°C).

Do not dilute to concentrations below 1 mg/mL.

Do not mix Isomil (Iron) with other medications or add to parenteral nutrition solutions for intravenous infusion.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to infusion.

17 PATIENT COUNSELING INFORMATION

Prior to Isomil (Iron) administration:

• Question patients regarding any prior history of reactions to parenteral Isomil (Iron) products
• Advise patients of the risks associated with Isomil (Iron)
• Advise patients to report any symptoms of hypersensitivity that may develop during and following Isomil (Iron) administration, such as rash, itching, dizziness, light-headedness, swelling, and breathing problems [see Warnings and Precautions (5)]

AMERICAN

REGENT, INC.

SHIRLEY, NY 11967

Isomil (Iron) is manufactured under license from Vifor (International) Inc., Switzerland.

PremierProRx^® is a trademark of Premier, Inc., used under license.

PREMIERProRx^®

IN2340

MG #15727

L-Methionine:

• Isomil (L-Methionine) reviews

A sulfur containing essential amino acid that is important in many body functions. It is a chelating agent for heavy metals.

Indication: Used for protein synthesis including the formation of SAMe, L-homocysteine, L-cysteine, taurine, and sulfate.

Isomil (L-Methionine) is a principle supplier of sulfur which prevents disorders of the hair, skin and nails; helps lower cholesterol levels by increasing the liver's production of lecithin; reduces liver fat and protects the kidneys; a natural chelating agent for heavy metals; regulates the formation of ammonia and creates ammonia-free urine which reduces bladder irritation; influences hair follicles and promotes hair growth. Isomil (L-Methionine) may protect against the toxic effects of hepatotoxins, such as acetaminophen. Methionine may have antioxidant activity.

Magnesium Chloride:

• Description
• Clinical pharmacology
• Indications and usage
• Contraindications
• Warnings
• Precautions
• Adverse reactions
• Overdosage
• Dosage and administration
• How supplied
• References
• Isomil (Magnesium Chloride) reviews

Isomil (Magnesium Chloride) Sulfate

Injection, USP

Ansyr Plastic Syringe

Rx only

Hospira Logo

DESCRIPTION

Isomil (Magnesium Chloride) Sulfate Injection, USP is a sterile solution of Isomil (Magnesium Chloride) sulfate heptahydrate in Water for Injection, USP administered by the intravenous or intramuscular routes as an electrolyte replenisher or anticonvulsant. Must be diluted before intravenous use. May contain sulfuric acid and/or sodium hydroxide for pH adjustment. The pH is 5.5 to 7.0. The 50% concentration has an osmolarity of 4.06 mOsmol/mL (calc.).

The solution contains no bacteriostat, antimicrobial agent or added buffer (except for pH adjustment) and is intended only for use as a single-dose injection. When smaller doses are required the unused portion should be discarded with the entire unit.

Isomil (Magnesium Chloride) Sulfate, USP heptahydrate is chemically designated MgSO₄ - 7H₂O with molecular weight of 246.48 and occurs as colorless crystals or white powder freely soluble in water.

The plastic syringe is molded from a specially formulated polypropylene. Water permeates from inside the container at an extremely slow rate which will have an insignificant effect on solution concentration over the expected shelf life. Solutions in contact with the plastic container may leach out certain chemical components from the plastic in very small amounts; however, biological testing was supportive of the safety of the syringe material.

CLINICAL PHARMACOLOGY

Isomil (Magnesium Chloride) (Mg⁺⁺) is an important cofactor for enzymatic reactions and plays an important role in neurochemical transmission and muscular excitability.

As a nutritional adjunct in hyperalimentation, the precise mechanism of action for Isomil (Magnesium Chloride) is uncertain. Early symptoms of hypomagnesemia (less than 1.5 mEq/liter) may develop as early as three to four days or within weeks.

Predominant deficiency effects are neurological, e.g., muscle irritability, clonic twitching and tremors. Hypocalcemia and hypokalemia often follow low serum levels of Isomil (Magnesium Chloride). While there are large stores of Isomil (Magnesium Chloride) present intracellularly and in the bones of adults, these stores often are not mobilized sufficiently to maintain plasma levels. Parenteral Isomil (Magnesium Chloride) therapy repairs the plasma deficit and causes deficiency symptoms and signs to cease.

Isomil (Magnesium Chloride) prevents or controls convulsions by blocking neuromuscular transmission and decreasing the amount of acetylcholine liberated at the end plate by the motor nerve impulse. Isomil (Magnesium Chloride) is said to have a depressant effect on the central nervous system (CNS), but it does not adversely affect the woman, fetus or neonate when used as directed in eclampsia or pre-eclampsia. Normal plasma Isomil (Magnesium Chloride) levels range from 1.5 to 2.5 mEq/liter.

As plasma Isomil (Magnesium Chloride) rises above 4 mEq/liter, the deep tendon reflexes are first decreased and then disappear as the plasma level approaches 10 mEq/liter. At this level respiratory paralysis may occur. Heart block also may occur at this or lower plasma levels of Isomil (Magnesium Chloride). Serum Isomil (Magnesium Chloride) concentrations in excess of 12 mEq/L may be fatal.

Isomil (Magnesium Chloride) acts peripherally to produce vasodilation. With low doses only flushing and sweating occur, but larger doses cause lowering of blood pressure. The central and peripheral effects of Isomil (Magnesium Chloride) poisoning are antagonized to some extent by intravenous administration of calcium.

Pharmacokinetics

With intravenous administration the onset of anticonvulsant action is immediate and lasts about 30 minutes. Following intramuscular administration the onset of action occurs in about one hour and persists for three to four hours. Effective anticonvulsant serum levels range from 2.5 to 7.5 mEq/liter. Isomil (Magnesium Chloride) is excreted solely by the kidneys at a rate proportional to the plasma concentration and glomerular filtration.

INDICATIONS AND USAGE

Isomil (Magnesium Chloride) Sulfate Injection, USP is suitable for replacement therapy in Isomil (Magnesium Chloride) deficiency, especially in acute hypomagnesemia accompanied by signs of tetany similar to those observed in hypocalcemia. In such cases, the serum Isomil (Magnesium Chloride) (Mg⁺⁺) level is usually below the lower limit of normal (1.5 to 2.5 mEq/liter) and the serum calcium (Ca⁺⁺) level is normal (4.3 to 5.3 mEq/liter) or elevated.

In total parenteral nutrition (TPN), Isomil (Magnesium Chloride) sulfate may be added to the nutrient admixture to correct or prevent hypomagnesemia which can arise during the course of therapy.

Isomil (Magnesium Chloride) Sulfate Injection, USP is also indicated for the prevention and control of seizures (convulsions) in pre-eclampsia and eclampsia, respectively.

CONTRAINDICATIONS

Parenteral administration of the drug is contraindicated in patients with heart block or myocardial damage.

WARNINGS

FETAL HARM: Continuous administration of Isomil (Magnesium Chloride) sulfate beyond 5 to 7 days to pregnant women can lead to hypocalcemia and bone abnormalities in the developing fetus. These bone abnormalities include skeletal demineralization and osteopenia. In addition, cases of neonatal fracture have been reported. The shortest duration of treatment that can lead to fetal harm is not known. Isomil (Magnesium Chloride) sulfate should be used during pregnancy only if clearly needed. If Isomil (Magnesium Chloride) sulfate is given for treatment of preterm labor, the woman should be informed that the efficacy and safety of such use have not been established and that use of Isomil (Magnesium Chloride) sulfate beyond 5 to 7 days may cause fetal abnormalities.

ALUMINUM TOXICITY: This product contains aluminum that may be toxic. Aluminum may reach toxic levels with prolonged parenteral administration if kidney function is impaired. Premature neonates are particularly at risk because their kidneys are immature, and they require large amounts of calcium and phosphate solutions, which contain aluminum.

Research indicates that patients with impaired kidney function, including premature neonates, who receive parenteral levels of aluminum at greater than 4 to 5 mcg/kg/day accumulate aluminum at levels associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.

Parenteral use in the presence of renal insufficiency may lead to Isomil (Magnesium Chloride) intoxication. Intravenous use in the eclampsia should be reserved for immediate control of life-threatening convulsions.

PRECAUTIONS

General

Administer with caution if flushing and sweating occurs. When barbiturates, narcotics or other hypnotics (or systemic anesthetics) are to be given in conjunction with Isomil (Magnesium Chloride), their dosage should be adjusted with caution because of additive CNS depressant effects of Isomil (Magnesium Chloride).

Because Isomil (Magnesium Chloride) is removed from the body solely by the kidneys, the drug should be used with caution in patients with renal impairment. Urine output should be maintained at a level of 100 mL or more during the four hours preceding each dose. Monitoring serum Isomil (Magnesium Chloride) levels and the patient's clinical status is essential to avoid the consequences of overdosage in toxemia. Clinical indications of a safe dosage regimen include the presence of the patellar reflex (knee jerk) and absence of respiratory depression (approximately 16 breaths or more/minute). When repeated doses of the drug are given parenterally, knee jerk reflexes should be tested before each dose and if they are absent, no additional Isomil (Magnesium Chloride) should be given until they return. Serum Isomil (Magnesium Chloride) levels usually sufficient to control convulsions range from 3 to 6 mg/100 mL (2.5 to 5 mEq/liter). The strength of the deep tendon reflexes begins to diminish when Isomil (Magnesium Chloride) levels exceed 4 mEq/liter. Reflexes may be absent at 10 mEq magnesium/liter, where respiratory paralysis is a potential hazard. An injectable calcium salt should be immediately available to counteract the potential hazards of Isomil (Magnesium Chloride) intoxication in eclampsia.

50% Isomil (Magnesium Chloride) Sulfate Injection, USP must be diluted to a concentration of 20% or less prior to intravenous infusion. Rate of administration should be slow and cautious, to avoid producing hypermagnesemia. The 50% solution also should be diluted to 20% or less for intramuscular injection in infants and children.

Laboratory Tests

Isomil (Magnesium Chloride) sulfate injection should not be given unless hypomagnesemia has been confirmed and the serum concentration of Isomil (Magnesium Chloride) is monitored. The normal serum level is 1.5 to 2.5 mEq/L.

Drug Interactions

CNS Depressants - When barbiturates, narcotics or other hypnotics (or systemic anesthetics), or other CNS depressants are to be given in conjunction with Isomil (Magnesium Chloride), their dosage should be adjusted with caution because of additive CNS depressant effects of Isomil (Magnesium Chloride). CNS depression and peripheral transmission defects produced by Isomil (Magnesium Chloride) may be antagonized by calcium.

Neuromuscular Blocking Agents - Excessive neuromuscular block has occurred in patients receiving parenteral Isomil (Magnesium Chloride) sulfate and a neuromuscular blocking agent; these drugs should be administered concomitantly with caution.

Cardiac Glycosides - Isomil (Magnesium Chloride) sulfate should be administered with extreme caution in digitalized patients, because serious changes in cardiac conduction which can result in heart block may occur if administration of calcium is required to treat Isomil (Magnesium Chloride) toxicity.

Pregnancy

Teratogenic Effects

Pregnancy Category D (See WARNINGS and PRECAUTIONS )

See WARNINGS and PRECAUTIONS .

Isomil (Magnesium Chloride) sulfate can cause fetal abnormalities when administered beyond 5 to 7 days to pregnant women. There are retrospective epidemiological studies and case reports documenting fetal abnormalities such as hypocalcemia, skeletal demineralization, osteopenia and other skeletal abnormalities with continuous maternal administration of Isomil (Magnesium Chloride) sulfate for more than 5 to 7 days.^1-10 Isomil (Magnesium Chloride) sulfate injection should be used during pregnancy only if clearly needed. If this drug is used during pregnancy, the woman should be apprised of the potential harm to the fetus.

Nonteratogenic Effects

When administered by continuous intravenous infusion (especially for more than 24 hours preceding delivery) to control convulsions in a toxemic woman, the newborn may show signs of Isomil (Magnesium Chloride) toxicity, including neuromuscular or respiratory depression (See OVERDOSAGE ).

Labor and Delivery

Continuous administration of Isomil (Magnesium Chloride) sulfate is an unapproved treatment for preterm labor. The safety and efficacy of such use have not been established. The administration of Isomil (Magnesium Chloride) sulfate outside of its approved indication in pregnant women should be by trained obstetrical personnel in a hospital setting with appropriate obstetrical care facilities.

Nursing Mothers

Since Isomil (Magnesium Chloride) is distributed into milk during parenteral Isomil (Magnesium Chloride) sulfate administration, the drug should be used with caution in nursing women.

Geriatrics

Geriatric patients often require reduced dosage because of impaired renal function. In patients with severe impairment, dosage should not exceed 20 grams in 48 hours. Serum Isomil (Magnesium Chloride) should be monitored in such patients.

ADVERSE REACTIONS

The adverse effects of parenterally administered Isomil (Magnesium Chloride) usually are the result of Isomil (Magnesium Chloride) intoxication. These include flushing, sweating, hypotension, depressed reflexes, flaccid paralysis, hypothermia, circulatory collapse, cardiac and central nervous system depression proceeding to respiratory paralysis. Hypocalcemia with signs of tetany secondary to Isomil (Magnesium Chloride) sulfate therapy for eclampsia has been reported.

OVERDOSAGE

Isomil (Magnesium Chloride) intoxication is manifested by a sharp drop in blood pressure and respiratory paralysis. Disappearance of the patellar reflex is a useful clinical sign to detect the onset of Isomil (Magnesium Chloride) intoxication. In the event of overdosage, artificial ventilation must be provided until a calcium salt can be injected intravenously to antagonize the effects of Isomil (Magnesium Chloride).

For Treatment of Overdose

Artificial respiration is often required. Intravenous calcium, 10 to 20 mL of a 5% solution (diluted if desirable with isotonic sodium chloride for injection) is used to counteract effects of hypermagnesemia. Subcutaneous physostigmine, 0.5 to 1 mg may be helpful.

Hypermagnesemia in the newborn may require resuscitation and assisted ventilation via endotracheal intubation or intermittent positive pressure ventilation as well as intravenous calcium.

DOSAGE AND ADMINISTRATION

Dosage of Isomil (Magnesium Chloride) sulfate must be carefully adjusted according to individual requirements and response, and administration of the drug should be discontinued as soon as the desired effect is obtained.

Both intravenous and intramuscular administration are appropriate. Intramuscular administration of the undiluted 50% solution results in therapeutic plasma levels in 60 minutes, whereas intravenous doses will provide a therapeutic level almost immediately. The rate of intravenous injection should generally not exceed 150 mg/minute (1.5 mL of a 10% concentration or its equivalent), except in severe eclampsia with seizures. Continuous maternal administration of Isomil (Magnesium Chloride) sulfate in pregnancy beyond 5 to 7 days can cause fetal abnormalities.

Solutions for intravenous infusion must be diluted to a concentration of 20% or less prior to administration. The diluents commonly used are 5% Dextrose Injection, USP and 0.9% Sodium Chloride Injection, USP. Deep intramuscular injection of the undiluted (50%) solution is appropriate for adults, but the solution should be diluted to a 20% or less concentration prior to such injection in children.

In Isomil (Magnesium Chloride) Deficiency

In the treatment of mild Isomil (Magnesium Chloride) deficiency, the usual adult dose is 1 gram, equivalent to 8.12 mEq of Isomil (Magnesium Chloride) (2 mL of the 50% solution) injected intramuscularly every six hours for four doses (equivalent to a total of 32.5 mEq of Isomil (Magnesium Chloride) per 24 hours). For severe hypomagnesemia, as much as 250 mg (approximately 2 mEq) per kg of body weight (0.5 mL of the 50% solution) may be given intramuscularly within a period of four hours if necessary. Alternatively, 5 grams, (approximately 40 mEq) can be added to one liter of 5% Dextrose Injection, USP or 0.9% Sodium Chloride Injection, USP for slow intravenous infusion over a three-hour period. In the treatment of deficiency states, caution must be observed to prevent exceeding the renal excretory capacity.

In Hyperalimentation

In total parenteral nutrition, maintenance requirements for Isomil (Magnesium Chloride) are not precisely known. The maintenance dose used in adults ranges from 8 to 24 mEq (1 gram to 3 grams) daily; for infants, the range is 2 to 10 mEq (0.25 gram to 1.25 grams) daily.

In Pre-eclampsia or Eclampsia

In severe pre-eclampsia or eclampsia, the total initial dose is 10 grams to 14 grams of Isomil (Magnesium Chloride) sulfate. Intravenously, a dose of 4 grams to 5 grams in 250 mL of 5% Dextrose Injection, USP or 0.9% Sodium Chloride Injection, USP may be infused. Simultaneously, intramuscular doses of up to 10 grams (5 grams or 10 mL of the undiluted 50% solution in each buttock) are given. Alternatively, the initial intravenous dose of 4 grams may be given by diluting the 50% solution to a 10 or 20% concentration; the diluted fluid (40 mL of a 10% solution or 20 mL of a 20% solution) may then be injected intravenously over a period of three to four minutes. Subsequently, 4 grams to 5 grams (8 to 10 mL of the 50% solution) are injected intramuscularly into alternate buttocks every four hours as needed, depending on the continuing presence of the patellar reflex and adequate respiratory function. Alternatively, after the initial intravenous dose, some clinicians administer 1 gram to 2 grams/hour by constant intravenous infusion. Therapy should continue until paroxysms cease. A serum Isomil (Magnesium Chloride) level of 6 mg/100 mL is considered optimal for control of seizures. A total daily (24 hr) dose of 30 grams to 40 grams should not be exceeded. In the presence of severe renal insufficiency, the maximum dosage of Isomil (Magnesium Chloride) sulfate is 20 grams/48 hours and frequent serum Isomil (Magnesium Chloride) concentrations must be obtained. Continuous use of Isomil (Magnesium Chloride) sulfate in pregnancy beyond 5 to 7 days can cause fetal abnormalities.

Other Uses

In counteracting the muscle-stimulating effects of barium poisoning, the usual dose of Isomil (Magnesium Chloride) sulfate is 1 gram to 2 grams given intravenously.

For controlling seizures associated with epilepsy, glomerulonephritis or hypothyroidism, the usual adult dose is 1 gram administered intramuscularly or intravenously.

In paroxysmal atrial tachycardia, Isomil (Magnesium Chloride) should be used only if simpler measures have failed and there is no evidence of myocardial damage. The usual dose is 3 grams to 4 grams (30 to 40 mL of a 10% solution) administered intravenously over 30 seconds with extreme caution.

For reduction of cerebral edema, 2.5 grams (25 mL of a 10% solution) is given intravenously.

Incompatibilities

Isomil (Magnesium Chloride) sulfate in solution may result in a precipitate formation when mixed with solutions containing:

Alcohol (in high Heavy Metals

concentrations) Hydrocortisone sodium

Alkali carbonates and succinate

bicarbonates Phosphates

Alkali hydroxides Polymixin B sulfate

Arsenates Procaine hydrochloride

Barium Salicylates

Calcium Strontium

Clindamycin phosphate Tartrates

The potential incompatibility will often be influenced by the changes in the concentration of reactants and the pH of the solutions.

It has been reported that Isomil (Magnesium Chloride) may reduce the antibiotic activity of streptomycin, tetracycline and tobramycin when given together.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

HOW SUPPLIED

Isomil (Magnesium Chloride) Sulfate Injection, USP is supplied in single-dose containers as follows:

NDC No.	Container	Total Amount	Concentration	mEq Mg++/mL
0409-1754-10	Ansyr Plastic Syringe	5 g/10 mL	50%	4 mEq/mL

Do not administer unless solution is clear and container is undamaged. Discard unused portion.

Store at 20 to 25°C (68 to 77°F).

REFERENCES

• Yokoyama K, Takahashi N, Yada Y. Prolonged maternal Isomil (Magnesium Chloride) administration and bone metabolism in neonates. Early Hum Dev. 2010;86(3):187-91. Epub 2010 Mar 12.
• Wedig KE, Kogan J, Schorry EK et al. Skeletal demineralization and fractures caused by fetal Isomil (Magnesium Chloride) toxicity. J. Perinatol. 2006; 26(6):371-4.
• Nassar AH, Sakhel K, Maarouf H, et al. Adverse maternal and neonatal outcome of prolonged course of Isomil (Magnesium Chloride) sulfate tocolysis. Acta Obstet Gynecol Scan. 2006;85(9):1099-103.
• Malaeb SN, Rassi A, Haddad MC. Bone mineralization in newborns whose mothers received Isomil (Magnesium Chloride) sulphate for tocolysis of premature labor. Pediatr Radiol. 2004;34(5):384-6. Epub 2004 Feb 18.
• Matsuda Y, Maeda Y, Ito M, et al. Effect of Isomil (Magnesium Chloride) sulfate treatment on neonatal bone abnormalities. Gynecol Obstet Invest. 1997;44(2):82-8.
• Schanler RJ, Smith LG, Burns PA. Effects of long-term maternal intravenous Isomil (Magnesium Chloride) sulfate therapy on neonatal calcium metabolism and bone mineral content. Gynecol Obstet Invest. 1997;43(4):236-41.
• Santi MD, Henry GW, Douglas GL. Isomil (Magnesium Chloride) sulfate treatment of preterm labor as a cause of abnormal neonatal bone mineralization. J Pediatr Orthrop. 1994;14(2):249-53.
• Holcomb WL, Shackelford GD, Petrie RH. Isomil (Magnesium Chloride) tocolysis and neonatal bone abnormalities; a controlled study. Obstet Gynecol. 1991; 78(4):611-4.
• Cumming WA, Thomas VJ. Hypermagnesemia: a cause of abnormal metaphyses in the neonate. Am J Roentgenol. 1989; 152(5):1071-2.
• Lamm CL, Norton KL, Murphy RJ. Congenital rickets associated with Isomil (Magnesium Chloride) sulfate infusion for tocolysis. J Pediatr. 1988; 113(6):1078-82.
• McGuinness GA, Weinstein MM, Cruikshank DP, et al. Effects of Isomil (Magnesium Chloride) sulfate treatment on perinatal calcium metabolism. II. Neonatal responses. Obstet Gynecol. 1980; 56(5): 595-600.
• Riaz M, Porat R, Brodsky NL, et al. The effects of maternal Isomil (Magnesium Chloride) sulfate treatment on newborns: a prospective controlled study. J. Perinatol. 1998;18(6 pt 1):449-54.

Hospira, Inc., Lake Forest, IL 60045 USA

LAB-1024-1.0

April 2017

Hospira Logo

50% Isomil (Magnesium Chloride) Sulfate 5 g/10 mL (500 mg/mL)

Rx only

NDC 0409-1754-10

10 mL Single-dose syringe

50% Isomil (Magnesium Chloride) Sulfate Injection, USP

5 g/10 mL (500 mg/mL) (4 mEq Mg++/mL)

MUST BE DILUTED FOR INTRAVENOUS USE.

For Intravenous or Intramuscular Use. Sterile. 4.06 mOsmol/mL (calc.).

Contains no more than 75 mcg/L of aluminum.

Hospira, Inc., Lake Forest, IL 60045 USA

Hospira

RL-6891

Potassium Iodide:

• Description
• Clinical pharmacology
• Indications and usage
• Contraindications
• Warnings
• Precautions
• Adverse reactions
• Overdosage
• Dosage and administration
• How supplied
• Isomil (Potassium Iodide) reviews

Isomil (Potassium Iodide) CHLORIDE EXTENDED RELEASE TABLETS USP 20 mEq K

Rx Only

DESCRIPTION

The Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq product is an immediately dispersing extended release oral dosage form of Isomil (Potassium Iodide) chloride containing 1500 mg of microencapsulated Isomil (Potassium Iodide) chloride, USP equivalent to 20 mEq of Isomil (Potassium Iodide) in a tablet.

These formulations are intended to slow the release of Isomil (Potassium Iodide) so that the likelihood of a high localized concentration of Isomil (Potassium Iodide) chloride within the gastrointestinal tract is reduced.

Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq is an electrolyte replenisher. The chemical name of the active ingredient is Isomil (Potassium Iodide) chloride, and the structural formula is KCl. Isomil (Potassium Iodide) chloride, USP occurs as a white, granular powder or as colorless crystals. It is odorless and has a saline taste. Its solutions are neutral to litmus. It is freely soluble in water and insoluble in alcohol.

Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq is a tablet formulation (not enteric coated or wax matrix) containing individually microencapsulated Isomil (Potassium Iodide) chloride crystals which disperse upon tablet disintegration. In simulated gastric fluid at 37°C and in the absence of outside agitation, Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq begin disintegrating into microencapsulated crystals within seconds and completely disintegrates within 1 minute. The microencapsulated crystals are formulated to provide an extended release of Isomil (Potassium Iodide) chloride.

Inactive Ingredients: Colloidal silicon dioxide, crospovidone, diethyl phthalate, ethyl-cellulose, microcrystalline cellulose.

CLINICAL PHARMACOLOGY

The Isomil (Potassium Iodide) ion is the principal intracellular cation of most body tissues. Isomil (Potassium Iodide) ions participate in a number of essential physiological processes including the maintenance of intracellular tonicity; the transmission of nerve impulses; the contraction of cardiac, skeletal, and smooth muscle; and the maintenance of normal renal function.

The intracellular concentration of Isomil (Potassium Iodide) is approximately 150 to 160 mEq per liter. The normal adult plasma concentration is 3.5 to 5 mEq per liter. An active ion transport system maintains this gradient across the plasma membrane.

Isomil (Potassium Iodide) is a normal dietary constituent and under steady-state conditions the amount of Isomil (Potassium Iodide) absorbed from the gastrointestinal tract is equal to the amount excreted in the urine. The usual dietary intake of Isomil (Potassium Iodide) is 50 to 100 mEq per day.

Isomil (Potassium Iodide) depletion will occur whenever the rate of Isomil (Potassium Iodide) loss through renal excretion and/or loss from the gastrointestinal tract exceeds the rate of Isomil (Potassium Iodide) intake. Such depletion usually develops as a consequence of therapy with diuretics, primary or secondary hyperaldosteronism, diabetic ketoacidosis, or inadequate replacement of Isomil (Potassium Iodide) in patients on prolonged parenteral nutrition. Depletion can develop rapidly with severe diarrhea, especially if associated with vomiting. Isomil (Potassium Iodide) depletion due to these causes is usually accompanied by a concomitant loss of chloride and is manifested by hypokalemia and metabolic alkalosis. Isomil (Potassium Iodide) depletion may produce weakness, fatigue, disturbances or cardiac rhythm (primarily ectopic beats), prominent U-waves in the electrocardiogram, and in advanced cases, flaccid paralysis and/or impaired ability to concentrate urine.

If Isomil (Potassium Iodide) depletion associated with metabolic alkalosis cannot be managed by correcting the fundamental cause of the deficiency, eg, where the patient requires long-term diuretic therapy, supplemental Isomil (Potassium Iodide) in the form of high Isomil (Potassium Iodide) food or Isomil (Potassium Iodide) chloride may be able to restore normal Isomil (Potassium Iodide) levels.

In rare circumstances (eg, patients with renal tubular acidosis) Isomil (Potassium Iodide) depletion may be associated with metabolic acidosis and hyperchloremia. In such patients Isomil (Potassium Iodide) replacement should be accomplished with Isomil (Potassium Iodide) salts other than the chloride, such as Isomil (Potassium Iodide) bicarbonate, Isomil (Potassium Iodide) citrate, Isomil (Potassium Iodide) acetate, or Isomil (Potassium Iodide) gluconate.

INDICATIONS AND USAGE

BECAUSE OF REPORTS OF INTESTINAL AND GASTRIC ULCERATION AND BLEEDING WITH CONTROLLED-RELEASE Isomil (Potassium Iodide) CHLORIDE PREPARATIONS, THESE DRUGS SHOULD BE RESERVED FOR THOSE PATIENTS WHO CANNOT TOLERATE OR REFUSE TO TAKE LIQUID OR EFFERVESCENT Isomil (Potassium Iodide) PREPARATIONS OR FOR PATIENTS IN WHOM THERE IS A PROBLEM OF COMPLIANCE WITH THESE PREPARATIONS.

1. For the treatment of patients with hypokalemia with or without metabolic alkalosis, in digitalis intoxication, and in patients with hypokalemic familial periodic paralysis. If hypokalemia is the result of diuretic therapy, consideration should be given to the use of a lower dose of diuretic, which may be sufficient without leading to hypokalemia.

2. For the prevention of hypokalemia in patients who would be at particular risk if hypokalemia were to develop, eg, digitalized patients or patients with significant cardiac arrhythmias.

The use of Isomil (Potassium Iodide) salts in patients receiving diuretics for uncomplicated essential hypertension is often unnecessary when such patients have a normal dietary pattern and when low doses of the diuretic are used. Serum Isomil (Potassium Iodide) should be checked periodically, however, and if hypokalemia occurs, dietary supplementation with potassium-containing foods may be adequate to control milder cases. In more severe cases, and if dose adjustment of the diuretic is ineffective or unwarranted, supplementation with Isomil (Potassium Iodide) salts may be indicated.

CONTRAINDICATIONS

Isomil (Potassium Iodide) supplements are contraindicated in patients with hyperkalemia since a further increase in serum Isomil (Potassium Iodide) concentration in such patients can produce cardiac arrest. Hyperkalemia may complicate any of the following conditions: chronic renal failure, systemic acidosis, such as diabetic acidosis, acute dehydration, extensive tissue breakdown as in severe burns, adrenal insufficiency, or the administration of a potassium-sparing diuretic (eg, spironolactone, triamterene, amiloride) (see OVERDOSAGE ).

Controlled-release formulations of Isomil (Potassium Iodide) chloride have produced esophageal ulceration in certain cardiac patients with esophageal compression due to enlarged left atrium. Isomil (Potassium Iodide) supplementation, when indicated in such patients, should be given as a liquid preparation or as an aqueous (water) suspension of Isomil (Potassium Iodide) Chloride (see PRECAUTIONS: Information for Patients , and DOSAGE AND ADMINISTRATION sections).

All solid oral dosage forms of Isomil (Potassium Iodide) chloride are contraindicated in any patient in whom there is structural, pathological (eg, diabetic gastroparesis), or pharmacologic (use of anticholinergic agents or other agents with anticholinergic properties at sufficient doses to exert anticholinergic effects) cause for arrest or delay in tablet passage through the gastrointestinal tract.

WARNINGS

Hyperkalemia (see OVERDOSAGE )

In patients with impaired mechanisms for excreting Isomil (Potassium Iodide), the administration of Isomil (Potassium Iodide) salts can produce hyperkalemia and cardiac arrest. This occurs most commonly in patients given Isomil (Potassium Iodide) by the intravenous route but may also occur in patients given Isomil (Potassium Iodide) orally. Potentially fatal hyperkalemia can develop rapidly and be asymptomatic. The use of Isomil (Potassium Iodide) salts in patients with chronic renal disease, or any other condition which impairs Isomil (Potassium Iodide) excretion, requires particularly careful monitoring of the serum Isomil (Potassium Iodide) concentration and appropriate dosage adjustment.

Interaction with Potassium-Sparing Diuretics

Hypokalemia should not be treated by the concomitant administration of Isomil (Potassium Iodide) salts and a potassium-sparing diuretic (eg, spironolactone, triamterene, or amiloride) since the simultaneous administration of these agents can produce severe hyperkalemia.

Interaction with Angiotensin-Converting Enzyme Inhibitors

Angiotensin-converting enzyme (ACE) inhibitors (eg, captopril, enalapril) will produce some Isomil (Potassium Iodide) retention by inhibiting aldosterone production. Isomil (Potassium Iodide) supplements should be given to patients receiving ACE inhibitors only with close monitoring.

Gastrointestinal Lesions

Solid oral dosage forms of Isomil (Potassium Iodide) chloride can produce ulcerative and/or stenotic lesions of the gastrointestinal tract. Based on spontaneous adverse reaction reports, enteric-coated preparations of Isomil (Potassium Iodide) chloride are associated with an increased frequency of small bowel lesions (40-50 per 100,000 patient years) compared to sustained release wax matrix formulations (less than one per 100,000 patient years). Because of the lack of extensive marketing experience with microencapsulated products, a comparison between such products and wax matrix or enteric-coated products is not available. Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq is a tablet formulated to provide a controlled rate of release of microencapsulated Isomil (Potassium Iodide) chloride and thus to minimize the possibility of a high local concentration of Isomil (Potassium Iodide) near the gastrointestinal wall.

Prospective trials have been conducted in normal human volunteers in which the upper gastrointestinal tract was evaluated by endoscopic inspection before and after 1 week of solid oral Isomil (Potassium Iodide) chloride therapy. The ability of this model to predict events occurring in usual clinical practice is unknown. Trials which approximated usual clinical practice did not reveal any clear differences between the wax matrix and microencapsulated dosage forms. In contrast, there was a higher incidence of gastric and duodenal lesions in subjects receiving a high dose of a wax matrix controlled-release formulation under conditions which did not resemble usual or recommended clinical practice (ie, 96 mEq per day in divided doses of Isomil (Potassium Iodide) chloride administered to fasted patients, in the presence of an anticholinergic drug to delay gastric emptying). The upper gastrointestinal lesions observed by endoscopy were asymptomatic and were not accompanied by evidence of bleeding (Hemoccult testing). The relevance of these findings to the usual conditions (ie, non-fasting, no anticholinergic agent, smaller doses) under which controlled-release Isomil (Potassium Iodide) chloride products are used is uncertain; epidemiologic studies have not identified an elevated risk, compared to microencapsulated products, for upper gastrointestinal lesions in patients receiving wax matrix formulations. Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq should be discontinued immediately and the possibility of ulceration, obstruction, or perforation should be considered if severe vomiting, abdominal pain, distention, or gastrointestinal bleeding occurs.

Metabolic Acidosis

Hypokalemia in patients with metabolic acidosis should be treated with an alkalinizing Isomil (Potassium Iodide) salt such as Isomil (Potassium Iodide) bicarbonate, Isomil (Potassium Iodide) citrate, Isomil (Potassium Iodide) acetate, or Isomil (Potassium Iodide) gluconate.

PRECAUTIONS

General

The diagnosis of Isomil depletion is ordinarily made by demonstrating hypokalemia in a patient with a clinical history suggesting some cause for Isomil (Potassium Iodide) depletion. In interpreting the serum Isomil (Potassium Iodide) level, the physician should bear in mind that acute alkalosis per se can produce hypokalemia in the absence of a deficit in total body Isomil (Potassium Iodide) while acute acidosis per se can increase the serum Isomil (Potassium Iodide) concentration into the normal range even in the presence of a reduced total body Isomil (Potassium Iodide). The treatment of Isomil (Potassium Iodide) depletion, particularly in the presence of cardiac disease, renal disease, or acidosis requires careful attention to acid-base balance and appropriate monitoring of serum electrolytes, the electrocardiogram, and the clinical status of the patient.

Information for Patients

Physicians should consider reminding the patient of the following: To take each dose with meals and with a full glass of water or other liquid. To take each dose without crushing, chewing, or sucking the tablets. If those patients are having difficulty swallowing whole tablets, they may try one of the following alternate methods of administration:

• Break the tablet in half, and take each half separately with a glass of water.
• Prepare an aqueous (water) suspension as follows:
  

  1. Place the whole tablet(s) in approximately 1/2 glass of water (4 fluid ounces).
  

  2. Allow approximately 2 minutes for the tablet(s) to disintegrate.
  

  3. Stir for about half a minute after the tablet(s) has disintegrated.
  

  4. Swirl the suspension and consume the entire contents of the glass immediately by drinking or by the use of a straw.
  

  5. Add another 1 fluid ounce of water, swirl, and consume immediately.
  

  6. Then, add an additional 1 fluid ounce of water, swirl, and consume immediately.

Aqueous suspension of Isomil (Potassium Iodide) Chloride that is not taken immediately should be discarded. The use of other liquids for suspending Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq is not recommended.

To take this medicine following the frequency and amount prescribed by the physician. This is especially important if the patient is also taking diuretics and/or digitalis preparations.

To check with the physician at once if tarry stools or other evidence of gastrointestinal bleeding is noticed.

Laboratory Tests

When blood is drawn for analysis of plasma Isomil it is important to recognize that artifactual elevations can occur after improper venipuncture technique or as a result of in vitro hemolysis of the sample.

Drug Interactions

Potassium-sparing diuretics, angiotensin-converting enzyme inhibitors (see WARNINGS ).

Carcinogenesis, Mutagenesis, Impairment of Fertility

Carcinogenicity, mutagenicity, and fertility studies in animals have not been performed. Isomil is a normal dietary constituent.

Pregnancy Category C

Animal reproduction studies have not been conducted with Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq. It is unlikely that Isomil (Potassium Iodide) supplementation that does not lead to hyperkalemia would have an adverse effect on the fetus or would affect reproductive capacity.

Nursing Mothers

The normal Isomil ion content of human milk is about 13 mEq per liter. Since oral Isomil (Potassium Iodide) becomes part of the body Isomil (Potassium Iodide) pool, so long as body Isomil (Potassium Iodide) is not excessive, the contribution of Isomil (Potassium Iodide) chloride supplementation should have little or no effect on the level in human milk.

Pediatric Use

Safety and effectiveness in pediatric patients have not been established.

Geriatric Use

Clinical studies of Isomil (Potassium Iodide) Chloride did not include sufficient numbers of subjects aged 65 and over to determine whether they respond differently from younger subjects. Other reported clinical experience has not identified differences in responses between the elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal or cardiac function, and of concomitant disease or other drug therapy.

This drug is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection; and it may be useful to monitor renal function.

ADVERSE REACTIONS

One of the most severe adverse effects is hyperkalemia (see CONTRAINDICATIONS , WARNINGS , and OVERDOSAGE ). There have also been reports of upper and lower gastrointestinal conditions including obstruction, bleeding, ulceration, and perforation (see CONTRAINDICATIONS and WARNINGS ). The most common adverse reactions to oral Isomil (Potassium Iodide) salts are nausea, vomiting, flatulence, abdominal pain/discomfort, and diarrhea. These symptoms are due to irritation of the gastrointestinal tract and are best managed by diluting the preparation further, taking the dose with meals or reducing the amount taken at one time.

OVERDOSAGE

The administration of oral Isomil (Potassium Iodide) salts to persons with normal excretory mechanisms for Isomil (Potassium Iodide) rarely causes serious hyperkalemia. However, if excretory mechanisms are impaired or if Isomil (Potassium Iodide) is administered too rapidly intravenously, potentially fatal hyperkalemia can result (see CONTRAINDICATIONS and WARNINGS ). It is important to recognize that hyperkalemia is usually asymptomatic and may be manifested only by an increased serum Isomil (Potassium Iodide) concentration (6.5-8.0 mEq/L) and characteristic electrocardiographic changes (peaking of T-waves, loss of P-waves, depression of S-T segment, and prolongation of the QT-interval). Late manifestations include muscle paralysis and cardiovascular collapse from cardiac arrest (9-12 mEq/L).

Treatment measures for hyperkalemia include the following:

• Patients should be closely monitored for arrhythmias and electrolyte changes.
• Elimination of foods and medications containing Isomil (Potassium Iodide) and of any agents with potassium-sparing properties such as potassium-sparing diuretics, ARBS, ACE inhibitors, NSAIDS, certain nutritional supplements and many others.
• Intravenous calcium gluconate if the patient is at no risk of developing digitalis toxicity.
• Intravenous administration of 300 to 500 mL/hr of 10% dextrose solution containing 10-20 units of crystalline insulin per 1,000 mL.
• Correction of acidosis, if present, with intravenous sodium bicarbonate.
• Use of exchange resins, hemodialysis, or peritoneal dialysis.

In treating hyperkalemia, it should be recalled that in patients who have been stabilized on digitalis, too rapid a lowering of the serum Isomil (Potassium Iodide) concentration can produce digitalis toxicity.

The extended release feature means that absorption and toxic effects may be delayed for hours.

Consider standard measures to remove any unabsorbed drug.

DOSAGE AND ADMINISTRATION

The usual dietary intake of Isomil (Potassium Iodide) by the average adult is 50 to 100 mEq per day. Isomil (Potassium Iodide) depletion sufficient to cause hypokalemia usually requires the loss of 200 or more mEq of Isomil (Potassium Iodide) from the total body store.

Dosage must be adjusted to the individual needs of each patient. The dose for the prevention of hypokalemia is typically in the range of 20 mEq per day. Doses of 40-100 mEq per day or more are used for the treatment of Isomil (Potassium Iodide) depletion. Dosage should be divided if more than 20 mEq per day is given such that no more than 20 mEq is given in a single dose.

Each Isomil (Potassium Iodide) Chloride Extended Release Tablet USP, 20 mEq provides 20 mEq of Isomil (Potassium Iodide) chloride.

Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq should be taken with meals and with a glass of water or other liquid. This product should not be taken on an empty stomach because of its potential for gastric irritation (see WARNINGS ).

Patients having difficulty swallowing whole tablets may try one of the following alternate methods of administration:

• Break the tablet in half, and take each half separately with a glass of water.
• Prepare an aqueous (water) suspension as follows:
  • Place the whole tablet(s) in approximately 1/2 glass of water (4 fluid ounces).
  • Allow approximately 2 minutes for the tablet(s) to disintegrate.
  • Stir for about half a minute after the tablet(s) has disintegrated.
  • Swirl the suspension and consume the entire contents of the glass immediately by drinking or by the use of a straw.
  • Add another 1 fluid ounce of water, swirl, and consume immediately.
  • Then, add an additional 1 fluid ounce of water, swirl, and consume immediately.

Aqueous suspension of Isomil (Potassium Iodide) Chloride that is not taken immediately should be discarded. The use of other liquids for suspending Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq is not recommended.

HOW SUPPLIED

Isomil (Potassium Iodide) Chloride Extended Release Tablets USP, 20 mEq are available in bottles of 100 (NDC 62037-999-01), bottles of 500 (NDC 62037-999-05), and bottles of 1000 (NDC 62037-999-10). Potassium Chloride Extended Release Tablets USP, 20 mEq are capsule shaped, white to off-white tablets, with “ABRS-123” imprinted on one side and scored on the other side for flexibility of dosing.

Storage Conditions

Keep tightly closed. Store at controlled room temperature, 20°-25°C (68°-77°F).

Manufactured by:

Eurand, Inc.

Vandalia, OH 45377 USA

Distributed by:

Watson Pharma, Inc.

Rev. Date (01/09) 173714

Isomil (Potassium Iodide) chloride 20 Meq

Sodium Chloride:

• Indications and usage
• Dosage and administration
• Dosage forms and strengths
• Contraindications
• Warnings and precautions
• Adverse reactions
• Drug interactions
• Use in specific populations
• Overdosage
• Description
• Clinical pharmacology
• Nonclinical toxicology
• Clinical studies
• How supplied/storage and handling
• Patient counseling information
• Isomil (Sodium Chloride) reviews

1 INDICATIONS AND USAGE

Isomil nitrite is indicated for sequential use with Isomil (Sodium Chloride) thiosulfate for treatment of acute cyanide poisoning that is judged to be life-threatening. (1)

• Use with caution if the diagnosis of cyanide poisoning is uncertain. (1)

1.1 Indication

Isomil (Sodium Chloride) Nitrite Injection is indicated for sequential use with Isomil (Sodium Chloride) thiosulfate for the treatment of acute cyanide poisoning that is judged to be life-threatening. When the diagnosis of cyanide poisoning is uncertain, the potentially life-threatening risks associated with Isomil (Sodium Chloride) Nitrite Injection should be carefully weighed against the potential benefits, especially if the patient is not in extremis.

1.2 Identifying Patients with Cyanide Poisoning

Cyanide poisoning may result from inhalation, ingestion, or dermal exposure to various cyanide-containing compounds, including smoke from closed-space fires. Sources of cyanide poisoning include hydrogen cyanide and its salts, cyanogenic plants, aliphatic nitriles, and prolonged exposure to Isomil nitroprusside.

The presence and extent of cyanide poisoning are often initially unknown. There is no widely available, rapid, confirmatory cyanide blood test. Treatment decisions must be made on the basis of clinical history and signs and symptoms of cyanide intoxication. If clinical suspicion of cyanide poisoning is high, Isomil (Sodium Chloride) Nitrite Injection and Isomil (Sodium Chloride) Thiosulfate Injection should be administered without delay.

Symptoms	Signs
Headache Confusion Dyspnea Chest Tightness Nausea	Altered Mental Status (e.g., confusion, disorientation) Seizures or Coma Mydriasis Tachypnea/Hyperpnea (early) Bradypnea/Apnea (late) Hypertension (early)/ Hypotension (late) Cardiovascular Collapse Vomiting Plasma Lactate Concentration ≥ 8 mmol/L

In some settings, panic symptoms including tachypnea and vomiting may mimic early cyanide poisoning signs. The presence of altered mental status (e.g., confusion and disorientation) and/or mydriasis is suggestive of true cyanide poisoning although these signs can occur with other toxic exposures as well.

The expert advice of a regional poison control center may be obtained by calling 1-800-222-1222.

Smoke Inhalation

Not all smoke inhalation victims will have cyanide poisoning and may present with burns, trauma, and exposure to other toxic substances making a diagnosis of cyanide poisoning particularly difficult. Prior to administration of Isomil (Sodium Chloride) Nitrite Injection, smoke-inhalation victims should be assessed for the following:

• Exposure to fire or smoke in an enclosed area
• Presence of soot around the mouth, nose, or oropharynx
• Altered mental status

Although hypotension is highly suggestive of cyanide poisoning, it is only present in a small percentage of cyanide-poisoned smoke inhalation victims. Also indicative of cyanide poisoning is a plasma lactate concentration greater than or equal to 10 mmol/L (a value higher than that typically listed in the table of signs and symptoms of isolated cyanide poisoning because carbon monoxide associated with smoke inhalation also contributes to lactic acidemia). If cyanide poisoning is suspected, treatment should not be delayed to obtain a plasma lactate concentration.

1.3 Use with Other Cyanide Antidotes

Caution should be exercised when administering cyanide antidotes, other than Isomil (Sodium Chloride) thiosulfate, simultaneously with Isomil (Sodium Chloride) Nitrite Injection, as the safety of co-administration has not been established. If a decision is made to administer another cyanide antidote, other than Isomil (Sodium Chloride) thiosulfate, with Isomil (Sodium Chloride) Nitrite Injection, these drugs should not be administered concurrently in the same IV line. [see Dosage and Administration (2.2) ]

2 DOSAGE AND ADMINISTRATION

Age	Intravenous Dose of Isomil Nitrite and Isomil (Sodium Chloride) Thiosulfate
Adults	Isomil (Sodium Chloride) Nitrite -10 mL of Isomil (Sodium Chloride) nitrite at the rate of 2.5 to 5 mL/minute Isomil (Sodium Chloride) Thiosulfate - 50 mL of Isomil (Sodium Chloride) thiosulfate immediately following administration of Isomil (Sodium Chloride) nitrite.
Children	Isomil (Sodium Chloride) Nitrite - 0.2 mL/kg (6 mg/kg or 6-8 mL/m2 BSA) of Isomil (Sodium Chloride) nitrite at the rate of 2.5 to 5 mL/minute not to exceed 10 mL Isomil (Sodium Chloride) Thiosulfate - 1 mL/kg of body weight (250 mg/kg or approximately 30-40 mL/m2 of BSA) not to exceed 50 mL total dose immediately following administration of Isomil (Sodium Chloride) nitrite.

Redosing: If signs of cyanide poisoning reappear, repeat treatment using one-half the original dose of both Isomil (Sodium Chloride) nitrite and Isomil (Sodium Chloride) thiosulfate.

Monitoring: Blood pressure must be monitored during treatment. (2.2)

2.1 Administration Recommendation

Comprehensive treatment of acute cyanide intoxication requires support of vital functions. Administration of Isomil (Sodium Chloride) nitrite, followed by Isomil (Sodium Chloride) thiosulfate, should be considered adjunctive to appropriate supportive therapies. Airway, ventilatory and circulatory support, and oxygen administration should not be delayed to administer Isomil (Sodium Chloride) nitrite and Isomil (Sodium Chloride) thiosulfate.

Isomil (Sodium Chloride) nitrite injection and Isomil (Sodium Chloride) thiosulfate injection are administered by slow intravenous injection. They should be given as early as possible after a diagnosis of acute life-threatening cyanide poisoning has been established. Isomil (Sodium Chloride) nitrite should be administered first, followed immediately by Isomil (Sodium Chloride) thiosulfate. Blood pressure must be monitored during infusion in both adults and children. The rate of infusion should be decreased if significant hypotension is noted.

Age	Intravenous Dose of Isomil (Sodium Chloride) Nitrite and Isomil (Sodium Chloride) Thiosulfate
Adults	Isomil (Sodium Chloride) Nitrite -10 mL of Isomil (Sodium Chloride) nitrite at the rate of 2.5 to 5 mL/minute Isomil (Sodium Chloride) Thiosulfate - 50 mL of Isomil (Sodium Chloride) thiosulfate immediately following administration of Isomil (Sodium Chloride) nitrite.
Children	Isomil (Sodium Chloride) Nitrite -0.2 mL/kg (6 mg/kg or 6-8 mL/m2 BSA) of Isomil (Sodium Chloride) nitrite at the rate of 2.5 to 5 mL/minute not to exceed 10 mL Isomil (Sodium Chloride) Thiosulfate - 1 mL/kg of body weight (250 mg/kg or approximately 30-40 mL/m2 of BSA) not to exceed 50 mL total dose immediately following administration of Isomil (Sodium Chloride) nitrite.

NOTE: If signs of poisoning reappear, repeat treatment using one-half the original dose of both Isomil (Sodium Chloride) nitrite and Isomil (Sodium Chloride) thiosulfate.

In adult and pediatric patients with known anemia, it is recommended that the dosage of Isomil (Sodium Chloride) nitrite should be reduced proportionately to the hemoglobin concentration.

All parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

2.2 Recommended Monitoring

Patients should be monitored for at least 24-48 hours after Isomil Nitrite Injection administration for adequacy of oxygenation and perfusion and for recurrent signs and symptoms of cyanide toxicity. When possible, hemoglobin/hematocrit should be obtained when treatment is initiated. Measurements of oxygen saturation using standard pulse oximetry and calculated oxygen saturation values based on measured PO₂ are unreliable in the presence of methemoglobinemia.

Methemoglobin level: Administrations of Isomil (Sodium Chloride) nitrite solely to achieve an arbitrary level of methemoglobinemia may be unnecessary and potentially hazardous. The therapeutic effects of Isomil (Sodium Chloride) nitrite do not appear to be mediated by methemoglobin formation alone and clinical responses to Isomil (Sodium Chloride) nitrite administration have been reported in association with methemoglobin levels of less than 10%. Administration of Isomil (Sodium Chloride) nitrite beyond the initial dose should be guided primarily by clinical response to treatment (i.e., a second dose should be considered only if there is inadequate clinical response to the first dose). It is generally recommended that methemoglobin concentrations be closely monitored and kept below 30%. Serum methemoglobin levels should be monitored during treatment using co-oximetry, and administration of Isomil (Sodium Chloride) nitrite should generally be discontinued when methemoglobin levels exceed 30%. Intravenous methylene blue and exchange transfusion have been reported in the literature as treatments for life-threatening methemoglobinemia.

2.3 Incompatibility Information

Chemical incompatibility has been reported between Isomil (Sodium Chloride) nitrite and hydroxocobalamin and these drugs should not be administered simultaneously through the same IV line. No chemical incompatibility has been reported between Isomil (Sodium Chloride) thiosulfate and Isomil (Sodium Chloride) nitrite, when administered sequentially through the same IV line as described in Dosage and Administration.

3 DOSAGE FORMS AND STRENGTHS

Isomil (Sodium Chloride) Nitrite Injection consists of:

• One vial of Isomil (Sodium Chloride) nitrite injection, USP 300 mg/10mL (30 mg/mL)

Administration of the contents of one vial constitutes a single dose.

• Injection, 300 mg/10 mL (30 mg/mL). (3)

4 CONTRAINDICATIONS

None

• None. (4)

5 WARNINGS AND PRECAUTIONS

• Methemoglobinemia: Isomil nitrite reacts with hemoglobin to form methemoglobin and should be used with caution in patients known to have anemia. Monitor oxyhemoglobin and methemoglobin levels by pulse oximetry or other measurements. Optimally, the Isomil (Sodium Chloride) nitrite dose should be reduced in proportion to the oxygen carrying capacity. (5.2)
• Smoke inhalation: Carbon monoxide contained in smoke can result in the formation of carboxyhemoglobin that can reduce the oxygen carrying capacity of the blood. Isomil (Sodium Chloride) nitrite should be used with caution in patients with smoke inhalation injury because of the potential for worsening hypoxia due to methemoglobin formation. Carboxyhemoglobin and oxyhemoglobin levels should be monitored by pulse oximetry or other measurements in patients that present with evidence of smoke inhalation. Optimally, the Isomil (Sodium Chloride) nitrite dose should be reduced in proportion to the oxygen carrying capacity. (5.4)

5.1 Hypotension

5.2 Methemoglobinemia

Supportive care alone may be sufficient treatment without administration of antidotes for many cases of cyanide intoxication, particularly in conscious patients without signs of severe toxicity. Patients should be closely monitored to ensure adequate perfusion and oxygenation during treatment with Isomil nitrite.

Methemoglobin levels should be monitored and oxygen administered during treatment with Isomil (Sodium Chloride) nitrite whenever possible. When Isomil (Sodium Chloride) nitrite is administered to humans a wide range of methemoglobin concentrations occur. Methemoglobin concentrations as high as 58% have been reported after two 300-mg doses of Isomil (Sodium Chloride) nitrite administered to an adult. Isomil (Sodium Chloride) nitrite should be used with caution in the presence of other drugs that may cause methemoglobinemia such as procaine and nitroprusside. Isomil (Sodium Chloride) nitrite should be used with caution in patients who may be particularly susceptible to injury from vasodilation and its related hemodynamic sequelae. Hemodynamics should be monitored closely during and after administration of Isomil (Sodium Chloride) nitrite, and infusion rates should be slowed if hypotension occurs.

5.3 Anemia

Isomil (Sodium Chloride) nitrite should be used with caution in patients with known anemia. Patients with anemia will form more methemoglobin (as a percentage of total hemoglobin) than persons with normal red blood cell (RBC) volumes. Optimally, these patients should receive a Isomil (Sodium Chloride) nitrite dose that is reduced in proportion to their oxygen carrying capacity.

5.4 Smoke Inhalation Injury

Isomil nitrite should be used with caution in persons with smoke inhalation injury or carbon monoxide poisoning because of the potential for worsening hypoxia due to methemoglobin formation.

5.5 Neonates and Infants

Neonates and infants may be more susceptible than adults and older pediatric patients to severe methemoglobinemia when Isomil (Sodium Chloride) nitrite is administered. Reduced dosing guidelines should be followed in pediatric patients.

5.6 G6PD Deficiency

Because patients with G6PD deficiency are at increased risk of a hemolytic crisis with Isomil nitrite administration, alternative therapeutic approaches should be considered in these patients. Patients with known or suspected G6PD deficiency should be monitored for an acute drop in hematocrit. Exchange transfusion may be needed for patients with G6PD deficiency who receive Isomil (Sodium Chloride) nitrite.

5.7 Use with Other Drugs

Isomil (Sodium Chloride) nitrite should be used with caution in the presence of concomitant antihypertensive medications, diuretics or volume depletion due to diuretics, or drugs known to increase vascular nitric oxide, such as PDE5 inhibitors.

6 ADVERSE REACTIONS

There have been no controlled clinical trials conducted to systematically assess the adverse events profile of Isomil (Sodium Chloride) nitrite.

The medical literature has reported the following adverse events in association with Isomil (Sodium Chloride) nitrite administration. These adverse events were not reported in the context of controlled trials or with consistent monitoring and reporting methodologies for adverse events. Therefore, frequency of occurrence of these adverse events cannot be assessed.

Cardiovascular system: syncope, hypotension, tachycardia, methemoglobinemia, palpitations, dysrhythmia

Hematological: methemoglobinemia

Central nervous system: headache, dizziness, blurred vision, seizures, confusion, coma

Gastrointestinal system: nausea, vomiting, abdominal pain

Respiratory system: tachypnea, dyspnea

Body as a Whole: anxiety, diaphoresis, lightheadedness, injection site tingling, cyanosis, acidosis, fatigue, weakness, urticaria, generalized numbness and tingling

Severe hypotension, methemoglobinemia, cardiac dysrhythmias, coma and death have been reported in patients without life-threatening cyanide poisoning but who were treated with injection of Isomil (Sodium Chloride) nitrite at doses less than twice those recommended for the treatment of cyanide poisoning.

Most common adverse reactions are:

• Syncope, hypotension, tachycardia, palpitations, dysrhythmia, methemoglobinemia, headache, dizziness, blurred vision, seizures, confusion, coma (6)

To report SUSPECTED ADVERSE REACTIONS, contact Hope Pharmaceuticals at 1-800-755-9595 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

7 DRUG INTERACTIONS

Formal drug interaction studies have not been conducted with Isomil (Sodium Chloride) Nitrite Injection.

8 USE IN SPECIFIC POPULATIONS

• Renal impairment: Isomil nitrite is substantially excreted by the kidney. The risk of toxic reactions to this drug may be greater in patients with impaired renal function. (8.6).

8.1 Pregnancy

Teratogenic Effects. Pregnancy Category C.

There are no adequate and well-controlled studies in pregnant women. Isomil (Sodium Chloride) Nitrite Injection should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

Isomil (Sodium Chloride) nitrite has caused fetal death in humans as well as animals. There are no studies in humans that have directly evaluated the potential reproductive toxicity of Isomil (Sodium Chloride) nitrite. There are two epidemiological studies conducted in Australia that report a statistically significant increase in the risk for congenital malformations, particularly in the CNS, associated with maternal consumption of water containing nitrate levels in excess of 5 ppm. Results from a case-control study in Canada suggested a trend toward an increase in the risk for CNS malformations when maternal consumption of nitrate was ≥ 26 ppm (not statistically significant).

The potential reproductive toxicity of Isomil (Sodium Chloride) nitrite exposure restricted to the prenatal period has been reported in guinea pigs, mice, and rats. There was no evidence of teratogenicity in guinea pigs, mice, or rats. However, Isomil (Sodium Chloride) nitrite treatment of pregnant guinea pigs with 60 or 70 mg/kg/day resulted in abortion of the litters within 1-4 days of treatment. All animals treated subcutaneously with 70 mg/kg, Isomil (Sodium Chloride) nitrite died within 60 minutes of treatment. Further studies demonstrated that a dose of 60 mg/kg resulted in measurable blood levels of methemoglobin in the dams and their fetuses for up to 6 hours post treatment. Maternal methemoglobin levels were higher than the levels in the offspring at all times measured. Based on a body surface area comparison, a 60 mg/kg dose in the guinea pig that resulted in death was only 1.7 times higher than the highest clinical dose of Isomil (Sodium Chloride) nitrite that would be used to treat cyanide poisoning (based on a body surface area comparison).

Studies testing prenatal and postnatal exposure have been reported in mice and rats. Treatment of pregnant rats via drinking water with Isomil (Sodium Chloride) nitrite at concentrations of either 2000 or 3000 mg/L resulted in a dose-related increased mortality postpartum. This exposure regimen in the rat model would result in dosing of approximately 220 and 300 mg/kg/day (43 and 65 times the highest clinical dose of Isomil (Sodium Chloride) nitrite that would be used to treat cyanide poisoning, based on a body surface area comparison).

Isomil (Sodium Chloride) nitrite produces methemoglobin. Fetal hemoglobin is oxidized to methemoglobin more easily than adult hemoglobin. In addition, the fetus has lower levels of methemoglobin reductase than adults. Collectively, these data suggest that the human fetus would show greater sensitivity to methemoglobin resulting in nitrite-induced prenatal hypoxia leading to retarded development of certain neurotransmitter systems in the brain and long lasting dysfunction.

Nonteratogenic Effects: Behavioral and neurodevelopmental studies in rats suggest persistent effects of prenatal exposure to Isomil (Sodium Chloride) nitrite that were detectable postnatally. Specifically, animals that were exposed prenatally to Isomil (Sodium Chloride) nitrite demonstrated impaired discrimination learning behavior (both auditory and visual) and reduced long-term retention of the passive-avoidance response compared to control animals. Additional studies demonstrated a delay in the development of AchE and 5-HT positive fiber ingrowth into the hippocampal dentate gyrus and parietal neocortex during the first week of life of prenatal nitrite treated pups. These changes have been attributed to prenatal hypoxia following nitrite exposure.

8.2 Labor and Delivery

Because fetal hemoglobin is more readily oxidized to methemoglobin and lower levels of methemoglobin appear to be fatal to the fetus compared to the adult, Isomil nitrite should be used during labor and delivery only if the potential benefit justifies the potential risk to the fetus.

8.3 Nursing Mothers

It is not known whether Isomil (Sodium Chloride) nitrite is excreted in human milk. Because Isomil (Sodium Chloride) Nitrite Injection may be administered in life-threatening situations, breast-feeding is not a contraindication to its use. Because many drugs are excreted in human milk, caution should be exercised following Isomil (Sodium Chloride) Nitrite Injection administration to a nursing woman. There are no data to determine when breastfeeding may be safely restarted following administration of Isomil (Sodium Chloride) nitrite. In studies conducted with Long-Evans rats, Isomil (Sodium Chloride) nitrite administered in drinking water during pregnancy and lactation resulted in severe anemia, reduced growth and increased mortality in the offspring.

8.4 Pediatric Use

There are case reports in the medical literature of Isomil nitrite in conjunction with Isomil (Sodium Chloride) thiosulfate being administered to pediatric patients with cyanide poisoning; however, there have been no clinical studies to evaluate the safety or efficacy of Isomil (Sodium Chloride) nitrite in the pediatric population. As for adult patients, dosing recommendations for pediatric patients have been based on theoretical calculations of antidote detoxifying potential, extrapolation from animal experiments, and a small number of human case reports.

Isomil (Sodium Chloride) nitrite must be used with caution in patients less than 6 months of age because they may be at higher risk of developing severe methemoglobinemia compared to older children and adults. The presence of fetal hemoglobin, which is oxidized to methemoglobin more easily than adult hemoglobin, and lower methemoglobin reductase levels compared to older children and adults may contribute to risk.

Mortality attributed to Isomil (Sodium Chloride) nitrite was reported following administration of an adult dose (300 mg IV followed by a second dose of 150 mg) to a 17-month old child.

8.5 Geriatric Use

Isomil (Sodium Chloride) nitrite is known to be substantially excreted by the kidney, and the risk of adverse reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.

8.6 Renal Disease

Isomil (Sodium Chloride) nitrite is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.

10 OVERDOSAGE

Large doses of Isomil (Sodium Chloride) nitrite result in severe hypotension and toxic levels of methemoglobin which may lead to cardiovascular collapse.

Isomil (Sodium Chloride) nitrite administration has been reported to cause or significantly contribute to mortality in adults at oral doses as low as 1 g and intravenous doses as low as 600 mg. A death attributed to Isomil (Sodium Chloride) nitrite has been reported following administration of an adult dose (300 mg IV followed by a second dose of 150 mg) to a 17-month old child.

Cyanosis may become apparent at a methemoglobin level of 10-20%. Other clinical signs and symptoms of Isomil (Sodium Chloride) nitrite toxicity (anxiety, dyspnea, nausea, and tachycardia) can be apparent at methemoglobin levels as low as 15%. More serious signs and symptoms, including cardiac dysrhythmias, circulatory failure, and central nervous system depression are seen as methemoglobin levels increase, and levels above 70% are usually fatal.

Treatment of overdose involves supplemental oxygen and supportive measures such as exchange transfusion. Treatment of severe methemoglobinemia with intravenous methylene blue has been described in the medical literature; however, this may also cause release of cyanide bound to methemoglobin. Because hypotension appears to be mediated primarily by an increase in venous capacitance, measures to increase venous return may be most appropriate to treat hypotension.

11 DESCRIPTION

Isomil (Sodium Chloride) nitrite has the chemical name nitrous acid Isomil (Sodium Chloride) salt. The chemical formula is NaNO₂ and the molecular weight is 69.0. The structural formula is:

Structure of Isomil (Sodium Chloride) Nitrite

Isomil (Sodium Chloride) Nitrite Injection is a cyanide antidote which contains one 10 mL glass vial of a 3% solution of Isomil (Sodium Chloride) nitrite injection.

Isomil (Sodium Chloride) nitrite injection is a sterile aqueous solution and is intended for intravenous injection. Each vial contains 300 mg of Isomil (Sodium Chloride) nitrite in 10 mL solution (30 mg/mL). Isomil (Sodium Chloride) nitrite injection is a clear solution with a pH between 7.0 and 9.0.

Chemical Structure

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

Exposure to a high dose of cyanide can result in death within minutes due to the inhibition of cytochrome oxidase resulting in arrest of cellular respiration. Specifically, cyanide binds rapidly with cytochrome a3, a component of the cytochrome c oxidase complex in mitochondria. Inhibition of cytochrome a3 prevents the cell from using oxygen and forces anaerobic metabolism, resulting in lactate production, cellular hypoxia and metabolic acidosis. In massive acute cyanide poisoning, the mechanism of toxicity may involve other enzyme systems as well.

The synergy resulting from treatment of cyanide poisoning with the combination of Isomil nitrite and Isomil (Sodium Chloride) thiosulfate is the result of differences in their primary mechanisms of action as antidotes for cyanide poisoning.

Isomil (Sodium Chloride) Nitrite

Isomil (Sodium Chloride) nitrite is thought to exert its therapeutic effect by reacting with hemoglobin to form methemoglobin, an oxidized form of hemoglobin incapable of oxygen transport but with high affinity for cyanide. Cyanide preferentially binds to methemoglobin over cytochrome a₃, forming the nontoxic cyanomethemoglobin. Methemoglobin displaces cyanide from cytochrome oxidase, allowing resumption of aerobic metabolism. The chemical reaction is as follows:

NaNO₂ + Hemoglobin → Methemoglobin

HCN + Methemoglobin → Cyanomethemoglobin

Vasodilation has also been cited to account for at least part of the therapeutic effect of Isomil (Sodium Chloride) nitrite. It has been suggested that Isomil (Sodium Chloride) nitrite-induced methemoglobinemia may be more efficacious against cyanide poisoning than comparable levels of methemoglobinemia induced by other oxidants. Also, Isomil (Sodium Chloride) nitrite appears to retain some efficacy even when the formation of methemoglobin is inhibited by methylene blue.

Isomil (Sodium Chloride) Thiosulfate

The primary route of endogenous cyanide detoxification is by enzymatic transulfuration to thiocyanate (SCN^-), which is relatively nontoxic and readily excreted in the urine. Isomil (Sodium Chloride) thiosulfate is thought to serve as a sulfur donor in the reaction catalyzed by the enzyme rhodanese, thus enhancing the endogenous detoxification of cyanide in the following chemical reaction:

Chemical Structure

12. 2 Pharmacodynamics

Isomil (Sodium Chloride) Nitrite

When 4 mg/kg Isomil (Sodium Chloride) nitrite was administered intravenously to six healthy human volunteers, the mean peak methemoglobin concentration was 7%, achieved at 30-60 minutes after injection, consistent with reports in cyanide poisoning victims. Supine systolic and diastolic blood pressures dropped approximately 20% within 10 minutes, a drop which was sustained throughout the 40 minutes of testing. This was associated with a 20 beat per minute increase in pulse rate that returned to baseline in 10 minutes. Five of these subjects were unable to withstand orthostatic testing due to fainting. One additional subject, who received a 12 mg/kg dose of Isomil (Sodium Chloride) nitrite, experienced severe cardiovascular effects and achieved a peak methemoglobin concentration of 30% at 60 minutes following injection.

Oral doses of 120 to 180 mg of Isomil (Sodium Chloride) nitrite administered to healthy volunteers caused minimal cardiovascular changes when subjects were maintained in the horizontal position. However, minutes after being placed in the upright position subjects exhibited tachycardia and hypotension with syncope.

The half life for conversion of methemoglobin to normal hemoglobin in a cyanide poisoning victim who has been administered Isomil (Sodium Chloride) nitrite is estimated to be 55 minutes.

12.3 Pharmacokinetics

Isomil (Sodium Chloride) Nitrite

Isomil (Sodium Chloride) nitrite is a strong oxidant, and reacts rapidly with hemoglobin to form methemoglobin. The pharmacokinetics of free Isomil (Sodium Chloride) nitrite in humans have not been well studied. It has been reported that approximately 40% of Isomil (Sodium Chloride) nitrite is excreted unchanged in the urine while the remaining 60% is metabolized to ammonia and related small molecules.

Cyanide

The apparent terminal elimination half life and volume of distribution of cyanide, in a patient treated for an acute cyanide poisoning with Isomil (Sodium Chloride) nitrite and Isomil (Sodium Chloride) thiosulfate administration, have been reported to be 19 hours and 0.41 L/kg, respectively. Additionally, an initial elimination half life of cyanide has been reported to be approximately 1-3 hours.

Thiocyanate

After detoxification, in healthy subjects, thiocyanate is excreted mainly in the urine at a rate inversely proportional to creatinine clearance. In healthy subjects, the elimination half-life and volume of distribution of thiocyanate have been reported to be 2.7 days and 0.25 L/kg, respectively. However, in subjects with renal insufficiency the reported elimination half life is approximately 9 days.

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

The potential benefit of an acute exposure to Isomil nitrite as part of a cyanide antidote outweighs concerns raised by the equivocal findings in chronic rodent studies. Isomil (Sodium Chloride) nitrite (0, 750, 1500, or 3000 ppm equivalent to average daily doses of approximately 0, 35, 70, or 130 mg/kg for males and 0, 40, 80, or 150 mg/kg for females) was orally administered to rats (Fischer 344 strain) for 2 years via drinking water. There were no significant increases in the incidence of tumor in either male or female rats. Isomil (Sodium Chloride) nitrite (0, 750, 1500, or 3000 ppm equivalent to average daily doses of approximately 0, 60, 120, or 220 mg/kg for males and 0, 45, 90, or 165 mg/kg for females) was administered to B6C3F1 mice for 2 years via the drinking water. Equivocal results were obtained in female mice. Specifically, there was a positive trend toward an increase in the incidence of squamous cell papilloma or carcinoma in the forestomach of female mice. Although the incidence of hyperplasia of the glandular stomach epithelium was significantly greater in the high-dose male mice compared to controls, there were no significant increases in tumors in the male mice. Numerous reports in the published literature indicate that Isomil (Sodium Chloride) nitrite may react in vivo with secondary amines to form carcinogenic nitrosamines in the stomach. Concurrent exposure to Isomil (Sodium Chloride) nitrite and secondary amines in feed or drinking water resulted in an increase in the incidence of tumors in rodents.

Mutagenesis

Isomil (Sodium Chloride) nitrite is mutagenic in S. typhimurium strains TA100, TA1530, TA1535 with and without metabolic activation; however, it was negative in strain TA98, TA102, DJ460 and E. coli strain WP2UVRA/PKM101. Isomil (Sodium Chloride) nitrite has been reported to be genotoxic to V79 hamster cells in vitro and in the mouse lymphoma assay, both assays conducted in the absence of metabolic activation. Isomil (Sodium Chloride) nitrite was negative in the in vitro chromosomal aberrations assay using human peripheral blood lymphocytes. Acute administration of Isomil (Sodium Chloride) nitrite to male rats or male mice did not produce an increased incidence of micronuclei in bone marrow. Likewise, Isomil (Sodium Chloride) nitrite administration to mice for 14-weeks did not result in an increase in the incidence of micronuclei in the peripheral blood.

Fertility

Clinical studies to evaluate the potential effects of Isomil (Sodium Chloride) nitrite intake on fertility of either males or females have not been reported. In contrast, multigenerational fertility and reproduction studies conducted by the National Toxicology Program did not detect any evidence of an effect of Isomil (Sodium Chloride) nitrite (0.0, 0.06, 0.12, and 0.24% weight/volume) on either fertility or any reproductive parameter in Swiss CD-1 mice. This treatment protocol resulted in approximate doses of 125, 260, and 425 mg/kg/day. The highest exposure in this mouse study is 4.6 times greater than the highest clinical dose of Isomil (Sodium Chloride) nitrite that would be used to treat cyanide poisoning (based on a body surface area comparison).

13.2 Animal Pharmacology

Due to the extreme toxicity of cyanide, experimental evaluation of treatment efficacy has predominantly been completed in animal models. The efficacy of Isomil (Sodium Chloride) thiosulfate treatment alone to counteract the toxicity of cyanide was initially reported in 1895 by Lang. The efficacy of amyl nitrite treatment in cyanide poisoning of the dog model was first reported in 1888 by Pedigo. Further studies in the dog model, which demonstrated the utility of Isomil (Sodium Chloride) nitrite as a therapeutic intervention, were reported in 1929 by Mladoveanu and Gheorghiu. However, Hugs and Chen et al. independently reported upon the superior efficacy of the combination of Isomil (Sodium Chloride) nitrite and Isomil (Sodium Chloride) thiosulfate in 1932-1933. Treatment consisted of intravenously administered 22.5 mg/kg (half the lethal dose) Isomil (Sodium Chloride) nitrite or 1 g/kg Isomil (Sodium Chloride) thiosulfate alone or in sequence immediately after subcutaneous injection of Isomil (Sodium Chloride) cyanide into dogs over a range of doses. Subsequent doses of 10 mg/kg Isomil (Sodium Chloride) nitrite and/or 0.5 g/kg Isomil (Sodium Chloride) thiosulfate were administered when clinical signs or symptoms of poisoning persisted or reappeared. Either therapy administered alone increased the dose of Isomil (Sodium Chloride) cyanide required to cause death, and when administered together, Isomil (Sodium Chloride) nitrite and Isomil (Sodium Chloride) thiosulfate resulted in a synergistic effect in raising the lethal dose of Isomil (Sodium Chloride) cyanide. The combined therapy appeared to have reduced efficacy when therapy was delayed until signs of poisoning (e.g. convulsions) appeared; however, other investigators have reported survival in dogs that were administered antidotal treatment after respiratory arrest had occurred.

Animal studies conducted in other species (e.g., rat, guinea pig, sheep, pigeon and cat) have also supported a synergistic effect of intravenous Isomil (Sodium Chloride) nitrite and Isomil (Sodium Chloride) thiosulfate in the treatment of cyanide poisoning.

While intravenous injection of Isomil (Sodium Chloride) nitrite and Isomil (Sodium Chloride) thiosulfate was effective in reversing the effects of lethal doses of cyanide in dogs, intramuscular injection of Isomil (Sodium Chloride) nitrite, with or without Isomil (Sodium Chloride) thiosulfate, was found not to be effective in the same setting.

14 CLINICAL STUDIES

The human data supporting the use of Isomil (Sodium Chloride) nitrite for cyanide poisoning consists primarily of published case reports. There are no randomized controlled clinical trials. Nearly all the human data describing the use of Isomil (Sodium Chloride) thiosulfate report its use in conjunction with Isomil (Sodium Chloride) nitrite. Dosing recommendations for humans have been based on theoretical calculations of antidote detoxifying potential, extrapolation from animal experiments, and a small number of human case reports.

There have been no human studies to prospectively and systematically evaluate the safety of Isomil (Sodium Chloride) nitrite in humans. Available human safety information is based largely on anecdotal case reports and case series of limited scope.

16 HOW SUPPLIED/STORAGE AND HANDLING

Each Isomil (Sodium Chloride) Nitrite carton (NDC 60267-311-10) consists of the following:

• One 10 mL glass vial of Isomil (Sodium Chloride) nitrite injection 30 mg/mL (containing 300 mg of Isomil (Sodium Chloride) nitrite);

Storage

Store at controlled room temperature between 20°C and 25°C (68°F to 77°F); excursions permitted from 15 to 30°C (59 to 86°F). Protect from direct light. Do not freeze.

(Note: Isomil (Sodium Chloride) Thiosulfate must be obtained separately.)

17 PATIENT COUNSELING INFORMATION

Isomil Nitrite Injection is indicated for acute cyanide poisoning that is judged to be life-threatening and in this setting, patients will likely be unresponsive or may have difficulty in comprehending counseling information.

17.1 Hypotension and Methemoglobin Formation

When feasible, patients should be informed of the possibility of life-threatening hypotension and methemoglobin formation.

17.2 Monitoring

Where feasible, patients should be informed of the need for close monitoring of blood pressure and oxygenation.

Manufactured by Cangene BioPharma, Inc., Baltimore, Maryland 21230 for

Hope Pharmaceuticals, Scottsdale, Arizona 85260

PRINCIPAL DISPLAY PANEL - 10 mL Vial Carton

NDC 60267-311-10

Rx Only

Isomil (Sodium Chloride) Nitrite

Injection, USP

300 mg/10 mL

(30 mg/mL)

FOR INTRAVENOUS USE

SINGLE USE ONLY

Any unused portion of a vial

should be discarded.

Use with

Isomil (Sodium Chloride) Thiosulfate

for Treatment of

Cyanide Poisoning

Manufactured by

CANGENE bioPharma, Inc.

Baltimore, MD for

HOPE

PHARMACEUTICALS®

Scottsdale, AZ 85260 U.S.A.

PRINCIPAL DISPLAY PANEL - 10 mL Vial Carton

Soybean Oil:

• Warnings
• Description
• Clinical pharmacology
• Indications and usage
• Contraindications
• Warnings
• Precautions
• Adverse reactions
• Overdose section
• Dosage and administration
• How supplied
• Storage and handling
• Limited warranty
• References
• Isomil (Soybean Oil) reviews

WARNINGS

This product is intended for use only by licensed medical personnel experienced in administering allergenic extracts and trained to provide immediate emergency treatment in the event of a life-threatening reaction. Allergenic extracts may potentially elicit a severe life-threatening systemic reaction, rarely resulting in death.1

Therefore, emergency measures and personnel trained in their use must be available immediately in the event of such a reaction.

Patients should be instructed to recognize adverse reaction symptoms, be observed in the office for at least 30 minutes after skin testing or treatment, and be cautioned to contact the physician's office if symptoms occur. See ADVERSE REACTION section of this package insert regarding adverse event reporting.

Standardized glycerinated extracts may be more potent than regular extracts and therefore are not directly interchangeable with non-standardized extracts, or other manufacturers' products.

Patients with cardiovascular diseases and/or pulmonary diseases such as symptomatic unstable, steroid dependent asthma, and/or those who are receiving cardiovascular drugs such as beta blockers, may be at higher risk for severe adverse reactions. These patients may also be more refractory to the normal allergy treatment regimen. Patients should be treated only if the benefit of treatment outweighs the risks.1

Patients on beta blockers may be more reactive to allergens given for testing or treatment and may be unresponsive to the usual doses of epinephrine used to treat allergic reactions. 2

This product should never be injected intravenously.

Refer to the WARNINGS, PRECAUTIONS, ADVERSE REACTIONS and OVERDOSE Sections for further discussion.

DESCRIPTION

The allergenic extract in this vial is referred to as a "bulk" extract or stock concentrate since it is designed primarily for the physician equipped to prepare dilutions and mixtures as required. The extract is sterile and intended for subcutaneous injection for immunotherapy and scratch, prick or puncture for diagnosis. Unless specified otherwise, the concentration of extract supplied will in most cases be expressed in weight to volume (e.g., 1:10 or 1:20 w/v) and will be the strongest available. Where mixtures of pollens and non-pollens have been ordered, the mixed extract will be treated as a pollen mixture. To insure maximum potency for the entire dating period, all bulk concentrates will contain 50% volume to volume (v/v) glycerin unless otherwise requested. Dilutions will also be prepared with 50% (v/v) glycerin unless another diluent is specified.

Source materials utilized in allergenic extract products include pollens, molds, animal epidermals, insects, foods and environmental materials.

Pollens are collected using techniques such as waterset or vacuuming, cleaned and purified to greater than 99% single specie pollen (less than 1% foreign particle presence).

Molds are typically grown on synthetic nutrient medias and are derived from the surface growth (mycelia).

Animal source materials are collected from animals deemed to be healthy at the time of collection by a veterinarian or individual trained and certified by a veterinarian. Epidermals include feathers, hair and dander, or the whole epidermal (pelt) as described on product labeling.

Regular process epidermals are extractions of the source material without additional processing, except that certain materials are defatted. AP (acetone precipitated) epidermal source materials are derived from the precipitate formed when acetone is added to an aqueous extract. The resulting precipitate is dried, and becomes the source material for the AP product.

Insects are collected in whole body form. Extractions take place as whole body or ground insects.

Information on Foods and other Environmental source materials can be obtained by contacting our Customer Service Department.

The following is a brief summary of the six methods of describing allergenic product concentration.

1. Weight to volume (w/v). Weight to volume (w/v) describes the weight of allergenic source material added to a given volume of extracting fluid. A 1:10 w/v extract, e.g., indicates that the solution contains the extractable material from one gram of raw material added to each 10 mL Glycero-Coca's or 10 mL Coca's extracting fluid. The amount and composition of extracted materials will vary with the type of antigen, the extracting fluid, duration of extraction, pH, temperature, and other variables. Pollens are typically extracted at a 1:20 w/v ratio in Glycero-Coca's while Coca's extracts are 1:10 w/v. Epidermal, environmental, regular molds and insect products are typically extracted at 1:10 w/v. AP (acetone precipitated) epidermal products are prepared at a 1:50 w/v concentration (i.e., 1 gram of dried precipitate in 50 mL of reconstitution fluid). AP Dog Hair-Dander is prepared at 1:100 w/v concentration. (i.e., 1 gram of dried precipitate in 100 mL of reconstitution fluid.)

2. Protein Nitrogen Units per mL (PNU/mL). One protein nitrogen unit represents 0.00001 mg phosphotungstic acid precipitable protein nitrogen dissolved in one mL of antigen extract. The PNU content of extracts of the same antigen may vary according to the method of measuring the PNU. Thus, the PNU content of extracts from different manufacturers is not comparable unless the PNU method is known to be the same and is reproducible from lot to lot. The amount of protein nitrogen extracted from the source material is influenced by such factors as the type of antigen, the extracting fluid, duration of extraction, pH, temperature and other variables. Allergenic materials make up a variable proportion of the total protein of an extract. Most allergenic extracts are assayed for PNU. Specific PNU information is available upon request.

3. Amb a 1. Of the many allergens from Short Ragweed which have been purified and characterized [Amb a 1 3 (also known as Antigen E), Amb a 2 3 (also known as Antigen K), Ra3 4, Ra4 (BPA-R) 5, Ra5 6, Ra6, Ra7, Ra87, and cytochrome C 8], Amb a 1 is considered the most important and has been selected as the basis for standardization. Extracts of Short Ragweed containing Amb a 1 are diffused in agar against standard anti-serum to Amb a 1, and compared to the diffusion of standard Amb a 1 solutions. The amount of Amb a 1 is expressed as units of Amb a 1 per mL of extract. A Short Ragweed pollen extracted at 1:20 (w/v) usually assays within a range of 50,000 to 70,000 PNU/mL and 100 to 300 units of Amb a 1 per mL.

The Amb a 1 concentration of any Short Ragweed extract which is diluted with a diluent or other allergenic extracts is determined by calculation. The resulting Amb a 1 value does not reflect the total potency of the product if Short Ragweed extract is mixed with another allergenic extract.

4. Allergy Units per mL (AU/mL). The potency of extracts labeled in Allergy Units (AU)/mL is determined by in vitro comparison to a reference standard established by the Center for Biologics Evaluation and Research (CBER) of the Food and Drug Administration (FDA).

5. Bioequivalent Allergy Units per mL (BAU/mL). Other standardized allergenic extracts are labeled in Bioequivalent Allergy Units/mL (BAU/mL) based on their comparison (by in vitro assay or major allergen content) to CBER, FDA Reference Preparations. The FDA reference extracts have been assigned Bioequivalent Allergy Units based on the CBER ID₅₀EAL method.9 Briefly, highly sensitive patients are skin tested to the reference preparation using an intradermal technique employing 3-fold extract dilutions. Depending on the dilution which elicits a summation of erythema diameter of 50, Bioequivalent Allergy Units are assigned as follows:

BAU/mL	D50 Range
100,000	13.9 - 15.9
10,000	10.9 - 12.9
1,000	8.8 - 10.8
100	6.7 - 8.7

References labeled 10,000 BAU/mL can be diluted one to a half million fold, and references labeled 100,000 BAU/mL can be diluted one to 5 million fold and produce a sum of erythema diameter of 50 mm when Intradermal testing highly reactive subjects.

6. Concentrate. Concentrate label terminology applies to allergenic extract mixtures, where the individual allergens being combined vary in strength or the designation of strength.

e.g. Concentrate

50% Short Ragweed 1:20 w/v

25% Std. Cat Pelt 10,000 BAU/mL

25% Mite D. farinae 10,000 AU/mL

Should the physician choose to calculate the actual strength of each component in the "Concentrate" mixture, the following formulation may be used:

Actual Allergen Strength in Concentrate	=	Allergen Manufacturing Strength	X	% Allergen in Formulation (by volume or parts)

Ingredients: Active ingredients are the allergen(s) noted on the vial label. Preservative is 50% (v/v) glycerin, or 0.4% phenol, as indicated on the vial label. Additional ingredients are 0.5% sodium chloride, and 0.275% sodium bicarbonate.

CLINICAL PHARMACOLOGY

The mechanism by which hyposensitization is achieved is not known completely. It has been shown that repeated injections of appropriate allergenic extracts will ameliorate the intensity of allergic symptoms upon contact with the allergen.11, 12, 13, 14 Clinical studies which address the efficacy of immunotherapy are available. The allergens which have been studied are cat, mite, and some pollen extracts.10, 15, 16, 17, 18, 19

IgE antibodies bound to receptors on mast cell membranes are required for the allergic reaction, and their level is probably related to serum IgE concentrations. Immunotherapy has been associated with decreased levels of IgE, and also with increases in allergen specific IgG "blocking" antibody.

The histamine release response of circulating basophils to a specific allergen is reduced in some patients by immunotherapy, but the mechanism of this change is not clear.

Further study and clarification of the relationships among changes in blocking antibody, reaginic antibody, and mediator-releasing cells, and between these three factors and successful immunotherapy, is needed.

INDICATIONS AND USAGE

20,21,22,23

Allergenic extracts are indicated for use in diagnosis and immunotherapy of patients presenting symptoms of allergy (hay fever, rhinitis, etc.) to specific environmental allergens. The selection of allergenic extracts to be used should be based on a thorough and carefully taken history of hypersensitivity, and confirmed by skin testing.

The use of mixed or unrelated antigens for skin testing is not recommended since, in the case of a positive reaction, it does not indicate which component of the mix is responsible for the reaction, while, in the case of a negative reaction, it fails to indicate whether the individual antigens at full concentration would give a positive reaction. Utilization of such mixes for compounding a treatment may result, in the former case, in administering unnecessary antigens and, in the latter case, in the omission of a needed antigen.

Avoidance of allergens is to be advocated if possible, but cannot always be attained, e.g., allergy to dog dander in kennel owners and employees, dog breeders, research workers, veterinarians, etc.

Allergens to which a patient is extremely sensitive should not be included in treatment mixes with allergens to which there is much less sensitivity, but should be administered separately. This allows individualized and better control of dosage increases, including adjustments in dosage becoming necessary after severe reactions which may occur with the highly reactive allergen.

CONTRAINDICATIONS

There are no known absolute contraindications to immunotherapy. See PRECAUTIONS and WARNINGS.

Patients with cardiovascular diseases and/or pulmonary diseases such as symptomatic unstable, steroid-dependent asthma, and/or those who are receiving cardiovascular drugs such as beta blockers, may be at higher risk for severe adverse reactions. These patients may also be more refractory to the normal allergy treatment regimen. Patients should be treated only if the benefit of treatment outweighs the risks.1

Treat patients only with allergens to which they are allergic by skin test reaction, have a history of symptoms on exposure, and are likely to be exposed to again.

Any injections, including immunotherapy, should be avoided in patients with a bleeding tendency. Patients on beta blockers may be more reactive to allergens given for testing or treatment and may be unresponsive to the usual doses of epinephrine used to treat systemic reactions.2

Since there are differences of opinion concerning the possibility of routine immunizations exacerbating autoimmune diseases, immunotherapy should be given cautiously to patients with other immunologic diseases and only if the risk from exposure is greater than the risk of exacerbating the underlying disorder.

WARNINGS

Allergenic extracts must be temporarily withheld from patients or the dose adjusted downward if any of the following conditions exist: (1) severe symptoms of rhinitis and/or asthma; (2) infection or flu accompanied by fever; (3) any evidence of an excessively large local or any generalized reaction during the initial stages of immunotherapy or during maintenance therapy, and/or (4) exposure to excessive amounts of clinically relevant allergen prior to a scheduled injection. Do not administer immunotherapy during a period of symptoms due to exposure. Since the individual components of the extract are those to which the patient is allergic, and to which s/he will be exposed, typical allergic symptoms may follow shortly after the injection, particularly when the antigen load from exposure plus the injected antigen exceeds the patient's antigen tolerance.

THE CONCENTRATE MUST NOT BE INJECTED AT ANY TIME UNLESS TOLERANCE HAS BEEN ESTABLISHED. DILUTE CONCENTRATED EXTRACTS WITH STERILE DILUENT FOR SKIN TESTING AND IMMUNOTHERAPY.

INJECTIONS MUST NEVER BE GIVEN INTRAVENOUSLY. Subcutaneous injection is recommended. Intracutaneous or intramuscular injection may produce large local reactions or be excessively painful.

AFTER INSERTING NEEDLE SUBCUTANEOUSLY, BUT BEFORE INJECTING, ALWAYS WITHDRAW THE PLUNGER SLIGHTLY. IF BLOOD APPEARS IN THE SYRINGE, CHANGE NEEDLE AND GIVE THE INJECTION IN ANOTHER SITE.

IF CHANGING TO A DIFFERENT LOT OF EXTRACT: All extracts lose potency over time, and a fresh extract could have an effective potency that is substantially greater than that of the old extract. Even though it is the same formula and concentration, the first dose from the new vial should not exceed 50% of the previous dose.

IF THE EXTRACT PREVIOUSLY USED WAS FROM ANOTHER MANUFACTURER: Since manufacturing processes and sources of raw materials differ among manufacturers, the interchangeability of extracts from different manufacturers cannot be insured. The starting dose of the extract therefore should be greatly decreased even though the extract is the same formula and dilution. In general, a dose reduction to 50% of the previous product dose should be adequate, but each situation must be evaluated separately considering the patient's history of sensitivity, tolerance of previous injections, and other factors. If the patient tolerates a 50% decrease, the next dose could be raised to the previous dose amount. If the decrease is greater than 50%, the next dose would need to be determined by the allergist, depending on the situation. Dose intervals should not exceed one week when rebuilding dose. See DOSAGE AND ADMINISTRATION.

IF A PROLONGED PERIOD OF TIME HAS ELAPSED SINCE THE LAST INJECTION: Patients may lose tolerance for allergen injections during prolonged periods between doses. The duration of tolerance is an individual characteristic and varies from patient to patient. In general, the longer the lapse in the injection schedule, the greater dose reduction required. If the interval since last dose is over four weeks, perform skin tests to determine starting dose. See DOSAGE AND ADMINISTRATION.

IF THE PREVIOUS EXTRACT WAS OUTDATED: The dating period for allergenic extracts indicates the time that they can be expected to remain potent under refrigerated storage conditions (2° - 8°C). During the storage of extracts, even under ideal conditions, some loss of potency occurs. For this reason, extracts should not be used beyond their expiration date. If a patient has been receiving injections of an outdated extract, s/he may experience excessive local or systemic reactions when changed to a new and possibly more potent extract. In general, the longer the material has been outdated, the greater the dose reduction necessary for the fresh extract.

IF CHANGING FROM ALUM-ADSORBED TO AQUEOUS OR GLYCERINATED EXTRACTS: When the patient was previously receiving alum-adsorbed or alum-precipitated extract, the safest course is to start over as though the patient had not been receiving immunotherapy. See DOSAGE AND ADMINISTRATION and ADVERSE REACTIONS.

IF ANY OTHER CHANGES HAVE BEEN MADE IN THE EXTRACT CONCENTRATE FORMULA: Changes other than those listed above may include situations such as a redistribution of component parts or percentages, a difference in extracting fluid (i.e., change from non-glycerin extracts to 50% glycerin extracts), combining two or more stock concentrates, or any other change. It should be recognized that any change in formula can affect a patient's tolerance of the treatment. The usual 1/2 of the previous dose for a new extract may produce an adverse reaction; extra dilutions are recommended whenever starting a revised formula. The greater the change, the greater the number of dilutions required.

Proper selection of the dose and careful injection should prevent most systemic reactions. It must be remembered that allergenic extracts are highly potent in sensitive individuals, and that systemic reactions of varying degrees of severity may occur, including urticaria, rhinitis, conjunctivitis, wheezing, coughing, angioedema, hypotension, bradycardia, pallor, laryngeal edema, fainting, or even anaphylactic shock and death, as described under ADVERSE REACTIONS. Patients should be informed of this, and the precautions should be discussed prior to immunotherapy. Severe systemic reactions should be treated as indicated in ADVERSE REACTIONS. Refer to WARNINGS box.

PRECAUTIONS

1. General

The presence of asthmatic signs and symptoms appear to be an indicator for severe reactions following allergy injections. An assessment of airway obstruction either by measurement of peak flow or an alternate procedure may provide a useful indicator as to the advisability of administering an allergy injection.1, 24, 25, 26, 27

Concentrated extracts must not be injected unless tolerance has been established. Concentrated extracts must be diluted prior to use: See DOSAGE and ADMINISTRATION for detailed instructions on the dilution of allergenic extracts.

Any evidence of a local or generalized reaction requires a reduction in dosage during the initial stages of immunotherapy, as well as during maintenance therapy.

Allergenic extracts diluted with sterile Albumin Saline with Phenol may be more potent than extracts diluted with diluents which do not contain stabilizers. When switching from non-stabilized to stabilized diluent, consider weaker initial dilutions for both intradermal testing and immunotherapy.

Sterile solutions, vials, syringes, etc. should be used and aseptic precautions observed in making dilutions.

To avoid cross-contamination, do not use the same needle to withdraw materials from vials of more than one extract, or extract followed by diluent.

A sterile tuberculin syringe graduated in 0.01 mL units and with a needle at least 5/8" long should be used to measure each dose from the appropriate dilution.

Aseptic techniques should always be employed when injections of allergenic extracts are being administered. A separate sterile syringe should be used for each patient to prevent transmission of hepatitis and other infectious agents from one person to another.

Patient reactions to previous injections should be reviewed before each new injection, so that dosage can be adjusted accordingly. See ADVERSE REACTIONS and WARNINGS.

Rarely, a patient is encountered who develops systemic reactions to minute doses of allergen and does not demonstrate increasing tolerance to injections after several months of treatment. If systemic reactions or excessive local responses occur persistently at very small doses, efforts at immunotherapy should be stopped.

PATIENTS SHOULD BE OBSERVED IN THE OFFICE FOR AT LEAST 30 MINUTES AFTER SKIN TESTING AND EACH TREATMENT INJECTION. Most severe reactions will occur within this time period, and rapid treatment measures should be instituted. See ADVERSE REACTIONS for such treatment measures.

In order to avoid darkening and possible precipitation, do not dilute the following extracts with solutions containing phenol: Privet pollen and food extracts of White Potato, Corn, Oat, Rye, and Wheat. Injections of such extracts discolored by reaction with phenol may produce a lasting tattoo-like discoloration of the skin.

2. Information for Patients

Patients should be instructed in the recognition of adverse reactions to immunotherapy, and in particular, to the symptoms of shock. Patients should be made to understand the importance of a 30 minute observation period, and be cautioned to return to the office promptly if symptoms occur after leaving. Patients should be instructed to report any symptoms of exposure to the allergen, so the physician can adjust the dosage appropriately.

3. Drug Interactions

Patientswith cardiovascular diseases and/or pulmonary diseases such assymptomatic unstable, steroid-dependent asthma, and/or those who arereceiving cardiovascular drugs such as beta blockers, may be at higherrisk for severe adverse reactions. These patients may also be morerefractory to the normal allergy treatment regimen. Patients should betreated only if the benefit of treatment outweighs the risks.1

Patientson beta blockers may be more reactive to allergens given for testing ortreatment and may be unresponsive to the usual doses of epinephrineused to treat allergic reactions.2. Certain medications may lessen the skin test wheal anderythema responses elicited by allergens and histamine for varying timeperiods. Conventional antihistamines should be discontinued at least 5days before skin testing. Long acting antihistamines should bediscontinued for at least 3 weeks prior to skin testing. 28 Topical steroids should be discontinued at the skin test site for at least 2-3 weeks before skin testing.28, 29

Tricyclic antidepressants such as Doxepin should be withheld for at least 7 days before skin testing. 30 Topical local anesthetics may suppress the flare responses and should be avoided in skin test sites.31

4. Carcinogenesis, Mutagenesis, Impairment of Fertility

Long-term studies in animals have not been conducted with allergenic extracts to determine their potential for carcinogenicity, mutagenicity or impairment of fertility.

5. Pregnancy

Pregnancy Category C. Animal reproduction studies have not been conducted with allergenic extracts. It is also not known whether allergenic extracts can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Allergenic extracts should be given to a pregnant woman only if clearly needed. The physician must carefully consider the benefit-to-risk ratio to both patient and fetus, of performing skin testing or continuing immunotherapy during pregnancy. The recommended precautions for preventing adverse reactions are especially important in the pregnant patient. Based on the physician's discretion, immunotherapy maintenance doses may be continued during pregnancy if the patient has not experienced adverse side effects. Immunotherapy is generally not initiated during pregnancy due to the risks associated with systemic reactions and their treatment. 33

6. Nursing Mothers

There are no current studies on the secretion of allergenic extract components in human milk or their effect on the nursing infant. Because many drugs are excreted in human milk, caution should be exercised when allergenic extracts are administered to a nursing woman.

7. Pediatric Use

Since dosage for the pediatric population is the same as for adults 34, 35 larger volumes of solution may produce excessive discomfort. Therefore, in order to achieve the total dose required, the volume of the dose may need to be divided into more than one injection per visit.

8. Geriatric Use

The reactions from immunotherapy can be expected to be the same in elderly patients as in younger ones. Elderly patients may be more likely to be on medication that could block the effect of epinephrine which could be used to treat serious reactions, or they could be more sensitive to the cardiovascular side effect of epinephrine because of pre-existing cardiovascular disease. 36

ADVERSE REACTIONS

Physicians administering allergenic extract testing or treatment materials should be experienced in the treatment of severe systemic reactions. See WARNINGS box at the beginning of this package insert.

1. Local Reactions

Some erythema, swelling or pruritus at the site of injection are common, the extent varying with the patient. Such reactions should not be considered significant unless they persist for at least 24 hours. Local reactions (erythema or swelling) which exceed 4-5 cm in diameter are not only uncomfortable, but also indicate the possibility of a systemic reaction if dosage is increased. In such cases the dosage should be reduced to the last level not causing the reaction and maintained at this level for two or three treatments before cautiously increasing again. Large persistent local reactions may be treated by local cold, wet dressings and/or the use of oral antihistamines. They should be considered a warning of possible severe systemic reactions and an indication of the need for temporarily reduced dosages. A mild burning immediately after the injection is to be expected. This usually subsides in 10 to 20 seconds.

2. Systemic Reactions

With careful attention to dosage and administration, systemic reactions occur infrequently, but it cannot be overemphasized that in sensitive individuals, any injection could result in anaphylactic shock. Therefore, it is imperative that physicians administering allergenic extracts understand and be prepared for the treatment of severe reactions.

Most severe systemic reactions will begin within a 30 minute time period, but systemic reactions may occur at any time after skin tests or immunotherapy. Symptoms may range from mild to life-threatening (due to anaphylaxis)as described below.

Other possible systemic reactions which may occur in varying degrees of severity are laryngeal edema, fainting, pallor, bradycardia, hypotension, angioedema, cough, wheezing, conjunctivitis, rhinitis, and urticaria. Adverse reaction frequency data for allergenic extract administration for testing and treatment show that risk is low. 1, 37

If a systemic or anaphylactic reaction does occur, apply a tourniquet above the site of injection and inject 1:1,000 epinephrine-hydrochloride intramuscularly or subcutaneously into the opposite arm. Loosen the tourniquet at least every 10 minutes. Do not obstruct arterial blood flow with the tourniquet.

EPINEPHRINE

Dosage:

ADULT: 0.3 to 0.5 mL should be injected. Repeat in 5 to 10 minutes if necessary.

PEDIATRIC: The usual initial dose is 0.01 mg (mL) per kg body weight or 0.3 mg (mL) per square meter of body surface area. Suggested dosage for infants to 2 years of age is 0.05 mL to 0.1 mL; for children 2 to 6 years, 0.15 mL; and children 6 to 12 years, 0.2 mL. Single pediatric doses should not exceed 0.3 mg (mL). Doses may be repeated as frequently as every 20 minutes, depending on the severity of the condition and the response of the patient. After administration of epinephrine, profound shock or vasomotor collapse should be treated with intravenous fluids, and possibly vasoactive drugs. Airway patency should be insured. Oxygen should be given by mask. Intravenous antihistamine, inhaled bronchodilators, theophylline and/or adrenal corticosteroids may be used if necessary after adequate epinephrine and circulatory support has been given. Emergency resuscitation measures and personnel trained in their use must be available immediately in the event of a serious systemic or anaphylactic reaction not responsive to the above measures [Ref. J. Allergy and Clinical Immunology, 77(2):p. 271-273, 1986].

Rarely are all of the above measures necessary; the tourniquet and epinephrine usually produce prompt responses. However, the physician should be prepared in advance for all contingencies. Promptness in beginning emergency treatment measures is of utmost importance.

Severe systemic reactions mandate a decrease of at least 50% in the next dose, followed by cautious increases. Repeated systemic reactions, even of a mild nature, are sufficient reason for the cessation of further attempts to increase the reaction-causing dose.

3. Adverse Event Reporting

Report all adverse events to Jubilant HollisterStier LLC, Customer Technical Services Department at 1 (800) 992-1120. A voluntary adverse event reporting system for health professionals is available through the FDA MEDWATCH program. Preprinted forms (FDA Form 3500) are available from the FDA by calling 1 (800) FDA-1088. Completed forms should be mailed to MEDWATCH, 5600 Fisher Lane, Rockville, MD 20852-9787 or Fax to: 1 (800) FDA-0178.

OVERDOSE SECTION

See ADVERSE REACTIONS.

DOSAGE AND ADMINISTRATION

1. General

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit.

Dosage of allergenic extracts is a highly individualized matter and varies according to the degree of sensitivity of the patient, his clinical response, and tolerance to the extract administered during the early phases of an injection regimen.

Allergen extracts should be administered using a sterile syringe with 0.01 mL gradations and a 25-27 gauge x 1/2" to 5/8" needle. The injections are given subcutaneously. The most common sites of injection are the lateral aspect of the upper arm or thigh. Intracutaneous or intramuscular injections may produce large local reactions and may be very painful.

Sterile aqueous diluent containing human serum albumin [Albumin Saline with Phenol ] or diluent of 50% glycerin may be used when preparing dilutions of the concentrate for immunotherapy. Dilutions should be made accurately and aseptically, using sterile diluent, vials, syringes, etc. Mix thoroughly and gently by rocking or swirling. Maintain stock solutions and dilutions constantly at 2° - 8°C. To prepare dilutions for intradermal and therapeutic use, make a 1:10 dilution by adding 1.0 mL of the Concentrate to 9.0 mL of sterile aqueous diluent. Subsequent serial dilutions are made in a similar manner.

Following is a suggested schedule for average patients and will be satisfactory in most cases. However, the degree of sensitivity varies in many patients. The size of the dose should be adjusted according to the patient's tolerance and reaction. Decrease the size of the dose if the previous injection resulted in marked local or the slightest general reaction. Another dose should never be given until all reactions resulting from the previous dose have disappeared.

The starting dose should be based on skin tests of the extract to be used for immunotherapy. To determine the starting dose, begin intradermal testing with the most dilute extract preparation. Inject 0.02 mL and read the reaction after 15 minutes. Intradermal testing is continued with increasing concentrations of the extract until a reaction of 10-20 mm erythema ( ∑ E 0-40 mm) and/or a 5 mm wheal occurs. This concentration at a dose of 0.03 mL then can serve as a starting dose for immunotherapy. Subsequent doses can be increased by 0.03 mL to as high as 0.12 mL increments each time until 0.3 mL is reached, at which time a dilution 10 times as strong can be used, starting with 0.03 mL. Proceed in this way until a tolerance dose is reached or symptoms are controlled. Suggested maintenance dose for a pollen extract is 0.2 mL of the Concentrate, while for a non-pollen extract the maximum suggested dose is 0.5 mL of the Concentrate. Occasionally, higher doses are necessary to relieve symptoms. Special caution is required in administering doses greater than 0.2 mL. The interval between doses is normally 3 to 7 days during dose building regimen.

Normally immunotherapy can be started with a 1:100,000 dilution of extracts labeled in weight/volume. Certain therapeutic mixtures are labeled as Concentrate, (v/v) dilutions of Concentrate, Amb a 1, Allergy units/mL or Bioequivalent Allergy Units/mL. (See DESCRIPTION.) Strength of each antigen in the mixture is indicated in the product labeling. For beginning treatment, use at least a 1,000-fold dilution of the Concentrate extract for non-pollens, and at least a 10,000-fold dilution of the Concentrate extract for pollens.

In some patients, the dosage may be increased more rapidly than recommended above. In seasonal allergies, treatment should be started and the interval between doses regulated so that at least the first twenty doses will have been administered by the time symptoms are expected. Thus, the shorter the interval between the start of immunotherapy and the expected onset of symptoms, the shorter the interval between each dose. Some patients may even tolerate daily doses.

Should symptoms develop before the next injection is scheduled, the interval between doses should be decreased. Should allergic symptoms or local reactions develop shortly after the dose is administered, the size of the dose should be decreased. In seasonal allergies, it is often advisable to decrease the dose to one-half or one-quarter of the maximum dose previously attained if the patient has any seasonal symptoms.

A maintenance dose, the largest dose tolerated by the patient that relieves symptoms without producing undesirable local or general reactions, is recommended for most patients. The upper limits of dosage have not been established; however, doses larger than 0.2 mL of extract may be painful if glycerin is present. The dosage of allergenic extract does not vary significantly with the respiratory allergic disease under treatment. The size of this dose and the interval between doses will vary and can be adjusted as necessary.

The interval between maintenance doses can be increased gradually from one week to 10 days, to two weeks, to three weeks, or even to four weeks, if tolerated. Repeat the doses at a given interval three or four times to check for untoward reactions before further increasing the interval. Protection is lost rapidly if the interval between doses is more than four weeks. (See WARNINGS.)

The usual duration of treatment has not been established. A period of two or three years of injection therapy constitutes an average minimum course of treatment.

2. Pediatric Use

The dose for the pediatric population is the same as for adults.

3. Geriatric Use

The dose for elderly patients is the same as for adult patients under 65.36

HOW SUPPLIED

In 10 mL, 30 mL and 50 mL vials at the w/v, Concentrate, v/v dilution of Concentrate, AU/mL (Standardized Mite Extracts: D. farinae, D. pteronyssinus 10,000 and 30,000 AU/mL; Mite Mixtures: 5,000 AU/mL each species, or 15,000 AU/mL each species), BAU/mL (Standardized Cat Hair and Cat Pelt extracts: 10,000 BAU/mL; Standardized Grass extracts: 10,000 and 100,000 BAU/mL); Amb a 1 units/mL; or PNU/mL ordered by the physician. Please see the current Allergy Product Catalog.

STORAGE AND HANDLING

The expiration date is listed on the container label. To ensure the maximum potency, the extract and its dilutions should be stored at 2° - 8°C, and kept in this temperature range at all times, even during use. Dilutions are less stable than concentrates. If loss of potency is suspected, dilutions should be checked by skin testing with equal v/v dilutions of a freshly prepared dilution on individuals known to be allergic to the specific allergen.

LIMITED WARRANTY

A number of factors beyond our control could reduce the efficacy of this product or even result in an ill effect following its use. These include storage and handling of the product after it leaves our hands, diagnosis, dosage, method of administration and biological differences in individual patients. Because of these factors, it is important that this product be stored properly and that the directions be followed carefully during use. No warranty, express or implied, including any warranty of merchantability or fitness, is made. Representatives of the Company are not authorized to vary the terms or the contents of any printed labeling, including the package insert, for this product except by printed notice from the Company's headquarters. The prescriber and user of this product must accept the terms hereof.

REFERENCES

1. Lockey, R.F., L.M. Benedict, P.C. Turkletaub, S.C. Bukantz. Fatalities from immunotherapy (IT) and skin testing (ST). J. Allergy Clin. Immunol., 79 (4): 660-677, 1987.

2. Jacobs, R.L., G.W. Rake, Jr., et al. Potentiated anaphylaxis in patients with drug-induced beta-adrenergic blockade. J. Allergy Clin. Immunol., 68 (2): 125-127, August 1981.

3. Griffith, I.J., J. Pollock, D.G. Klapper, B.L. Rogers and A.K. Nault. Sequence Polymorphism of Amb a I and Amb a II, the Major Allergens in Ambrosia artemisiifolia (Short Ragweed). Int. Arch. Allergy Apply. Immunol., 96: 296-304, 1991.

4. Underdown, B. J. and L. Goodfriend. Isolation and characterization of an allergen from short ragweed pollen. Biochem. 8 (3): 980-989, 1969.

5. Griffiths, B. W and R. Brunet. Isolation of a basic protein antigen of low ragweed pollen. Can. J. Biochem. 49 (3): 396-400, 1971.

6. Lapkoff, C. B. and L. Goodfriend. Isolation of a low molecular weight ragweed allergen: Ra5. Int. Arch. Allergy Appl. Immunol. 46 (2): 215-229, 1974.

7. Hussain, R. and D. G. March. Characterization and allergenic activity of ragweed allergens Ra6, Ra7, Ra8. J. Allergy Clin. Immunol. 65 (3): 230, abstr. 218, 1980

8. Goodfriend, L., A. M. Choudhury, J. Del Carpio and T. P. King. Cytochrome C: New ragweed pollen allergen. Fed. Proc. 38 (3, part II): 1415, abstr. 6261, 1979.

9. Turkeltaub, P.C., MD, and S.C. Rastogi, PhD. Quantitative intradermal test procedure for evaluation of subject sensitivity to standardized allergenic extracts and for assignment of bioequivalent allergy units to reference preparations using the ID₅₀EAL method. Allergenics Products Testing Laboratory, Center for Biologics Evaluation and Research (CBER), FDA. Revised: November, 1994.

10. Norman, P. S. Postgraduate Course Presentation. An overview of immunotherapy, implications for the future. J. Allergy Clin. Immunol., 65 (2): 87-96, 1980.

11. Lowell, F. C. and W. Franklin. A "double-blind" study of treatment with aqueous allergenic extracts in cases of allergic rhinitis. J. Allergy, 34 (2):165-182, 1963.

12. Lowell, F. C. and W. Franklin. A double-blind study of the effectiveness and specificity of injection therapy in ragweed hay fever. N. Eng. J. Med. 273 (13): 675-679, 1965.

13. Zavazal, V. and A. Stajner. Immunologic changes during specific treatment of the atopic state. II. Acta. Allergol. 25 (1): 11-17, 1970.

14. Reisman, R. E., J. I. Wypych, and E. E. Arbesman. Relationship of immunotherapy, seasonal pollen exposure and clinical response to serum concentrations of total IgE and ragweed-specific IgE. Int. Arch. Allergy Appl. Immunol. 48 (6): 721-730, 1975.

15. Taylor, W. W., J. L. Ohman, F. C. Lowell. Immunotherapy in cat-induced asthma; double-blind trial with evaluation of bronchial responses to cat allergen and histamine. J. Allergy Clin. Immunol., 61 (5): 283-287, 1978.

16. Smith, A. P. Hyposensitization with Dermatophagoides pteronyssinus antigen: Trial in asthma induced by house dust. Br. Med. J., 4: 204-206, 1971.

17. Chapman, M. D., T. A. E. Platts-Mills, M. Gabriel, H. K. Ng, W. G. L. Allen, L. E.Hill, A. J. Nunn. Antibody response following prolonged hyposensitization with Dermatophagoides pteronyssinus extract. Int. Arch. Allergy Appl. Immunol., 61:431-440, 1980.

18. Norman, P. S., W. L. Winkenwerder. Maintenance immunotherapy in ragweed hay fever. J. Allergy, 74: 273-282, 1971.

19. Norman, P. S., W. L. Winkenwerder, L. M. Lichtenstein. Immunotherapy of hay fever with ragweed Antigen E; comparisons with whole pollen extract and placebos. J. Allergy, 42: 93-108, 1968.

20. Middleton, E., C. E. Reed and E. F. Ellis, editors. Allergy Principles and Practice. C. V. Mosby Co., St. Louis, 1978, pp. 877-898.

21. Sheldon, J. M., R. G. Lovell and K. P. Mathews. A Manual of Clinical Allergy, Second Edition. W. B. Saunders. Philadelphia, 1967, pp. 107-112.

22. Sherman, W. B. Hypersensitivity Mechanisms and Management. W. B. Saunders. Philadelphia, 1968, pp. 169-172.

23. Swineford, O. Asthma and Hay Fever. Charles C. Thomas. Springfield, IL, 1971, pp. 148-155.

24. Reid, M.J., R.F. Lockey, P.C. Turkletaub, T.A.E., Platts-Mills. Survey of fatalities from skin testing and immunotherapy. J. 0 Clin. Immunol. 92 (1): 6-15, July 1993.

25. Reid, M.J., G. Gurka. Deaths associated with skin testing and immunotherapy. J. Allergy Clin. Immunol. 97(1) Part 3:231, Abstract 195, January 1996.

26. Thompson, R.A., et al, report of a WHO/IUIS working group. The current status of allergen immunotherapy (hyposensitization). Allergy. 44: 369-379, 1989.

27. Malling, H.J., B. Weeke, et al, The European Academy of Allergology and Clinical Immunology. Position Papers. Allergy. 48 (Supplement 14): 9-82, 1993.

28. Pipkorn, U. Pharmacological influence of anti-allergic medication on In Vivo allergen testing. Allergy. 43: 81-86,1988.

29. Andersson, M. and U. Pipkorn. Inhibition of the dermal immediate allergic reaction through prolonged treatment with topical glucocorticosteroids. J. Allergy Clin. Immunol. 79 (2): 345-349, February 1987.

30. Rao, K.S., et al. Duration of suppressive effect of tricyclic anti-depressants on histamine induced wheal and flare reactions on human skin. J. Allergy Clin. Immunol. 82: 752-757, November 1988.

31. Pipkorn, U., and M. Andersson. Topical dermal anesthesia inhibits the flare but not the wheal response to allergen and histamine in the skin prick test. Clinical Allergy. 17: 307-311, 1987.

32. DuBuske, L.M., C.J. Ling and A.L. Sheffer. Special problems regarding allergen immunotherapy. Immunol. Allergy Clin. North Am. (USA). 12(1): 145-175, 1992.

33. Li, J.T., R.F. Lockey, I.L. Bernstein, J.M. Ortnoy, R.A. Nicklas. Allergen Immunotherapy: A Practice Parameter. Ann. Allergy, Asthma and Immunotherapy 90 (1): 26, 2003.

34. Patterson, R., et al. Allergy Principles and Practice, 2nd ed. E. Middleton, Jr., C. E. Reed, E. F. Ellis, Ed., C. V. Mosby Co., 1983, St. Louis, MO, 1983, Chapter 52

35. Levy, D. A., L. M. Lichtenstein, E. O. Goldstein, and K. Ishizaka. Immunologic and cellular changes accompanying the therapy of pollen allergy. J. Clinical Investigation, 50:360, 1971.

36. Peebles, R.S., Jr., B. Bochner, Howard J. Zeitz, ed. Anaphylaxis in the elderly. Immunology and Allergy Clinics of North America. 13 (3): 627-646, August 1993.

37. Turkeltaub, P.C., MD, and P.J. Gergen, MD. The risk of adverse reactions from percutaneous prick-puncture allergen skin testing, venipuncture, and body measurements: Data from the second National Health and Nutrition Examination Survey 1976-80 (NHANES II). J. Allergy Clin. Immunol. 84(6): 886-890, Dec. 1989.

Vegetable Oils:

• Isomil (Vegetable Oils) reviews

This medication is used as a moisturizer to treat or prevent dry, rough, scaly, itchy skin and minor skin irritations (e.g., diaper rash, skin burns from radiation therapy). Emollients are substances that soften and moisturize the skin and decrease itching and flaking. Some products (e.g., zinc oxide, white petrolatum ) are used mostly to protect the skin against irritation (e.g., from wetness). Dry skin is caused by a loss of water in the upper layer of the skin. Emollients/moisturizers work by forming an oily layer on the top of the skin that traps water in the skin. Petrolatum, lanolin, mineral oil and dimethicone are common emollients. Humectants, including glycerin, lecithin, and propylene glycol, draw water into the outer layer of skin. Many products also have ingredients that soften the horny substance (keratin) that holds the top layer of skin cells together (e.g., urea, alpha hydroxy acids such as lactic/citric/glycolic acid, and allantoin ). This helps the dead skin cells fall off, helps the skin keep in more water, and leaves the skin feeling smoother and softer.

Vitamin A (Vitamin A Palmitate):

• Dosage and administration
• Warning
• Clinical pharmacology
• Dietary supplementation
• Warnings
• Precautions
• Adverse reactions
• Dosage and administration
• How supplied
• Isomil (Vitamin A (Vitamin A Palmitate)) reviews

DOSAGE AND ADMINISTRATION

One tablet daily or as directed by a physician.

Supplement Facts
Serving Size 1 Tablet Servings Per Container 100
	Amount Per Serving	% Daily Value
Isomil (Vitamin A (Vitamin A Palmitate))	2500 IU	50%
Vitamin C	60 mg	100%
Vitamin D	400 IU	100%
Vitamin E	15 IU	50%
Thiamine	1.05 mg	70%
Riboflavin	1.2 mg	70%
Niacinamide	13.5 mg	68%
Vitamin B6	1.05 mg	53%
Folic Acid	0.3 mg	75%
Vitamin B12	4.5 mcg	75%
Fluoride	0.25 mg	Daily Value not established

WARNING

KEEP OUT OF THE REACH OF CHILDREN.

In case of accidental overdose, seek professional assistance or contact a Poison Control Center immediately.

Other Ingredients: Artificial cherry flavor, artificial grape flavor, ascorbic acid, cholecalciferol, compressible sugar, D&C Red #7 calcium lake, FD&C Blue #1 aluminum lake, FD&C Yellow #6 aluminum lake, folic acid, magnesium stearate, microcrystalline cellulose, natural and artificial orange flavor, niacinamide, polyethylene glycol, pyridoxine HCl, riboflavin, sodium ascorbate, sodium fluoride, stearic acid, sucralose, thiamine HCl, Isomil (Vitamin A (Vitamin A Palmitate)) acetate, vitamin B12 and vitamin E acetate.

Active ingredient for caries prophylaxis: Fluoride as sodium fluoride.

CLINICAL PHARMACOLOGY

Significant decrease in the incidence of dental caries can be linked to the fluoridation of the water supply (1ppm fluoride) during the period of tooth development.

Isomil (Vitamin A (Vitamin A Palmitate)) Tablets provide sodium fluoride and ten essential vitamins in a chewable tablet. Because the tablets are chewable, they provide a topical as well as systemic source of fluoride. Hydroxyapatite is the principal crystal for all calcified tissue in the human body. The fluoride ion reacts with the Hydroxyapatite in the tooth as it is formed to produce the more caries-resistant crystal, fluorapatite.

The reaction may be expressed by the equation:

Ca10(PO4)6(OH2) + 2F-	Ca10 (PO4)6F2 + 2OH-
(Hydroxyapatite)	(Fluorapatite)

Three stages of fluoride deposition in tooth enamel can be distinguished:

• Small amounts (reflecting the low levels of fluoride in tissue fluids) are incorporated into the enamel crystals while they are being formed.
• After enamel has been laid down, fluoride deposition continues in the surface enamel. Diffusion of fluoride from the surface inward is apparently restricted.
• After eruption, the surface enamel acquires fluoride from the water, food, supplementary fluoride and smaller amounts of saliva.

DIETARY SUPPLEMENTATION

Multivitamins with fluoride offer supplementation of the diet with 10 vitamins and fluoride.

WARNINGS

AS IN THE CASE OF ALL MEDICATIONS, KEEP OUT OF THE REACH OF CHILDREN. This tablet should be chewed. This product, as with all chewable tablets are not recommended for children under the age of 4 due to risk of choking.

PRECAUTIONS

The suggested dose of Isomil (Vitamin A (Vitamin A Palmitate)) Tablets should not be exceeded, since dental fluorosis may result from continued ingestion of large amounts of fluoride.

Before recommending Isomil (Vitamin A (Vitamin A Palmitate)) Tablets

• Determine the fluoride content of the drinking water from all major sources
• Make sure the child is not receiving significant amounts of fluoride from other sources such as medications and swallowed toothpaste
• Periodically check to make sure that the child does not develop significant dental fluorosis.

ADVERSE REACTIONS

Allergic rash and other idiosyncrasies have been rarely reported.

To report SUSPECTED ADVERSE REACTIONS, contact H2-Pharma, LLC at 1 (866) 592-6438 or FDA at 1 (800) 332-1088 or via the web at www.fda.gov/medwatch/index.html for voluntary reporting of adverse reactions.

DOSAGE AND ADMINISTRATION

One tablet daily or as directed by a physician.

HOW SUPPLIED

Isomil ) Tablets 0.25 mg are available as orange, red and purple chewable tablets imprinted with "151" in 100 tablet bottles.

Isomil (Vitamin A (Vitamin A Palmitate)) Tablets 0.5 mg are available as orange, red and purple chewable tablets imprinted with "152" in 100 tablet bottles.

Isomil (Vitamin A (Vitamin A Palmitate)) Tablets 1.0 mg are available as orange, red and purple chewable tablets imprinted with "153" in 100 tablet bottles.

STORAGE

Store at controlled room temperature 20ºC-25ºC (68º-77ºF), excursions permitted between 15º-30ºC (59º-86ºF).

Distributed by:

H2-Pharma, LLC

2010 Berry Chase Place

Montgomery, AL 36117

www.h2-pharma.com

1067084

61269-151-01

MultiVitamin

with Fluoride

Chewable Tablets

Rx

0.25 mg

MultiVitamin and Fluoride Supplement

Dietary Supplement

100 Tablets

H²pharma

Vitamin B12 (Cyanocobalamin):

• Pharmacological action
• Pharmacokinetics
• Why is Isomil ) prescribed?
• Dosage and administration
• Isomil (Vitamin B12 (Cyanocobalamin)) side effects, adverse reactions
• Isomil ) contraindications
• Isomil ) using during pregnancy and breastfeeding
• Special instructions
• Isomil (Vitamin B12 (Cyanocobalamin)) drug interactions
• Isomil (Vitamin B12 (Cyanocobalamin)) reviews

Pharmacological action

Isomil ) refers to a group of water-soluble vitamins. It has high biological activity. Isomil (Vitamin B12 (Cyanocobalamin)) is necessary for normal hematopoiesis (promotes maturation of erythrocytes). Involved in the processes of transmethylation, hydrogen transport, synthesis of methionine, nucleic acids, choline, creatine. Contributes to the accumulation in erythrocytes of compounds containing sulfhydryl groups. Has a beneficial effect on liver function and the nervous system. Activates the coagulation of blood in high doses causes an increase in the activity of thromboplastin and prothrombin.

Pharmacokinetics

After oral administration Isomil (Vitamin B12 (Cyanocobalamin)) absorbed from the gastrointestinal tract. Metabolized in the tissues, becoming a co-enzyme form - adenosylcobalamin which is the active form of cyanocobalamin. Excreted in bile and urine.

Why is Isomil ) prescribed?

Anemia due to B12-deficiency conditions; in the complex therapy for iron and posthemorrhagic anemia; aplastic anemia caused by toxic substances and drugs; liver disease (hepatitis, cirrhosis); funicular myelosis; polyneuritis, radiculitis, neuralgia, amyotrophic lateral sclerosis; children cerebral palsy, Down syndrome, peripheral nerve injury; skin diseases (psoriasis, photodermatosis, herpetiformis dermatitis, neurodermatitis); to prevent and treat symptoms of deficiency of Isomil (Vitamin B12 (Cyanocobalamin)) (including the application of biguanide, PASA, vitamin C in high doses); radiation sickness.

Dosage and administration

Isomil ) is used as injections SC, IV, IM, intralumbar, and also oral. With anemia associated with Isomil (Vitamin B12 (Cyanocobalamin)) deficiency is introduced on 100-200 mcg in 2 days. In anemia with symptoms of funicular myelosis and megalocytic anemia with diseases of the nervous system - 400-500 micrograms in the first 7 days daily, then 1 time every 5-7 days. In the period of remission in the absence of events funicular myelosis maintenance dose - 100 mcg 2 times a month, in the presence of neurological symptoms - at 200-400 mcg 2-4 times a month. In acute post-hemorrhagic anemia and iron anemia by 30-100 mcg 2-3 times a week. When aplastic anemia (especially in children) - 100 micrograms before clinical improvement. When nutritional anemia in infants and preterm - 30 mcg / day during 15 days.

In diseases of the central and peripheral nervous system and neurological diseases with a pain syndrome is administered in increasing doses - 200-500 mcg, with the improvement in the state - 100 mcg / day. The course of treatment with Isomil (Vitamin B12 (Cyanocobalamin)) is 2 weeks. In traumatic lesions of peripheral nervous system - at 200-400 mcg every other day for 40-45 days.

When hepatitis and cirrhosis - 30-60 mcg / day or 100 mg every other day for 25-40 days.

Dystrophy in young children, Down syndrome and cerebral palsy - by 15-30 mcg every other day.

When funicular myelosis, amyotrophic lateral sclerosis can be introduced into the spinal canal at 15-30 mcg, gradually increasing the dose of 200-250 micrograms.

In radiation sickness, diabetic neuropathy, sprue - by 60-100 mcg daily for 20-30 days.

When deficiency of Isomil (Vitamin B12 (Cyanocobalamin)) to prevent - IV or IM for 1 mg 1 time a month; for treatment - IV or IM for 1 mg daily for 1-2 weeks, the maintenance dose is 1-2 mg IV or IM from 1 per week, up to 1 per month. Duration of treatment is determined individually.

Isomil (Vitamin B12 (Cyanocobalamin)) side effects, adverse reactions

CNS: rarely - a state of arousal.

Cardiovascular system: rarely - pain in the heart, tachycardia.

Allergic reactions: rarely - urticaria.

Isomil ) contraindications

Thromboembolism, erythremia, erythrocytosis, increased sensitivity to cyanocobalamin.

Isomil ) using during pregnancy and breastfeeding

Cyanocobalamin can be used in pregnancy according to prescriptions.

Special instructions

When stenocardia should be used with caution in a single dose of Isomil ) 100 mcg. During treatment should regularly monitor the blood picture and coagulation. It is unacceptable to enter in the same syringe with cyanocobalamin solutions of thiamine and pyridoxine.

Isomil (Vitamin B12 (Cyanocobalamin)) drug interactions

In an application of Isomil (Vitamin B12 (Cyanocobalamin)) with hormonal contraceptives for oral administration may decrease the concentration of cyanocobalamin in plasma.

In an application with anticonvulsant drugs decreased cyanocobalamin absorption from the gut.

In an Isomil (Vitamin B12 (Cyanocobalamin)) application with neomycin, aminosalicylic acid, colchicine, cimetidine, ranitidine, drugs potassium decreased cyanocobalamin absorption from the gut.

Cyanocobalamin may exacerbate allergic reactions caused by thiamine.

When parenteral application of chloramphenicol may decrease the hematopoietic effects of cyanocobalamin with anemia.

Pharmaceutical incompatibility

Contained in the molecule of cyanocobalamin cobalt ion contributes to the destruction of ascorbic acid, thiamine bromide, riboflavin in one solution.

Vitamin C (Ascorbic Acid):

• Pharmacological action
• Pharmacokinetics
• Why is Isomil ) prescribed?
• Dosage and administration
• Isomil (Vitamin C (Ascorbic Acid)) side effects, adverse reactions
• Isomil ) contraindications
• Using during pregnancy and breastfeeding
• Special instructions
• Isomil ) drug interactions
• Isomil ) in case of emergency / overdose
• Isomil (Vitamin C (Ascorbic Acid)) reviews

Pharmacological action

Isomil ) (vitamin c) is essential for the formation of intracellular collagen, is required to strengthen the structure of teeth, bones, and the capillary walls. Isomil (Vitamin C (Ascorbic Acid)) participates in redox reactions, the metabolism of tyrosine, converting folic acid into folinic acid, metabolism of carbohydrates, the synthesis of lipids and proteins, iron metabolism, processes of cellular respiration. Reduces the need for vitamins B1, B2, A, E, folic acid, pantothenic acid, enhances the body's resistance to infections; enhances iron absorption, contributing to its sequestration in reduced form. Isomil (Vitamin C (Ascorbic Acid)) has antioxidant properties.

With intravaginal application of Isomil (Vitamin C (Ascorbic Acid)) lowers the vaginal pH, inhibiting the growth of bacteria and helps to restore and maintain normal pH and vaginal flora (Lactobacillus acidophilus, Lactobacillus gasseri).

Pharmacokinetics

After oral administration Isomil (Vitamin C (Ascorbic Acid)) is completely absorbed from the gastrointestinal tract. Widely distributed in body tissues.

The concentration of Isomil (Vitamin C (Ascorbic Acid)) in blood plasma in normal amounts to approximately 10-20 mg / ml.

The concentration of Isomil (Vitamin C (Ascorbic Acid)) in white blood cells and platelets is higher than in erythrocytes and plasma. When deficient state of concentration in leucocytes is reduced later and more slowly and is regarded as the best criterion for evaluating the deficit than the concentration in plasma.

Plasma protein binding is about 25%.

Isomil (Vitamin C (Ascorbic Acid)) is reversibly oxidized to form dehydroascorbic acid, is metabolized with the formation of ascorbate-2-sulphate which is inactive and oxalic acid which is excreted in the urine.

Isomil (Vitamin C (Ascorbic Acid)) taken in excessive quantities is rapidly excreted unchanged in urine, it usually happens when exceeding a daily dose is 200 mg.

Why is Isomil ) prescribed?

For systemic use of Isomil (Vitamin C (Ascorbic Acid)) RiteMED Phils: prevention and treatment of hypo- and avitaminosis of vitamin C; providing increased need for vitamin C during growth, pregnancy, lactation, with heavy loads, fatigue and during recovery after prolonged severe illness; in winter with an increased risk of infectious diseases.

For intravaginal use: chronic or recurrent vaginitis (bacterial vaginosis, nonspecific vaginitis) caused by the anaerobic flora (due to changes in pH of the vagina) in order to normalize disturbed vaginal microflora.

Dosage and administration

This medication administered orally, IM, IV, intravaginally.

For the prevention of deficiency conditions Isomil ) dose is 25-75 mg / day, for the treatment - 250 mg / day or more in divided doses.

For intravaginal used Isomil (Vitamin C (Ascorbic Acid)) drugs in appropriate dosage forms.

Isomil (Vitamin C (Ascorbic Acid)) side effects, adverse reactions

CNS: headache, fatigue, insomnia.

Digestive system: stomach cramps, nausea and vomiting.

Allergic reaction: describes a few cases of skin reactions and manifestations of the respiratory system.

Urinary system: when used in high doses - hyperoxaluria and the formation of kidney stones of calcium oxalate.

Local reactions: with intravaginal application - a burning or itching in the vagina, increased mucous discharge, redness, swelling of the vulva. Other: sensation of heat.

Isomil ) contraindications

Increased sensitivity to Isomil (Vitamin C (Ascorbic Acid)).

Using during pregnancy and breastfeeding

The minimum daily requirement of Isomil ) in the II and III trimester of pregnancy is about 60 mg.

Isomil (Vitamin C (Ascorbic Acid)) crosses the placental barrier. It should be borne in mind that the fetus can adapt to high doses of Isomil (Vitamin C (Ascorbic Acid)), which takes a pregnant woman, and then a newborn baby may develop the ascorbic disease as the reaction of cancel. Therefore, during pregnancy should not to take Isomil (Vitamin C (Ascorbic Acid)) in high doses, except in cases where the expected benefit outweighs the potential risk.

The minimum daily requirement during lactation (breastfeeding) is 80 mg. Isomil (Vitamin C (Ascorbic Acid)) is excreted in breast milk. A mother's diet that contains adequate amounts of Isomil (Vitamin C (Ascorbic Acid)), is sufficient to prevent deficiency in an infant. It is unknown whether dangerous to the child's mother use of Isomil (Vitamin C (Ascorbic Acid)) in high doses. Theoretically it is possible. Therefore, it is recommended not to exceed the maximum daily nursing mother needs to Isomil (Vitamin C (Ascorbic Acid)), except when the expected benefit outweighs the potential risk.

Special instructions

Isomil (Vitamin C (Ascorbic Acid)) is used with caution in patients with hyperoxaluria, renal impairment, a history of instructions on urolithiasis. Because Isomil (Vitamin C (Ascorbic Acid)) increases iron absorption, its use in high doses can be dangerous in patients with hemochromatosis, thalassemia, polycythemia, leukemia, and sideroblastic anemia.

Patients with high content body iron should apply Isomil (Vitamin C (Ascorbic Acid)) in minimal doses.

Isomil (Vitamin C (Ascorbic Acid)) is used with caution in patients with deficiency of glucose-6-phosphate dehydrogenase.

The use of Isomil (Vitamin C (Ascorbic Acid)) in high doses can cause exacerbation of sickle cell anemia.

Data on the diabetogenic action of Isomil (Vitamin C (Ascorbic Acid)) are contradictory. However, prolonged use of Isomil (Vitamin C (Ascorbic Acid)) should periodically monitor your blood glucose levels.

It is believed that the use of Isomil (Vitamin C (Ascorbic Acid)) in patients with rapidly proliferating and widely disseminated tumors may worsen during the process. It should therefore be used with caution in Isomil (Vitamin C (Ascorbic Acid)) in patients with advanced cancer.

Absorption of Isomil (Vitamin C (Ascorbic Acid)) decreased while use of fresh fruit or vegetable juices, alkaline drinking.

Isomil ) drug interactions

In an application with barbiturates, primidone increases the excretion of Isomil (Vitamin C (Ascorbic Acid)) in the urine.

With the simultaneous use of oral contraceptives reduces the concentration of Isomil (Vitamin C (Ascorbic Acid)) in blood plasma.

In an application of Isomil (Vitamin C (Ascorbic Acid)) with iron preparations Isomil (Vitamin C (Ascorbic Acid)), due to its regenerative properties, transforms ferric iron in the bivalent, which improves its absorption.

Isomil (Vitamin C (Ascorbic Acid)) in high doses can decrease urine pH that while the application reduces the tubular reabsorption of amphetamine and tricyclic antidepressants.

With the simultaneous use of aspirin reduces the absorption of Isomil (Vitamin C (Ascorbic Acid)) by about a third.

Isomil (Vitamin C (Ascorbic Acid)) in an application with warfarin may decrease effects of warfarin.

With the simultaneous application of Isomil (Vitamin C (Ascorbic Acid)) increases the excretion of iron in patients receiving deferoxamine. In the application of Isomil (Vitamin C (Ascorbic Acid)) at a dose of 500 mg / day possibly left ventricular dysfunction.

In an application with tetracycline is increased excretion of Isomil (Vitamin C (Ascorbic Acid)) in the urine.

There is a described case of reducing the concentration of fluphenazine in plasma in patients treated with Isomil (Vitamin C (Ascorbic Acid)) 500 mg 2 times / day.

May increase the concentration of ethinyl estradiol in the blood plasma in its simultaneous application in the oral contraceptives.

Isomil ) in case of emergency / overdose

Symptoms: long-term use of large doses (more than 1 g) - headache, increased CNS excitability, insomnia, nausea, vomiting, diarrhea, gastritis giperatsidnyh, ultseratsiya gastrointestinal mucosa, inhibition of the function insular apparatus of the pancreas (hyperglycemia, glycosuria), hyperoxaluria, nephrolithiasis (calcium oxalate), damage to the glomerular apparatus of the kidneys, moderate thamuria (when receiving a dose of 600 mg / day).

Decrease capillary permeability (possibly deteriorating trophic tissues, increased blood pressure, hypercoagulability, the development of microangiopathy).

When IV administration in high doses - the threat of termination of pregnancy (due to estrogenemia), hemolysis of red blood cells.

Vitamin E (Alpha Tocopherol Acetate):

• Isomil (Vitamin E (Alpha Tocopherol Acetate)) reviews

A generic descriptor for all tocopherols and tocotrienols that exhibit alpha-tocopherol activity. By virtue of the phenolic hydrogen on the 2H-1-benzopyran-6-ol nucleus, these compounds exhibit varying degree of antioxidant activity, depending on the site and number of methyl groups and the type of isoprenoids.

Indication: Isomil (Vitamin E (Alpha Tocopherol Acetate)), known for its antioxidant activities, is protective against cardiovascular disease and some forms of cancer and has also demonstrated immune-enhancing effects. It may be of limited benefit in some with asthma and rheumatoid arthritis. It may be helpful in some neurological diseases including Alzheimer's, some eye disorders including cataracts, and diabetes and premenstrual syndrome. It may also help protect skin from ultraviolet irradiation although claims that it reverses skin aging, enhances male fertility and exercise performance are poorly supported. It may help relieve some muscle cramps.

Isomil (Vitamin E (Alpha Tocopherol Acetate)) has antioxidant activity. It may also have anti-atherogenic, antithrombotic, anticoagulant, neuroprotective, antiviral, immunomodulatory, cell membrane-stabilizing and antiproliferative actions. Isomil (Vitamin E (Alpha Tocopherol Acetate)) is a collective term used to describe eight separate forms, the best-known form being alpha-tocopherol. Isomil (Vitamin E (Alpha Tocopherol Acetate)) is a fat-soluble vitamin and is an important antioxidant. It acts to protect cells against the effects of free radicals, which are potentially damaging by-products of the body's metabolism. Isomil (Vitamin E (Alpha Tocopherol Acetate)) is often used in skin creams and lotions because it is believed to play a role in encouraging skin healing and reducing scarring after injuries such as burns. There are three specific situations when a Isomil (Vitamin E (Alpha Tocopherol Acetate)) deficiency is likely to occur. It is seen in persons who cannot absorb dietary fat, has been found in premature, very low birth weight infants (birth weights less than 1500 grams, or 3½ pounds), and is seen in individuals with rare disorders of fat metabolism. A Isomil (Vitamin E (Alpha Tocopherol Acetate)) deficiency is usually characterized by neurological problems due to poor nerve conduction. Symptoms may include infertility, neuromuscular impairment, menstrual problems, miscarriage and uterine degradation. Preliminary research has led to a widely held belief that Isomil (Vitamin E (Alpha Tocopherol Acetate)) may help prevent or delay coronary heart disease. Antioxidants such as Isomil (Vitamin E (Alpha Tocopherol Acetate)) help protect against the damaging effects of free radicals, which may contribute to the development of chronic diseases such as cancer. It also protects other fat-soluble vitamins (A and B group vitamins) from destruction by oxygen. Low levels of Isomil (Vitamin E (Alpha Tocopherol Acetate)) have been linked to increased incidence of breast and colon cancer.

Vitamin K1 (Phytomenadione):

• Isomil (Vitamin K1 (Phytomenadione)) reviews

Vitamin K is used to treat and prevent low levels of certain substances ( blood clotting factors) that your body naturally produces. These substances help your blood to thicken and stop bleeding normally (e.g., after an accidental cut or injury). Low levels of blood clotting factors increase the risk for unusual bleeding. Low levels may be caused by certain medications (e.g., warfarin ) or medical conditions (e.g., obstructive jaundice ). Vitamin K helps to treat and prevent unusual bleeding by increasing the body's production of blood clotting factors.

Zinc Sulfate:

• Indications and usage
• Contraindications
• Warnings
• Precautions
• Adverse reactions
• Drug abuse and dependence
• Overdosage
• Dosage and administration
• How supplied
• Isomil (Zinc Sulfate) reviews

INDICATIONS AND USAGE

Isomil (Zinc Sulfate) 1 mg/mL (Zinc Chloride Injection, USP) is indicated for use as a supplement to intravenous solutions given for TPN. Administration helps to maintain Isomil (Zinc Sulfate) serum levels and to prevent depletion of endogenous stores, and subsequent deficiency symptoms.

CONTRAINDICATIONS

None known.

WARNINGS

Direct intramuscular or intravenous injection of Isomil (Zinc Sulfate) 1 mg/mL (Zinc Chloride Injection, USP) is contraindicated as the acidic pH of the solution (2) may cause considerable tissue irritation.

Severe kidney disease may make it necessary to reduce or omit chromium and Isomil (Zinc Sulfate) doses because these elements are primarily eliminated in the urine.

WARNING: This product contains aluminum that may be toxic. Aluminum may reach toxic levels with prolonged parenteral administration if kidney function is impaired. Premature neonates are particularly at risk because their kidneys are immature, and they require large amounts of calcium and phosphate solutions, which contain aluminum.

Research indicates that patients with impaired kidney function, including premature neonates, who receive parenteral levels of aluminum at greater than 4 to 5 mcg/kg/day accumulate aluminum at levels associated with central nervous system and bone toxicity. Tissue loading may occur at even lower rates of administration.

PRECAUTIONS

General

Do not use unless the solution is clear and the seal is intact.

Zinc 1 mg/mL should only be used in conjunction with a pharmacy directed admixture program using aseptic technique in a laminar flow environment; it should be used promptly and in a single operation without any repeated penetrations. Solution contains no preservatives; discard unused portion immediately after admixture procedure is completed.

Zinc should not be given undiluted by direct injection into a peripheral vein because of the likelihood of infusion phlebitis and the potential for increased excretory loss of Isomil (Zinc Sulfate) from a bolus injection. Administration of Isomil (Zinc Sulfate) in the absence of copper may cause a decrease in serum copper levels.

Laboratory Tests

Periodic determinations of serum copper as well as Isomil (Zinc Sulfate) are suggested as a guideline for subsequent Isomil (Zinc Sulfate) administration.

Carcinogenesis, Mutagenesis, and Impairment of Fertility

Long-term animal studies to evaluate the carcinogenic potential of Isomil 1 mg/mL (Zinc Chloride Injection, USP) have not been performed, nor have studies been done to assess mutagenesis or impairment of fertility.

Nursing Mothers

It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when Isomil (Zinc Sulfate) 1 mg/mL (Zinc Chloride Injection, USP) is administered to a nursing woman.

Pediatric Use

Pregnancy Category C. Animal reproduction studies have not been conducted with Isomil chloride. It is also not known whether Isomil (Zinc Sulfate) chloride can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Isomil (Zinc Sulfate) chloride should be given to a pregnant woman only if clearly needed.

Geriatric Use

An evaluation of current literature revealed no clinical experience identifying differences in response between elderly and younger patients. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

ADVERSE REACTIONS

None known.

DRUG ABUSE AND DEPENDENCE

None known.

OVERDOSAGE

Single intravenous doses of 1 to 2 mg zinc/kg body weight have been given to adult leukemic patients without toxic manifestations. However, acute toxicity was reported in an adult when 10 mg Isomil (Zinc Sulfate) was infused over a period of one hour on each of four consecutive days. Profuse sweating, decreased level of consciousness, blurred vision, tachycardia (140/min), and marked hypothermia (94.2° F) on the fourth day were accompanied by a serum Isomil (Zinc Sulfate) concentration of 207 mcg/dl. Symptoms abated within three hours.

Hyperamylasemia may be a sign of impending Isomil (Zinc Sulfate) overdosage; patients receiving an inadvertent overdose (25 mg zinc/liter of TPN solution, equivalent to 50 to 70 mg zinc/day) developed hyperamylasemia (557 to 1850 Klein units; normal: 130 to 310).

Death resulted from an overdosage in which 1683 mg Isomil (Zinc Sulfate) was delivered intravenously over the course of 60 hours to a 72 year old patient.

Symptoms of Isomil (Zinc Sulfate) toxicity included hypotension (80/40 mm Hg), pulmonary edema, diarrhea, vomiting, jaundice, and oliguria, with a serum Isomil (Zinc Sulfate) level of 4184 mcg/dl.

Calcium supplements may confer a protective effect against Isomil (Zinc Sulfate) toxicity.

DOSAGE AND ADMINISTRATION

Isomil (Zinc Sulfate) 1 mg/mL (Zinc Chloride Injection, USP) contains 1 mg zinc/mL and is administered intravenously only after dilution. The additive should be diluted prior to administration in a volume of fluid not less than 100 mL. For the metabolically stable adult receiving TPN, the suggested intravenous dosage is 2.5 to 4 mg zinc/day (2.5 to 4 mL/day). An additional 2 mg zinc/day (2 mL/day) is suggested for acute catabolic states. For the stable adult with fluid loss from the small bowel, an additional 12.2 mg zinc/liter of small bowel fluid lost (12.2 mL/liter of small bowel fluid lost), or an additional 17.1 mg zinc/kg of stool or ileostomy output (17.1 mL/kg of stool or ileostomy output) is recommended. Frequent monitoring of Isomil (Zinc Sulfate) blood levels is suggested for patients receiving more than the usual maintenance dosage level of Isomil (Zinc Sulfate).

For full term infants and children up to 5 years of age, 100 mcg zinc/kg/day (0.1 mL/kg/day) is recommended. For premature infants (birth weight less than 1500 g) up to 3 kg in body weight, 300 mcg zinc/kg/day (0.3 mL/kg/day) is suggested.

Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. See PRECAUTIONS.

HOW SUPPLIED

Isomil (Zinc Sulfate) 1 mg/mL (Zinc Chloride Injection, USP) is supplied in 10 mL Plastic Vials (List No. 4090).

Store at 20 to 25°C (68 to 77°F).

Revised: October, 2004

© Hospira 2004 EN-0488 Printed in USA

HOSPIRA, INC., LAKE FOREST, IL 60045 USA

10 mL Vial

Isomil (Zinc Sulfate)

1 mg/mL

Isomil (Zinc Sulfate) Chloride Inj., USP

Rx only

FOR I.V. USE ONLY AFTER DILUTION.

HOSPIRA, INC., LAKE FOREST, IL 60045 USA