Enantone

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Enantone uses


INDICATIONS AND USAGE

Enantone INJECTION (leuprolide acetate) is indicated in the palliative treatment of advanced prostatic cancer.

CONTRAINDICATIONS

WARNINGS

Initially, Enantone, like other LH-RH agonists, causes increases in serum levels of testosterone. Transient worsening of symptoms, or the occurrence of additional signs and symptoms of prostate cancer, may occasionally develop during the first few weeks of Enantone treatment. A small number of patients may experience a temporary increase in bone pain, which can be managed symptomatically. As with other LH-RH agonists, isolated cases of ureteral obstruction and spinal cord compression have been observed, which may contribute to paralysis with or without fatal complications.

Safe use of Enantone in pregnancy has not been established clinically. Before starting treatment with Enantone, pregnancy must be excluded (see CONTRAINDICATIONS section). Periodic monitoring of serum testosterone and prostate-specific antigen (PSA) levels is recommended, especially if the anticipated clinical or biochemical response to treatment has not been achieved. It should be noted that results of testosterone determinations are dependent on assay methodology. It is advisable to be aware of the type and precision of the assay methodology to make appropriate clinical and therapeutic decisions.

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PRECAUTIONS

Patients with metastatic vertebral lesions and/or with urinary tract obstruction should be closely observed during the first few weeks of therapy.

Patients with known allergies to benzyl alcohol, an ingredient of the drug's vehicle, may present symptoms of hypersensitivity, usually local, in the form of erythema and induration at the injection site.

Information for Patients

See INFORMATION FOR PATIENTS which appears after the REFERENCE section.

Laboratory Tests

Response to Enantone should be monitored by measuring serum levels of testosterone and prostate-specific antigen. In the majority of patients, testosterone levels increased above baseline during the first week, declining thereafter to baseline levels or below by the end of the second week of treatment. Castrate levels were reached within two to four weeks and once attained were maintained for as long as drug administration continued.

Drug Interactions

See CLINICAL PHARMACOLOGY, Pharmacokinetics section.

Drug/Laboratory Test Interactions

Administration of Enantone in therapeutic doses results in suppression of the pituitary-gonadal system. Normal function is usually restored within 4 to 12 weeks after treatment is discontinued.

Carcinogenesis, Mutagenesis, Impairment of Fertility

Two-year carcinogenicity studies were conducted in rats and mice. In rats, a dose-related increase of benign pituitary hyperplasia and benign pituitary adenomas was noted at 24 months when the drug was administered subcutaneously at high daily doses. There was a significant but not dose-related increase of pancreatic islet-cell adenomas in females and of testicular interstitial cell adenomas in males (highest incidence in the low dose group). In mice no pituitary abnormalities were observed at a dose as high as 60 mg/kg for two years. Patients have been treated with Enantone for up to three years with doses as high as 10 mg/day and for two years with doses as high as 20 mg/day without demonstrable pituitary abnormalities.

Mutagenicity studies have been performed with Enantone using bacterial and mammalian systems. These studies provided no evidence of a mutagenic potential. Clinical and pharmacologic studies in adults (≥ 18 years) with Enantone and similar analogs have shown full reversibility of fertility suppression when the drug is discontinued after continuous administration for periods of up to 24 weeks. However, no clinical studies have been conducted with Enantone to assess the reversibility of fertility suppression.

Pregnancy

Teratogenic Effects

Pregnancy Category X

When administered on day 6 of pregnancy at test dosages of 0.00024, 0.0024, and 0.024 mg/kg (1/600 to 1/6 the human dose) to rabbits, Enantone produced a dose-related increase in major fetal abnormalities. Similar studies in rats failed to demonstrate an increase in major fetal malformations throughout gestation. There was increased fetal mortality and decreased fetal weights with the two higher doses of Enantone in rabbits and with the highest dose in rats. The effects on fetal mortality are expected consequences of the alterations in hormonal levels brought about by this drug.

Nursing Mothers

It is not known whether Enantone is excreted in human milk. Enantone should not be used by nursing mothers.

Pediatric Use

Geriatric Use

In the clinical trials for Enantone INJECTION, the majority (69%) of subjects studied were at least 65 years of age. Therefore, the labeling reflects the pharmacokinetics, efficacy and safety of Enantone in this population.

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ADVERSE REACTIONS

Clinical Trials

In the majority of patients testosterone levels increased above baseline during the first week, declining thereafter to baseline levels or below by the end of the second week of treatment. This transient increase was occasionally associated with a temporary worsening of signs and symptoms, usually manifested by an increase in bone pain. In a few cases a temporary worsening of existing hematuria and urinary tract obstruction occurred during the first week. Temporary weakness and paresthesia of the lower limbs have been reported in a few cases.

Potential exacerbations of signs and symptoms during the first few weeks of treatment is a concern in patients with vertebral metastases and/or urinary obstruction which, if aggravated, may lead to neurological problems or increase the obstruction. In a comparative trial of Enantone INJECTION (leuprolide acetate) versus DES, in 5% or more of the patients receiving either drug, the following adverse reactions were reported to have a possible or probable relationship to drug as ascribed by the treating physician. Often, causality is difficult to assess in patients with metastatic prostate cancer. Reactions considered not drug related are excluded.

Enantone

(N=98)

DES

(N=101)

Number of Reports
Cardiovascular System
  Congestive heart failure15
  ECG changes/ischemia1922
  High blood pressure85
  Murmur38
  Peripheral edema1230
  Phlebitis/thrombosis210
Gastrointestinal System
  Anorexia65
  Constipation79
  Nausea/vomiting517
Endocrine System
  Physiologic effect of decreased testosterone.Decreased testicular size711
  Gynecomastia/breast tenderness or pain763
  Hot flashes5512
  Impotence412
Hemic and Lymphatic System
  Anemia55
Musculoskeletal System
  Bone pain52
  Myalgia39
Central/Peripheral Nervous System
  Dizziness/lightheadedness57
  General pain1313
  Headache74
  Insomnia/sleep disorders75
Respiratory System
  Dyspnea28
  Sinus congestion56
Integumentary System
  Dermatitis58
Urogenital System
  Frequency/urgency68
  Hematuria64
  Urinary tract infection37
Miscellaneous
  Asthenia1010

In this same study, the following adverse reactions were reported in less than 5% of the patients on Enantone.

Cardiovascular System—Angina, Cardiac arrhythmias, Myocardial infarction, Pulmonary emboli; Gastrointestinal System—Diarrhea, Dysphagia, Gastrointestinal bleeding, Gastrointestinal disturbance, Peptic ulcer, Rectal polyps; Endocrine System—Libido decrease, Thyroid enlargement; Musculoskeletal System—Joint pain; Central/Peripheral Nervous System—Anxiety, Blurred vision, Lethargy, Memory disorder, Mood swings, Nervousness, Numbness, Paresthesia, Peripheral neuropathy, Syncope/blackouts, Taste disorders; Respiratory System—Cough, Pleural rub, Pneumonia, Pulmonary fibrosis; Integumentary System—Carcinoma of skin/ear, Dry skin, Ecchymosis, Hair loss, Itching, Local skin reactions, Pigmentation, Skin lesions; Urogenital System—Bladder spasms, Dysuria, Incontinence, Testicular pain, Urinary obstruction; Miscellaneous—Depression, Diabetes, Fatigue, Fever/chills, Hypoglycemia, Increased BUN, Increased calcium, Increased creatinine, Infection/inflammation, Ophthalmologic disorders, Swelling (temporal bone).In an additional clinical trial and from long-term observation of both studies, the following additional adverse events (excluding those considered not drug related) were reported for patients receiving Enantone.Cardiovascular System—Bradycardia, Carotid bruit, Extrasystole, Palpitations, Perivascular cuffing (eyes), Ruptured aortic aneurysm, Stroke, Tachycardia, Transient ischemic attack; Gastrointestinal System—Flatus, Dryness of mouth and throat, Hepatitis, Hepatomegaly, Occult blood (rectal exam), Rectal fistula/erythema; Endocrine System—Libido increase, Thyroid nodule; Musculoskeletal System—Ankylosing spondylosis, Arthritis, Blurred disc margins, Bone fracture, Muscle stiffness, Muscle tenderness, Pelvic fibrosis, Spasms/cramps; Central/Peripheral Nervous System—Auditory hallucinations/tinnitus, Decreased hearing, Decreased reflexes, Euphoria, Hyperreflexia, Loss of smell, Motor deficiency; Respiratory System—Chest tightness, Decreased breathing sounds, Hemoptysis, Pleuritic chest pain, Pulmonary infiltrate, Rales/rhonchi, Rhinitis, Strep throat, Wheezing/bronchitis; Integumentary System—Boil (pubic), Bruises, Hives, Keratosis, Mole, Shingles, Spiders; Urogenital System— Blisters on penis, Inguinal hernia, Penile swelling, Post void residual, Prostatic pain, Pyuria; Miscellaneous—Abdominal distention, Facial swelling/edema, Feet burning, Flu, Eyelid growth, Hypoproteinemia, Accidental injury, Knee effusion, Mass, Pallid, Sallow, Weakness.

Postmarketing

During postmarketing surveillance which includes other dosage forms and other patient populations, the following adverse events were reported.

Symptoms consistent with an anaphylactoid or asthmatic process have been rarely (incidence rate of about 0.002%) reported. Rash, urticaria, and photosensitivity reactions have also been reported. Localized reactions including induration and abscess have been reported at the site of injection. Symptoms consistent with fibromyalgia (e.g., joint and muscle pain, headaches, sleep disorders, gastrointestinal distress, and shortness of breath) have been reported individually and collectively.Cardiovascular System – Hypotension, Myocardial infarction; Endocrine System - Diabetes; Gastrointestinal System – Hepatic dysfunction; Hemic and Lymphatic System – Decreased WBC; Integumentary System – Hair growth; Central/Peripheral Nervous System – Spinal fracture/paralysis, Hearing disorder; Miscellaneous – Hard nodule in throat, Weight gain, Increased uric acid; Musculoskeletal System – Tenosynovitis-like symptoms; Respiratory System – Respiratory disorders.

Changes in Bone Density: Decreased bone density has been reported in the medical literature in men who have had orchiectomy or who have been treated with an LH-RH agonist analog. In a clinical trial, 25 men with prostate cancer, 12 of whom had been treated previously with Enantone for at least six months, underwent bone density studies as a result of pain. The leuprolide-treated group had lower bone density scores than the nontreated control group. It can be anticipated that long periods of medical castration in men will have effects on bone density.

Pituitary apoplexy: During post-marketing surveillance, rare cases of pituitary apoplexy (a clinical syndrome secondary to infarction of the pituitary gland) have been reported after the administration of gonadotropin-releasing hormone agonists. In a majority of these cases, a pituitary adenoma was diagnosed, with a majority of pituitary apoplexy cases occurring within 2 weeks of the first dose, and some within the first hour. In these cases, pituitary apoplexy has presented as sudden headache, vomiting, visual changes, ophthalmoplegia, altered mental status, and sometimes cardiovascular collapse. Immediate medical attention has been required.

See other Enantone DEPOT and Enantone INJECTION package inserts for other events reported in the same and different patient populations.

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OVERDOSAGE

In rats subcutaneous administration of 250 to 500 times the recommended human dose, expressed on a per body weight basis, resulted in dyspnea, decreased activity, and local irritation at the injection site. There is no evidence at present that there is a clinical counterpart of this phenomenon. In early clinical trials with Enantone doses as high as 20 mg/day for up to two years caused no adverse effects differing from those observed with the 1 mg/day dose.

DOSAGE AND ADMINISTRATION

The recommended dose is 1 mg (0.2 mL or 20 unit mark) administered as a single daily subcutaneous injection. As with other drugs administered chronically by subcutaneous injection, the injection site should be varied periodically. Each 0.2 mL contains 1 mg of Enantone, sodium chloride for tonicity adjustment, 1.8 mg of benzyl alcohol as preservative and water for injection. The pH may have been adjusted with sodium hydroxide and/or acetic acid.

Follow the pictorial directions on the reverse side of this package insert for administration. NOTE: As with all parenteral products, inspect the solution for discoloration and particulate matter before each use.

HOW SUPPLIED

Enantone INJECTION (leuprolide acetate) is a sterile solution supplied in a 2.8 mL multiple-dose vial. The vial is packaged as follows: 14 Day Patient Administration Kit with 14 disposable syringes and 28 alcohol swabs, NDC 0300-3612-28 and six-vial carton, NDC 0300-3612-24.

Store below 77°F (25°C). Do not freeze. Protect from light; store vial in carton until use. U.S. Patent Nos. 4,005,063 and 4,005,194.

REFERENCES

INFORMATION FOR PATIENTS

Be sure to consult your physician with any questions you may have or for information about Enantone INJECTION (leuprolide acetate) and its use.

WHAT IS Enantone?Enantone INJECTION (leuprolide acetate) is chemically similar to gonadotropin releasing hormone (GnRH or LH-RH) a hormone which occurs naturally in your body. Normally, your body releases small amounts of LH-RH and this leads to events which stimulate the production of sex hormones. However, when you inject Enantone INJECTION (leuprolide acetate), the normal events that lead to sex hormone production are interrupted and testosterone is no longer produced by the testes. LUPRON must be injected because, like insulin which is injected by diabetics, Enantone is inactive when taken by mouth. If you were to discontinue the drug for any reason, your body would begin making testosterone again.DIRECTIONS FOR USING Enantone

SOME SPECIAL ADVICE

Manufactured for

TAP Pharmaceuticals Inc.

Lake Forest, IL 60045, U.S.A.

® – Registered

(No. 3612)

03-A066-R7; December 2007

© 1993 – 2007 TAP Pharmaceutical Products Inc.

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For Pediatric Use

Enantone® INJECTION

(leuprolide acetate)

Rx only

DESCRIPTION

Enantone is a synthetic nonapeptide analog of naturally occurring gonadotropin releasing hormone (GnRH or LH-RH). The analog possesses greater potency than the natural hormone. The chemical name is 5- oxo -L-prolyl-L-histidyl-L-tryptophyl-L-seryl-L-tyrosyl-D-leucyl-L-leucyl-L-arginyl-N-ethyl-L-prolinamide acetate (salt) with the following structural formula:

Enantone INJECTION is a sterile, aqueous solution intended for daily subcutaneous injection. It is available in a 2.8 mL multiple dose vial containing Enantone (5 mg/mL), sodium chloride, USP (6.3 mg/mL) for tonicity adjustment, benzyl alcohol, NF as a preservative (9 mg/mL), and water for injection, USP. The pH may have been adjusted with sodium hydroxide, NF and/or acetic acid, NF.

CLINICAL PHARMACOLOGY

Enantone, a GnRH agonist, acts as a potent inhibitor of gonadotropin secretion when given continuously and in therapeutic doses. Animal and human studies indicate that following an initial stimulation of gonadotropins, chronic administration of Enantone results in suppression of ovarian and testicular steroidogenesis. This effect is reversible upon discontinuation of drug therapy.

Enantone is not active when given orally.

Pharmacokinetics

A pharmacokinetic study of Enantone in children has not been performed.

Absorption

In adults, bioavailability by subcutaneous administration is comparable to that by intravenous administration.

Distribution

The mean steady-state volume of distribution of leuprolide following intravenous bolus administration to healthy adult male volunteers was 27 L. In vitro binding to human plasma proteins ranged from 43% to 49%.

Metabolism

In healthy adult male volunteers, a 1 mg bolus of leuprolide administered intravenously revealed that the mean systemic clearance was 7.6 L/h, with a terminal elimination half-life of approximately 3 hours based on a two compartment model.

In rats and dogs, administration of 14C-labeled leuprolide was shown to be metabolized to smaller inactive peptides, a pentapeptide, tripeptides (Metabolites II and III) and a dipeptide (Metabolite IV). These fragments may be further catabolized. The major metabolite (M-I) plasma concentrations measured in 5 prostate cancer patients reached maximum concentration 2 to 6 hours after dosing and were approximately 6% of the peak parent drug concentration. One week after dosing, mean plasma M-I concentrations were approximately 20% of mean leuprolide concentrations.

Excretion

Following administration of Enantone DEPOT 3.75 mg to three adult patients, less than 5% of the dose was recovered as parent and M-I metabolite in the urine.

Special Populations

The pharmacokinetics of the drug in hepatically and renally impaired patients has not been determined.

Drug Interactions

No pharmacokinetic-based drug-drug interaction studies have been conducted with Enantone. However, because Enantone is a peptide that is primarily degraded by peptidase and the drug is only about 46% bound to plasma proteins, drug interactions would not be expected to occur.

CLINICAL STUDIES

In children with central precocious puberty (CPP), stimulated and basal gonadotropins are reduced to prepubertal levels. Testosterone and estradiol are reduced to prepubertal levels in males and females respectively. Reduction of gonadotropins will allow for normal physical and psychological growth and development. Natural maturation occurs when gonadotropins return to pubertal levels following discontinuation of Enantone.

The following physiologic effects have been noted with the chronic administration of Enantone in this patient population.

INDICATIONS AND USAGE

Enantone INJECTION is indicated in the treatment of children with central precocious puberty. Children should be selected using the following criteria:

CONTRAINDICATIONS

WARNINGS

During the early phase of therapy, gonadotropins and sex steroids rise above baseline because of the natural stimulatory effect of the drug. Therefore, an increase in clinical signs and symptoms may be observed (see CLINICAL PHARMACOLOGY section).

Noncompliance with drug regimen or inadequate dosing may result in inadequate control of the pubertal process. The consequences of poor control include the return of pubertal signs such as menses, breast development, and testicular growth. The long-term consequences of inadequate control of gonadal steroid secretion are unknown, but may include a further compromise of adult stature.

PRECAUTIONS

Patients with known allergies to benzyl alcohol, an ingredient of the vehicle of Enantone INJECTION, may present symptoms of hypersensitivity, usually local, in the form of erythema and induration at the injection site.

Information for Parents

Prior to starting therapy with Enantone INJECTION, the parent or guardian must be aware of the importance of continuous therapy. Adherence to daily drug administration schedules must be accepted if therapy is to be successful. Irregular dosing could restart the maturation process.

Laboratory Tests

Response to Enantone should be monitored 1-2 months after the start of therapy with a GnRH stimulation test and sex steroid levels. Measurement of bone age for advancement should be done every 6-12 months.

Sex steroids may increase or rise above prepubertal levels if the dose is inadequate. Once a therapeutic dose has been established, gonadotropin and sex steroid levels will decline to prepubertal levels.

Drug Interactions

See CLINICAL PHARMACOLOGY, Pharmacokinetics section.

Drug/Laboratory Test Interactions

Administration of Enantone in therapeutic doses results in suppression of the pituitary-gonadal system. Normal function is usually restored within 4 to 12 weeks after treatment is discontinued.

Carcinogenesis, Mutagenesis, Impairment of Fertility

A two-year carcinogenicity study was conducted in rats and mice. In rats, a dose-related increase of benign pituitary hyperplasia and benign pituitary adenomas was noted at 24 months when the drug was administered subcutaneously at high daily doses of 0.6 to 4 mg/kg. There was a significant but not dose-related increase of pancreatic islet-cell adenomas in females and of testes interstitial cell adenomas in males (highest incidence in the low dose group). In mice, no leuprolide acetate-induced tumors or pituitary abnormalities were observed at daily dose as high as 60 mg/kg (>5000 times the clinical doses based on body surface area). Adult patients have been treated with Enantone for up to three years with doses as high as 10 mg/day and for two years with doses as high as 20 mg/day without demonstrable pituitary abnormalities.

Although no clinical studies have been completed in children to assess the full reversibility of fertility suppression, animal studies (prepubertal and adult rats and monkeys) with Enantone and other GnRH analogs have shown functional recovery. However, following a study with Enantone, immature male rats demonstrated tubular degeneration in the testes even after a recovery period. In spite of the failure to recover histologically, the treated males proved to be as fertile as the controls. Also, no histologic changes were observed in the female rats following the same protocol. In both sexes, the offspring of the treated animals appeared normal. The effect of the treatment of the parents on the reproductive performance of the F1 generation was not tested. The clinical significance of these findings is unknown.

Pregnancy

Teratogenic Effects

Pregnancy Category X

When administered on day 6 of pregnancy at test dosages of 0.00024, 0.0024, and 0.024 mg/kg (1/1200 to 1/12 the human pediatric dose) to rabbits, Enantone produced a dose-related increase in major fetal abnormalities. Similar studies in rats failed to demonstrate an increase in fetal malformations. There was increased fetal mortality and decreased fetal weights with the two higher doses of Enantone in rabbits and with the highest dose in rats.

Nursing Mothers

It is not known whether Enantone is excreted in human milk. Enantone should not be used by nursing mothers.

Geriatric Use

ADVERSE REACTIONS

Clinical Trials

Potential exacerbation of signs and symptoms during the first few weeks of treatment is a concern in patients with rapidly advancing central precocious puberty.

In two studies of children with central precocious puberty, in 2% or more of the patients receiving the drug, the following adverse reactions were reported to have a possible or probable relationship to drug as ascribed by the treating physician. Reactions considered not drug related are excluded.

Number of Patients

N = 395 (Percent)

Body as a Whole
  General Pain7(2)
Integumentary System
  Acne/Seborrhea7(2)
  Injection Site Reactions Including Abscess21(5)
  Rash Including Erythema Multiforme8(2)
Urogenital System
  Vaginitis/Bleeding/ Discharge7(2)

In those same studies, the following adverse reactions were reported in less than 2% of the patients.

Body as a Whole - Body Odor, Fever, Headache, Infection; Cardiovascular System - Syncope, Vasodilation; Digestive System - Dysphagia, Gingivitis, Nausea/Vomiting; Endocrine System - Accelerated Sexual Maturity; Metabolic and Nutritional Disorders - Peripheral Edema, Weight Gain; Nervous System - Nervousness, Personality Disorder, Somnolence, Emotional Lability; Respiratory System - Epistaxis; Integumentary System - Alopecia, Skin Striae; Urogenital System - Cervix Disorder, Gynecomastia/Breast Disorders, Urinary Incontinence.

Postmarketing

During postmarketing surveillance, which includes other dosage forms and other patient populations, the following adverse events were reported.

Symptoms consistent with an anaphylactoid or asthmatic process have been rarely (incidence rate of about 0.002%) reported. Rash, urticaria, and photosensitivity reactions have also been reported. Localized reactions including induration and abscess have been reported at the site of injection. Symptoms consistent with fibromyalgia (e.g., joint and muscle pain, headaches, sleep disorders, gastrointestinal distress, and shortness of breath) have been reported individually and collectively.Cardiovascular System – Hypotension, Pulmonary embolism; Gastrointestinal System – Hepatic dysfunction; Hemic and Lymphatic System – Decreased WBC; Integumentary System – Hair growth; Central/Peripheral Nervous System – Peripheral neuropathy, Spinal fracture/paralysis, Hearing disorder; Miscellaneous – Hard nodule in throat, Weight gain, Increased uric acid; Musculoskeletal System – Tenosynovitis-like symptoms; Respiratory System – Respiratory disorders; Urogenital System – Prostate pain.

Changes in Bone Density: Decreased bone density has been reported in the medical literature in men who have had orchiectomy or who have been treated with an LH-RH agonist analog. In a clinical trial, 25 men with prostate cancer, 12 of whom had been treated previously with Enantone for at least six months, underwent bone density studies as a result of pain. The leuprolide-treated group had lower bone density scores than the nontreated control group. The effects on bone density in children are unknown.

Pituitary apoplexy: During post-marketing surveillance, rare cases of pituitary apoplexy (a clinical syndrome secondary to infarction of the pituitary gland) have been reported after the administration of gonadotropin-releasing hormone agonists. In a majority of these cases, a pituitary adenoma was diagnosed, with a majority of pituitary apoplexy cases occurring within 2 weeks of the first dose, and some within the first hour. In these cases, pituitary apoplexy has presented as sudden headache, vomiting, visual changes, ophthalmoplegia, altered mental status, and sometimes cardiovascular collapse. Immediate medical attention has been required.

See other Enantone INJECTION and Enantone DEPOT package inserts for adverse events reported in other patient populations.

OVERDOSAGE

In rats, subcutaneous administration of 125 to 250 times the recommended human pediatric dose, expressed on a per body weight basis, resulted in dyspnea, decreased activity, and local irritation at the injection site. There is no evidence at present that there is a clinical counterpart of this phenomenon. In early clinical trials using Enantone in adult patients, doses as high as 20 mg/day for up to two years caused no adverse effects differing from those observed with the 1 mg/day dose.

DOSAGE AND ADMINISTRATION

Enantone INJECTION can be administered by a patient/parent or health care professional.

The dose of Enantone INJECTION must be individualized for each child. The dose is based on a mg/kg ratio of drug to body weight. Younger children require higher doses on a mg/kg ratio. After 1-2 months of initiating therapy or changing doses, the child must be monitored with a GnRH stimulation test, sex steroids, and Tanner staging to confirm downregulation. Measurements of bone age for advancement should be monitored every 6-12 months. The dose should be titrated upward until no progression of the condition is noted either clinically and/or by laboratory parameters. The first dose found to result in adequate downregulation can probably be maintained for the duration of therapy in most children. However, there are insufficient data to guide dosage adjustment as patients move into higher weight categories after beginning therapy at very young ages and low dosages. It is recommended that adequate downregulation be verified in such patients whose weight has increased significantly while on therapy. As with other drugs administered by injection, the injection site should be varied periodically. Discontinuation of Enantone INJECTION should be considered before age 11 for females and age 12 for males. The recommended starting dose is 50 mcg/kg/day administered as a single subcutaneous injection. If total downregulation is not achieved, the dose should be titrated upward by 10 mcg/kg/day. This dose will be considered the maintenance dose. Follow the pictorial directions on the reverse side of this package insert for administration. NOTE: As with other parenteral products, inspect the solution for discoloration and particulate matter before each use.

HOW SUPPLIED

Enantone INJECTION (leuprolide acetate) is a sterile solution supplied in a 2.8 mL multiple-dose vial. The vial is packaged as follows:

U.S. Patent Nos. 4,005,063; 4,005,194.

REFERENCES


Manufactured for

TAP Pharmaceuticals Inc.

Lake Forest, IL 60045, U.S.A.

® – Registered (No. 3612)

ADMINISTERING THE INJECTION

Read this booklet before injecting the medication. Read the complete instructions for injection.

TAP Pharmaceutical Products Inc.

Lake Forest, IL 60045, U.S.A.

03-A066 R7; December 2007© 1993–2007 TAP Pharmaceutical Products Inc. Provided as an educational service by

TAP Pharmaceuticals Inc. TAP Pharmaceutical Products Inc.

Lake Forest, IL 60045, U.S.A.[Bar code 128 of commodity number]

ADMINISTERING THE INJECTION

Enantone pharmaceutical active ingredients containing related brand and generic drugs:

Active ingredient is the part of the drug or medicine which is biologically active. This portion of the drug is responsible for the main action of the drug which is intended to cure or reduce the symptom or disease. The other portions of the drug which are inactive are called excipients; there role is to act as vehicle or binder. In contrast to active ingredient, the inactive ingredient's role is not significant in the cure or treatment of the disease. There can be one or more active ingredients in a drug.


Enantone available forms, composition, doses:

Form of the medicine is the form in which the medicine is marketed in the market, for example, a medicine X can be in the form of capsule or the form of chewable tablet or the form of tablet. Sometimes same medicine can be available as injection form. Each medicine cannot be in all forms but can be marketed in 1, 2, or 3 forms which the pharmaceutical company decided based on various background research results.
Composition is the list of ingredients which combinedly form a medicine. Both active ingredients and inactive ingredients form the composition. The active ingredient gives the desired therapeutic effect whereas the inactive ingredient helps in making the medicine stable.
Doses are various strengths of the medicine like 10mg, 20mg, 30mg and so on. Each medicine comes in various doses which is decided by the manufacturer, that is, pharmaceutical company. The dose is decided on the severity of the symptom or disease.


Enantone destination | category:

Destination is defined as the organism to which the drug or medicine is targeted. For most of the drugs what we discuss, human is the drug destination.
Drug category can be defined as major classification of the drug. For example, an antihistaminic or an antipyretic or anti anginal or pain killer, anti-inflammatory or so.


Enantone Anatomical Therapeutic Chemical codes:

A medicine is classified depending on the organ or system it acts [Anatomical], based on what result it gives on what disease, symptom [Therapeutical], based on chemical composition [Chemical]. It is called as ATC code. The code is based on Active ingredients of the medicine. A medicine can have different codes as sometimes it acts on different organs for different indications. Same way, different brands with same active ingredients and same indications can have same ATC code.


Enantone pharmaceutical companies:

Pharmaceutical companies are drug manufacturing companies that help in complete development of the drug from the background research to formation, clinical trials, release of the drug into the market and marketing of the drug.
Researchers are the persons who are responsible for the scientific research and is responsible for all the background clinical trials that resulted in the development of the drug.


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References

  1. Dailymed."LUPRON (LEUPROLIDE ACETATE) LUPRON (LEUPROLIDE ACETATE) INJECTION, SOLUTION [TAP PHARMACEUTICAL PRODUCTS INC.]". https://dailymed.nlm.nih.gov/dailym... (accessed August 28, 2018).
  2. "leuprolide". https://pubchem.ncbi.nlm.nih.gov/su... (accessed August 28, 2018).
  3. "Leuprolide - DrugBank". http://www.drugbank.ca/drugs/DB0000... (accessed August 28, 2018).

Frequently asked Questions

Can i drive or operate heavy machine after consuming Enantone?

Depending on the reaction of the Enantone after taken, if you are feeling dizziness, drowsiness or any weakness as a reaction on your body, Then consider Enantone not safe to drive or operate heavy machine after consumption. Meaning that, do not drive or operate heavy duty machines after taking the capsule if the capsule has a strange reaction on your body like dizziness, drowsiness. As prescribed by a pharmacist, it is dangerous to take alcohol while taking medicines as it exposed patients to drowsiness and health risk. Please take note of such effect most especially when taking Primosa capsule. It's advisable to consult your doctor on time for a proper recommendation and medical consultations.

Is Enantone addictive or habit forming?

Medicines are not designed with the mind of creating an addiction or abuse on the health of the users. Addictive Medicine is categorically called Controlled substances by the government. For instance, Schedule H or X in India and schedule II-V in the US are controlled substances.

Please consult the medicine instruction manual on how to use and ensure it is not a controlled substance.In conclusion, self medication is a killer to your health. Consult your doctor for a proper prescription, recommendation, and guidiance.

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Review

sdrugs.com conducted a study on Enantone, and the result of the survey is set out below. It is noteworthy that the product of the survey is based on the perception and impressions of the visitors of the website as well as the views of Enantone consumers. We, as a result of this, advice that you do not base your therapeutic or medical decisions on this result, but rather consult your certified medical experts for their recommendations.

Visitor reports

One visitor reported useful

How is the drug Enantone useful in reducing or relieving the symptoms? How useful is it?
According to the survey conducted by the website sdrugs.com, there are variable results and below are the percentages of the users that say the medicine is useful to them and that say it is not helping them much. It is not ideal to continue taking the medication if you feel it is not helping you much. Contact your healthcare provider to check if there is a need to change the medicine or if there is a need to re-evaluate your condition. The usefulness of the medicine may vary from patient to patient, depending on the other diseases he is suffering from and slightly depends on the brand name.
Visitors%
Useful1
100.0%

One visitor reported side effects

Did you get side effects while taking the Enantone drug, or were there no side effects?
According to the survey conducted by website sdrugs.com users, the below-mentioned percentages indicate the number of people experiencing the side effects and the number of people not experiencing the side effects when taking Enantone medicine. Every drug produces minimal side effects, and they are negligible most times, when compared to the desired effect [use] of the medicine. Side effects depend on the dose you are taking, any drug interactions that happen when you are on other medications, if the patient is sensitive, and other associated conditions. If you cannot tolerate the side effects, consult your doctor immediately, so he can either adjust the dose or change the medication.
Visitors%
No side effects1
100.0%

Visitor reported price estimates

No survey data has been collected yet

Visitor reported frequency of use

No survey data has been collected yet

Seven visitors reported doses

What is the dose of Enantone drug you are taking?
According to the survey conducted among sdrugs.com website users, the maximum number of people are using the following dose 11-50mg. Few medications come in only one or two doses. Few are specific for adult dose and child dose. The dose of the medicine given to the patient depends on the severity of the symptom/disease. There can be dose adjustments made by the doctor, based on the progression of the disease. Follow-up is important.
Visitors%
11-50mg4
57.1%
6-10mg1
14.3%
1-5mg1
14.3%
51-100mg1
14.3%

Three visitors reported time for results

What is the time duration Enantone drug must be taken for it to be effective or for it to reduce the symptoms?
Most chronic conditions need at least some time so the dose and the drug action gets adjusted to the body to get the desired effect. The stastistics say sdrugs.com website users needed 1 day to notice the result from using Enantone drug. The time needed to show improvement in health condition after using the medicine Enantone need not be same for all the users. It varies based on other factors.
Visitors%
1 day1
33.3%
> 3 month1
33.3%
1 month1
33.3%

One visitor reported administration

The drugs are administered in various routes, like oral or injection form. They are administered before food or after food. How are you taking Enantone drug, before food or after food?
Click here to find out how other users of our website are taking it. For any doubts or queries on how and when the medicine is administered, contact your health care provider immediately.
Visitors%
With a meal1
100.0%

Seven visitors reported age

Visitors%
> 604
57.1%
46-602
28.6%
6-151
14.3%

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The information was verified by Dr. Rachana Salvi, MD Pharmacology

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