DRUGS & SUPPLEMENTS

Kenalog

Rating: 5 - 1 review(s)
advertisement
How is the drug helping you?

Kenalog uses


1 INDICATIONS AND USAGE

Kenalog (triamcinolone acetonide extended-release injectable suspension) is indicated as an intra-articular injection for the management of osteoarthritis pain of the knee.

Kenalog is an extended-release synthetic corticosteroid indicated as an intra-articular injection for the management of osteoarthritis pain of the knee. ( 1)

Limitation of Use

Kenalog is not intended for repeat administration. ( 1)

Limitation of Use

Kenalog is not intended for repeat administration .

2 DOSAGE AND ADMINISTRATION

  • 32 mg administered as a single intra-articular injection in the knee.
  • See Instructions for Use (IFU) for instructions on reconstitution of Kenalog with the supplied diluent. ( 2.2)
  • It is normal for some residue to be left behind on the vial walls after withdrawing the suspension. ( 2.2)
  • Not interchangeable with other formulations of injectable Kenalog. ( 2.3)

2.1 Important Dosage and Administration Information

  • Kenalog is administered as a single intra-articular extended-release injection of Kenalog, to deliver 32 mg (5 mL).
  • Kenalog is for intra-articular use only and should not be administered by the following routes: epidural, intrathecal, intravenous, intraocular, intramuscular, intradermal, subcutaneous.
  • Kenalog is not suitable for use in small joints, such as the hand.
  • The efficacy and safety of repeat administration of Kenalog for the management of osteoarthritis pain of the knee have not been evaluated.
  • The efficacy and safety of Kenalog for management of osteoarthritis pain of shoulder and hip have not been evaluated.

2.2 Preparation and Administration of Intra-Articular Suspension

Refer to the Instructions for Use for directions on the preparation and administration of Kenalog.

Kenalog is supplied as a single-dose kit containing a vial of Kenalog microsphere powder, a vial of sterile diluent, and a sterile vial adapter.

Kenalog must be prepared using the diluent supplied in the kit.

Preparation of Kenalog requires close attention to the Instructions for Use to ensure successful administration.

Use proper aseptic technique throughout the dose preparation and administration procedure.

Kenalog is a suspension product and it is normal for some residue to be left behind on the vial walls after withdrawing the contents.

Promptly inject Kenalog after preparation to avoid settling of the suspension. If needed, the Kenalog suspension can be stored in the vial for up to 4 hours at ambient conditions. Gently swirl the vial to resuspend any of the settled microspheres prior to preparing the syringe for injection.

The usual technique for intra-articular injection should be followed. Aspiration of synovial fluid may be performed based on clinical judgment prior to administration of Kenalog.

2.3 Non-Interchangeability with Other Formulations of Kenalog for Intra-articular Use

Kenalog is not interchangeable with other formulations of injectable Kenalog.

advertisement

3 DOSAGE FORMS AND STRENGTHS

Kenalog is an injectable suspension that delivers 32 mg of Kenalog. Kenalog is supplied as a single-dose kit, containing:

  • One vial of Kenalog white to off-white microsphere powder
  • One vial of 5 mL sterile, clear diluent
  • One sterile vial adapter

Kenalog is an injectable suspension that delivers 32 mg of Kenalog. It is supplied as a single-dose kit containing one vial of Kenalog microsphere powder, one vial of 5 mL diluent, and one sterile vial adapter. ( 3)

4 CONTRAINDICATIONS

Kenalog is contraindicated in patients who are hypersensitive to Kenalog, corticosteroids or any components of the product .

Patients with hypersensitivity to Kenalog or any component of the product. ( 4)

5 WARNINGS AND PRECAUTIONS

  • Intra-articular Use Only: Do not administer Kenalog by epidural, intrathecal, intravenous, intraocular, intramuscular, intradermal, or subcutaneous routes.
  • Serious Neurologic Adverse Reactions with Epidural and Intrathecal Administration: Serious neurologic events have been reported following epidural or intrathecal corticosteroid administration. Corticosteroids are not approved for this use. ( 5.2)
  • Hypersensitivity Reactions: Serious reactions have been reported with Kenalog injection. Institute appropriate care upon occurrence of an anaphylactic reaction. ( 5.3)
  • Joint Infection and Damage: May cause joint pain accompanied by joint swelling. If this occurs, conduct appropriate evaluation to exclude septic arthritis and institute appropriate antimicrobial therapy if septic arthritis is confirmed. ( 5.4)

5.1 Warnings and Precautions Specific for Kenalog

Kenalog has not been evaluated and should not be administered by the following routes:

  • Epidural
  • Intrathecal
  • Intravenous
  • Intraocular
  • Intramuscular
  • Intradermal
  • Subcutaneous

.

5.2 Serious Neurologic Adverse Reactions with Epidural and Intrathecal Administration

Serious neurologic events, some resulting in death, have been reported with epidural injection of corticosteroids. Specific events reported include, but are not limited to, spinal cord infarction, paraplegia, quadriplegia, cortical blindness, and stroke . These serious neurologic events have been reported with and without use of fluoroscopy.

Reports of serious medical events have been associated with the intrathecal route of corticosteroid administration .

The safety and effectiveness of epidural and intrathecal administration of corticosteroids have not been established, and corticosteroids are not approved for this use. In particular, the formulation of Kenalog should not be considered safe to use for epidural or intrathecal administration.

5.3 Hypersensitivity Reactions

Rare instances of anaphylaxis have occurred in patients with hypersensitivity to corticosteroids. Cases of serious anaphylaxis, including death, have been reported in individuals receiving Kenalog injection, regardless of the route of administration . Institute appropriate care upon occurrence of an anaphylactic reaction.

5.4 Joint Infection and Damage

Intra-articular injection of corticosteroid may be complicated by joint infection. A marked increase in pain accompanied by local swelling, further restriction of joint motion, fever, and malaise are suggestive of septic arthritis. If this complication occurs and a diagnosis of septic arthritis is confirmed, institute appropriate antimicrobial therapy .

Avoid injection of a corticosteroid into an infected site. Local injection of a corticosteroid into a previously infected joint is not usually recommended. Examine any joint fluid present to exclude a septic process.

Corticosteroid injection into unstable joints is generally not recommended.

Intra-articular injection may result in damage to joint tissues.

5.5 Increased Risk of Infections

Intra-articularly injected corticosteroids are systemically absorbed. Patients who are on corticosteroids are more susceptible to infections than are healthy individuals. There may be decreased resistance and inability to localize infection when corticosteroids are used. Infection with any pathogen (viral, bacterial, fungal, protozoan, or helminthic) in any location of the body may be associated with the use of corticosteroids alone or in combination with other immunosuppressive agents. These infections may be mild to severe. With increasing doses of corticosteroids, the rate of occurrence of infectious complications increases. Corticosteroids may also mask some signs of current infection.

Advise patients to inform their health care provider if they develop fever or other signs or symptoms of infection. Advise patients who have not been vaccinated to avoid exposure to chicken pox or measles. Instruct patients to contact their health care provider immediately if they are exposed .

5.6 Alterations in Endocrine Function

Corticosteroids can produce reversible hypothalamic-pituitary-adrenal axis suppression, with the potential for adrenal insufficiency after withdrawal of treatment, which may persist for months.

In situations of stress during that period, institute corticosteroid replacement therapy.

Metabolic clearance of corticosteroids is decreased in hypothyroid patients and increased in hyperthyroid patients.

5.7 Cardiovascular Effects

Corticosteroids can cause elevations of blood pressure, salt and water retention, and increased excretion of potassium. These effects are less likely to occur with synthetic derivatives.

Monitor patients with congestive heart failure or hypertension for signs of edema, weight gain, and imbalance in serum electrolytes. Dietary salt restriction and potassium supplementation may be necessary.

5.8 Renal Effects

Corticosteroids can cause salt and water retention, and increased excretion of potassium. These effects are less likely to occur with synthetic derivatives. All corticosteroids increase calcium excretion.

Monitor patients with renal insufficiency for signs of edema, weight gain, and imbalance in serum electrolytes. Dietary salt restriction and potassium supplementation may be necessary.

5.9 Increased Intraocular Pressure

Corticosteroid use may be associated with development or exacerbation of increased intraocular pressure.

Monitor patients with elevated intraocular pressure for potential treatment adjustment.

5.10 Gastrointestinal Perforation

Corticosteroid administration is associated with increased risk of gastrointestinal perforation in patients with certain GI disorders such as active or latent peptic ulcers, diverticulosis, diverticulitis, ulcerative colitis and in patients with fresh intestinal anastomoses.

Avoid corticosteroids in these patients because signs of peritoneal irritation following gastrointestinal perforation may be minimal or absent.

5.11 Alterations in Bone Density

Corticosteroids decrease bone formation and increase bone resorption through their effect on calcium regulation and inhibition of osteoblast function.

Special consideration should be given to patients with or at increased risk of osteoporosis before initiating corticosteroid therapy.

5.12 Behavioral and Mood Disturbances

Corticosteroid use may be associated with new or aggravated adverse psychiatric reactions ranging from euphoria, insomnia, mood swings, and personality changes to severe depression and frank psychotic manifestations.

Special consideration should be given to patients with previous or current emotional instability or psychiatric illness before initiating corticosteroid therapy. Advise patients and/or caregivers to immediately report any new or worsening behavior or mood disturbances to their health care provider.

advertisement

6 ADVERSE REACTIONS

The following serious adverse reactions are described elsewhere in the labeling.

  • Serious Neurologic Adverse Reactions with Epidural and Intrathecal Administration [ see Warnings and Precautions ( 5.2) ]
  • Hypersensitivity Reactions [ see Warnings and Precautions ( 5.3) ]
  • Joint Infection and Damage [ see Warnings and Precautions ( 5.4) ]
  • Increased Risk of Infections [ see Warnings and Precautions ( 5.5) ]
  • Alterations in Endocrine Function [ see Warnings and Precautions ( 5.6) ]
  • Cardiovascular Effects [ see Warnings and Precautions ( 5.7) ]
  • Renal Effects [ see Warnings and Precautions ( 5.8) ]
  • Increased Intraocular Pressure [ see Warnings and Precautions ( 5.9) ]
  • Gastrointestinal Perforation [ see Warnings and Precautions ( 5.10) ]
  • Alternations in Bone Density [ see Warnings and Precautions ( 5.11) ]
  • Behavioral and Mood Disturbances [ see Warnings and Precautions ( 5.12) ]

Because clinical studies 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.

The data below reflect exposure to a single 32 mg intra-articular injection of Kenalog in clinical studies in patients with moderate to severe pain due to osteoarthritis of the knee. Clinical studies included randomized, double-blind, parallel-group, placebo and/or active-controlled, and pharmacokinetic/pharmacodynamic studies with follow-up ranging from 6-24 weeks. A total of 424 patients received Kenalog and 262 received placebo. Treatment emergent adverse reactions reported by greater than or equal to 1% of patients in the Kenalog arms are summarized below ( Table 1 and 2 ).

Overall, the incidence and nature of adverse reactions was similar to that observed with placebo.

Preferred Term (MedDRA) Kenalog

(N=424)

Placebo

(N=262)

Sinusitis 2% 1%
Cough 2% 1%
Contusions 2% 1%
Preferred Term (MedDRA) Kenalog

(N=424)

Placebo

(N=262)

Joint Swelling 3% 2%
Contusions 2% 1%

Most commonly reported adverse reactions (incidence ≥1%) in clinical studies include sinusitis, cough, and contusions. ( 6)

To report SUSPECTED ADVERSE REACTIONS, contact Flexion Therapeutics, Inc. at 1-844-FLEXION (353-9466) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch .

Corticosteroid Adverse Reactions

The following adverse reactions, presented alphabetically by body system, are from voluntary reports or clinical studies of corticosteroids. Because some of 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 reactions: Anaphylaxis including death, angioedema .

Cardiovascular: Bradycardia, cardiac arrest, cardiac arrhythmias, cardiac enlargement, circulatory collapse, congestive heart failure, hypertension , fat embolism, hypertrophic cardiomyopathy in premature infants, myocardial rupture following recent myocardial infarction, pulmonary edema, syncope, tachycardia, thromboembolism, thrombophlebitis, vasculitis.

Dermatologic: Acne, allergic dermatitis, cutaneous and subcutaneous atrophy, dry scaly skin, ecchymoses and petechiae, edema, erythema, hyperpigmentation, hypopigmentation, impaired wound healing, increased sweating, lupus erythematosus-like lesions, purpura, rash, sterile abscess, striae, suppressed reactions to skin tests, thin fragile skin, thinning scalp hair, urticaria.

Endocrine: Decreased carbohydrate and glucose tolerance, development of Cushingoid state, glycosuria, hirsutism, hypertrichosis, increased requirements for insulin or oral hypoglycemic agents in diabetes, manifestations of latent diabetes mellitus, menstrual irregularities, secondary adrenocortical and pituitary unresponsiveness (particularly in times of stress, as in trauma, surgery, or illness), suppression of growth in pediatric patients.

Fluid and electrolyte disturbances: Congestive heart failure in susceptible patients , fluid retention, sodium retention.

Gastrointestinal: Abdominal distention, bowel/bladder dysfunction (after intrathecal administration) , elevation in serum liver enzyme levels (usually reversible upon discontinuation), hepatomegaly, increased appetite, nausea, pancreatitis, peptic ulcer with possible perforation and hemorrhage, perforation of the small and large intestine (particularly in patients with inflammatory bowel disease) , ulcerative esophagitis.

Metabolic: Negative nitrogen balance due to protein catabolism.

Musculoskeletal: Aseptic necrosis of femoral and humeral heads, calcinosis (following intra-articular or intralesional use), Charcot-like arthropathy, loss of muscle mass, muscle weakness, osteoporosis, pathologic fracture of long bones, post injection flare (following intra-articular use), steroid myopathy, tendon rupture, vertebral compression fractures.

Neurologic/Psychiatric: Convulsions, depression, emotional instability, euphoria, headache, increased intracranial pressure with papilledema (pseudotumor cerebri) usually following discontinuation of treatment, insomnia, mood swings, neuritis, neuropathy, paresthesia, personality changes, psychiatric disorders , vertigo. Arachnoiditis, meningitis, paraparesis/paraplegia, and sensory disturbances have occurred after intrathecal administration. Spinal cord infarction, paraplegia, quadriplegia, cortical blindness, and stroke (including brainstem) have been reported after epidural administration of corticosteroids .

Ophthalmic: Exophthalmos, glaucoma, increased intraocular pressure , posterior subcapsular cataracts, rare instances of blindness associated with periocular injections.

Other: Abnormal fat deposits, decreased resistance to infection, hiccups, increased or decreased motility and number of spermatozoa, malaise, moon face, weight gain.

advertisement

7 DRUG INTERACTIONS

No drug-drug interaction studies have been conducted with Kenalog. Table 3 contains drug interactions associated with systemic corticosteroids.

Aminoglutethimide Aminoglutethimide may lead to a loss of corticosteroid-induced adrenal suppression.
Amphotericin B injection and potassium-depleting agents When corticosteroids are administered concomitantly with potassium-depleting agents (i.e., amphotericin B, diuretics), observe patients closely for development of hypokalemia. There have been cases reported in which concomitant use of amphotericin B and hydrocortisone was followed by cardiac enlargement and congestive heart failure.
Antibiotics Macrolide antibiotics have been reported to cause a significant decrease in corticosteroid clearance.
Anticholinesterases Concomitant use of anticholinesterase agents and corticosteroids may produce severe weakness in patients with myasthenia gravis. If possible, withdraw anticholinesterase agents at least 24 hours before initiating corticosteroid therapy.
Anticoagulants, oral Coadministration of corticosteroids and warfarin usually results in inhibition of response to warfarin, although there have been some conflicting reports. Therefore, monitor coagulation indices frequently to maintain the desired anticoagulant effect.
Antidiabetics Because corticosteroids may increase blood glucose concentrations, dosage adjustments of antidiabetic agents may be required.
Antitubercular drugs Serum concentrations of isoniazid may be decreased.
CYP 3A4 inducers

(e.g., barbiturates, phenytoin, carbamazepine, and rifampin)

Drugs which induce hepatic microsomal drug metabolizing enzyme activity may enhance metabolism of corticosteroids and require that the dosage of corticosteroid be increased.
CYP 3A4 inhibitors

(e.g., ketoconazole)

Ketoconazole, a strong CYP3A4 inhibitor, has been reported to decrease the metabolism of certain corticosteroids by up to 60% leading to an increased risk of corticosteroid side effects.
Cholestyramine Cholestyramine may increase the clearance of corticosteroids.
Cyclosporine Increased activity of both cyclosporine and corticosteroids may occur when the two are used concurrently. Convulsions have been reported with this concurrent use.
Digitalis glycosides Patients on digitalis glycosides may be at increased risk of arrhythmias due to hypokalemia.
Estrogens, including

oral contraceptives

Estrogens may decrease the hepatic metabolism of certain corticosteroids, thereby increasing their effect.
Nonsteroidal

anti-inflammatory

drugs (NSAIDs)

Concomitant use of aspirin (or other nonsteroidal anti-inflammatory drugs) and corticosteroids increases the risk of gastrointestinal side effects. Aspirin should be used cautiously in conjunction with corticosteroids in hypoprothrombinemia. The clearance of salicylates may be increased with concurrent use of corticosteroids.
Skin tests Corticosteroids may suppress reactions to allergy related skin tests.
Vaccines Patients on prolonged corticosteroid therapy may exhibit a diminished response to toxoids and live or inactivated vaccines due to inhibition of antibody response. Corticosteroids may also potentiate the replication of some organisms contained in live attenuated vaccines. If possible, defer routine administration of vaccines or toxoids until corticosteroid therapy is discontinued.
advertisement

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Risk Summary

There are no data regarding the use of Kenalog in pregnant women to inform a drug associated risk of adverse developmental outcomes. Published studies on the association between corticosteroids and fetal outcomes have reported inconsistent findings and have important methodological limitations. The majority of published literature with corticosteroid exposure during pregnancy includes the oral, topical and inhaled dosage formulations; therefore, the applicability of these findings to a single intra-articular injection of Kenalog is limited. In animal reproductive studies from the published literature, pregnant mice, rats, rabbits, or primates administered Kenalog during the period of organogenesis at doses that produced exposures less than the maximum recommended human dose caused resorptions, decreased fetal body weight, craniofacial and/or other abnormalities such as omphalocele .

The estimated background risk of major birth defects and miscarriage for the indicated population is unknown. All pregnancies have a background risk of birth defect, loss, or other adverse outcomes. In the U.S. general population, the estimated risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively.

Data

Animal Data

The exposure margins listed below are based on body surface area comparisons (mg/m 2) to the highest daily Kenalog exposure at the MRHD of 32 mg Kenalog via Kenalog.

Pregnant mice dosed with Kenalog via intramuscular or subcutaneous injection at doses equivalent to 0.8 times the MRHD or higher during organogenesis caused cleft palate and a higher rate of resorption. In pregnant rats dosed with Kenalog via intramuscular or subcutaneous injection at doses equivalent to 0.3 times the MRHD or higher during organogenesis caused developmental abnormality (cleft palate, omphalocele, late resorption, and growth retardation) and fetal mortality. No notable maternal toxicity was observed in rodents.

Pregnant rabbits dosed with Kenalog via intramuscular injection for 4 days during organogenesis at doses equivalent to 0.15 times the MRHD or higher caused resorption and cleft palate. No notable maternal toxicity was observed.

Pregnant primates dosed with Kenalog via intramuscular injection for 4 days during organogenesis at doses equivalent to 3 times the MRHD or higher caused severe craniofacial CNS and skeletal/visceral malformation and higher prenatal death. No notable maternal toxicity was observed.

No peri- and post-natal development studies of Kenalog in animals have been conducted.

8.2 Lactation

Risk Summary

There are no available data on the presence of Kenalog in either human or animal milk, the effects on the breastfed infant, or the effects on milk production. However, corticosteroids have been detected in human milk and may suppress milk production. It is not known whether intra-articular administration of Kenalog could result in sufficient systemic absorption to produce detectable quantities in human milk. The developmental and health benefits of breastfeeding should be considered along with the mother's clinical need for Kenalog and any potential adverse effects on the breastfed infant from Kenalog or from the underlying maternal condition.

8.3 Females and Males of Reproductive Potential

Corticosteroids may result in menstrual pattern irregularities such as deviations in timing and duration of menses and an increased or decreased loss of blood.

8.4 Pediatric Use

The safety and effectiveness of Kenalog in pediatric patients have not been established.

The adverse effects of corticosteroids in pediatric patients are similar to those in adults. Carefully observe pediatric patients, including weight, height, linear growth, blood pressure, intraocular pressure, and clinical evaluation for the presence of infection, psychosocial disturbances, thromboembolism, peptic ulcers, cataracts, and osteoporosis. Weigh potential growth effects of treatment against clinical benefits obtained and the availability of treatment alternatives.

8.5 Geriatric Use

Of the total number of patients administered 32 mg Kenalog in clinical studies (N=424), 143 patients were 65 years of age or older. No overall differences in safety or effectiveness were observed between elderly and younger subjects, and other reported clinical experience with Kenalog has not identified differences in responses between the elderly and younger patients, but greater sensitivity of some older individuals cannot be ruled out.

11 DESCRIPTION

Kenalog (triamcinolone acetonide extended-release injectable suspension) is a microsphere formulation of Kenalog, a corticosteroid, to be administered by intra-articular injection.

Kenalog is formulated in 75:25 poly(lactic-co-glycolic acid) (PLGA) microspheres with a nominal drug load of 25% (w/w) and is provided as a sterile white to off-white powder. Kenalog is prepared with a supplied diluent containing an isotonic, sterile, aqueous solution of sodium chloride (NaCl; 0.9% w/w), sodium carboxymethylcellulose (CMC; 0.5% w/w) and polysorbate-80 (0.1% w/w) to form a 5 mL sterile suspension intended for intra-articular injection.

Active Ingredient

The chemical name for Kenalog is 9-fluoro-11β,16α,17,21-tetrahydroxypregna-1,4-diene- 3,20-dione cyclic 16,17-acetal with acetone. Its structural formula is:


MW 434.50 with a molecular formula of C 24H 31FO 6


Kenalog occurs as a white to almost white, crystalline powder having not more than a slight odor and is practically insoluble in water and very soluble in alcohol. Each vial of Kenalog powder contains 40 mg of Kenalog in 160 mg of microspheres, resulting in 32 mg of deliverable Kenalog when prepared according to the Instructions for Use.

Structural Formula

12 CLINICAL PHARMACOLOGY

12.1 Mechanism of Action

Kenalog is a corticosteroid with anti-inflammatory and immunomodulating properties. It binds to and activates the glucocorticoid receptor, leading to activation of anti-inflammatory transcription factors such as lipocortins and inhibition of inflammatory transduction pathways by blocking the release of arachidonic acid and preventing the synthesis of prostaglandins and leukotrienes.

12.2 Pharmacodynamics

Studies indicate that following a single intramuscular dose of 60 to 100 mg of immediate-release Kenalog injectable suspension, adrenal suppression occurs within 24 to 48 hours and then gradually returns to normal, usually in 30 to 40 days. To assess potential effects of the systemic levels of Kenalog associated with a single intra-articular administration of Kenalog on hypothalamic pituitary adrenal (HPA) axis function, serum and urine cortisol levels were monitored over 6 weeks post injection. Adrenal suppression with Kenalog occurred within 12-24 hours and then gradually returned to normal, within 30-42 days.

Corticosteroids may increase blood glucose concentrations.

In a study where 18 patients with osteoarthritis knee pain and controlled type 2 diabetes mellitus received a single IA injection of Kenalog into the knee, the change from baseline in average blood glucose over the 72 hours after injection as measured by a continuous glucose monitoring device was 8.2 mg/dL (95% confidence interval 0.1, 29.2).

12.3 Pharmacokinetics

Kenalog is an extended-release dosage form consisting of microspheres of poly(lactic-co-glycolic acid) (PLGA) containing Kenalog. Plasma pharmacokinetic parameters for Kenalog following IA administration of Kenalog or 40 mg immediate-release Kenalog into the knee are provided in Table 4.

* 33 patients contributed to the analyses of these parameters

† 14 patients contributed to the analyses of these parameters

1 Median (min, max) values for t max

Kenalog

PK Parameters 1

Kenalog

(N=60)

Kenalog

(N=18)

C max (pg/mL) 1143.7

(611.06)

21062.2

(18466.79)

AUC 0-24 hour

(pg-h/mL)

21219.2

(11325.62)

297545.3

(222402.77)

AUC 0-inf

(pg-h/mL)

842149.2

(1062004.97)*

1567565.0

(1246330.95)

t max

(h)

7

(1, 1008)

6

(2, 24)

t 1/2

(h)

633.9

(893.0)*

146.9

(213.29)

13 NONCLINICAL TOXICOLOGY

13.1 Carcinogenesis, Mutagenesis, Impairment of Fertility

Carcinogenesis

Long-term animal studies to evaluate the carcinogenic potential of Kenalog have not been conducted.

Mutagenesis

Adequate mutagenicity studies have not been conducted with Kenalog.

Impairment of Fertility

Studies in animals to evaluate the impairment of fertility of Kenalog have not been conducted.

14 CLINICAL STUDIES

The efficacy of Kenalog was demonstrated in a multi-center, international, randomized, double-blind, parallel-arm, placebo- and active-controlled study in patients with osteoarthritis pain of the knee. A total of 484 patients (ZILRETTA 32 mg, N=161; placebo [saline], N=162; active control [a crystalline suspension, immediate-release formulation of Kenalog 40 mg], N=161) were treated and followed for up to 24 weeks. Patients had a mean age of 62 (range 40 to 85 years); baseline demographics and disease characteristics were balanced across treatment arms. Twenty-five percent (25%) of patients had received at least one prior corticosteroid intra-articular injection more than 3 months prior to treatment. A total of 470 patients (97%) completed follow-up to Week 12, the time point for primary efficacy determination, and 443 (91.5%) completed to Week 24.

The primary efficacy endpoint comparing Kenalog to placebo was change from baseline at Week 12 in the weekly mean of the Average Daily Pain intensity scores (ADP) as assessed by a 0-10 Numeric Rating Scale (NRS). Kenalog demonstrated a statistically significant reduction in pain intensity at the primary endpoint vs placebo. Kenalog also demonstrated a reduction in pain intensity scores each week from Weeks 1 through 12 ( Figure 1 ).

In a secondary exploratory analysis, statistical significance was not demonstrated between the Kenalog and the active control (immediate-release Kenalog) treatment groups for the change from baseline at Week 12 in weekly mean ADP.

Figure 1: Weekly Change from Baseline to Week 12 in Average Daily Pain

Figure 1

16 HOW SUPPLIED/STORAGE AND HANDLING

Description NDC Presentation/How Supplied
Kenalog NDC 70801-003-01 Kenalog (triamcinolone acetonide extended-release injectable suspension) single-dose kit.
Kit Contents
Kenalog microsphere powder NDC 70801-001-01 5 mL single-dose vial to deliver 32 mg of Kenalog supplied as a sterile, white to off-white powder in a cerium glass (clear) vial with a rubber stopper and an aluminum seal with a gray plastic cap.
Diluent NDC 70801-002-01 5 mL single-dose vial supplied as a sterile, clear liquid solution of 0.9% w/w sodium chloride (normal saline) containing 0.5% w/w sodium carboxymethylcellulose, and 0.1% w/w polysorbate-80 in a glass vial with a rubber stopper, aluminum seal and white plastic cap.
Sterile vial adapter

STORAGE

To maintain expiry period, refrigerate the Kenalog single-dose kit (36°-46°F; 2°-8°C) before use.

If refrigeration is unavailable, store the Kenalog single-dose kit in the sealed, unopened kit at temperatures not exceeding 77°F (25°C) for up to six weeks and then discard. Do not expose the Kenalog single-dose kit to temperatures above 77°F (25°C).

Do not freeze. Store vials in carton.

17 PATIENT COUNSELING INFORMATION

Increased Risk of Infections

Inform patients that they may be more likely to develop infections when taking corticosteroids. Instruct patients to contact their health care provider if they develop fever or other signs or symptoms of infection.

Advise patients who have not been vaccinated to avoid exposure to chicken pox or measles. Instruct patients to contact their health care provider immediately if they are exposed .

Risk of Drug Interactions

There are a number of medicines that can interact with corticosteroids such as Kenalog. Advise patients to alert their health care provider(s) to assess the need to adjust their medication(s) .

Risk of Adverse Psychiatric Reactions

Inform patients that corticosteroid use may be associated with adverse psychiatric reactions. Advise patients and/or caregivers to immediately report any new or worsening behavioral or mood disturbances to their health care provider .

Manufactured for Flexion Therapeutics, Inc., 10 Mall Rd, Suite 301, Burlington, MA 01803

Kenalog and Flexion are trademarks of Flexion Therapeutics, Inc.

Copyright © 2017 Flexion Therapeutics, Inc. All rights reserved.

For more information, go to Kenalog.com or call 1-844-FLEXION (353-9466).

Part Number: 60-004-01

Version: 1, 10/2017

Instructions for Use

Kenalog

(triamcinolone acetonide

extended-release injectable suspension)

For intra-articular injection only

Single-dose device

Do not reuse.

IMPORTANT INFORMATION

  • Kenalog must be prepared using only the diluent supplied in the kit.
  • To ensure proper dosing, it is important that you follow the preparation and administration steps outlined in these instructions.
  • Promptly inject Kenalog after preparation to avoid settling of the suspension.
  • Kenalog is supplied as a single-dose kit and administered as a suspension containing microspheres.
  • The Kenalog powder vial contains an overfill to allow the appropriate dose to be withdrawn. Kenalog is a suspension product and it is normal for some residue to be left behind on the vial walls after withdrawing the contents.
  • Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration.
  • Use proper aseptic technique throughout the dose preparation and administration procedure.
  • Inspect all kit components to confirm they have not expired and the seals are intact.
  • For additional information, visit www.zilretta.com or call Flexion Therapeutics at 1-844-FLEXION (353-9466).

MATERIALS REQUIRED

(Fig.1)

Supplied

  • One 32 mg vial of Kenalog microsphere powder
  • One 5 mL vial of sterile diluent
  • One sterile vial adapter

Not Supplied

  • Three sterile needles, 21-gauge, 1½” length
  • One sterile Luer Lock compatible syringe, 5 mL
  • Sterile alcohol pads
  • Paper towels or pad to cushion vial tapping (not shown in Fig. 1)
  • Medical-grade gloves (not shown in Fig. 1)

Figure 1

1. Vial Preparation

Loosen Powder.

Place two paper towels or a pad on a properly-cleaned hard surface.

Grip the top of the Kenalog powder vial and tap firmly and repeatedly on the padded surface. Tap the vial until excess powder is dislodged from the vial and stopper ( Fig. 2). Before continuing, ensure that powder moves freely within the vial.

Figure 2

Inspect Kenalog Powder Vial.

As shown in Figure 3, the vial on the left, with the X, requires additional tapping because the powder is not properly dislodged. The vial on the right shows the powder properly dislodged and ready for the next step.

Figure 3

Remove Caps.

Remove the flip-off caps from the Kenalog powder and diluent vials ( Fig. 4).

Figure 4

Clean Vials.

Clean the Kenalog powder and diluent vial tops with an alcohol pad.

Use a separate alcohol pad for each vial.

Peel Off Vial Adapter Cover.

Peel off the paper cover from the vial adapter package ( Fig. 5).

Leave the adapter in the plastic holder.

Figure 5

Attach Vial Adapter to Kenalog Powder Vial.

Grip the plastic holder that contains the vial adapter.

As shown in Figure 6, place the Kenalog powder vial on a flat surface. In a vertical orientation, gently push the adapter down onto the Kenalog powder vial until the spike on the adapter penetrates the rubber stopper on the Kenalog powder vial. The adapter will snap into place.

Figure 6

2. Diluent Preparation

Attach Needle.

Attach a needle to the syringe and remove the needle guard.

Withdraw Diluent.

With a syringe and needle, withdraw 5 mL of diluent.

Replace the needle guard.

3. Dose Preparation

Remove Holder.

Remove the plastic holder from the vial adapter ( Fig. 7).

Figure 7

Remove Needle.

Remove the needle from the syringe containing diluent.

Attach Diluent Syringe.

Attach the syringe onto the vial adapter by pushing down and turning clockwise until you feel resistance ( Fig. 8).

Figure 8

Transfer Diluent.

Slowly and completely push down the syringe plunger to transfer the diluent into the Kenalog powder vial ( Fig. 9).

Note: Equalize the pressure in the syringe by slowly pulling back the plunger to the 5 mL mark. Ensure that no solution is drawn back into the syringe at this stage.

Figure 9

Mix Diluent and Powder ( Fig. 10).

With the syringe still attached to the Kenalog powder vial, hold the syringe and vial at a slight angle. Tap the bottom edge of the vial firmly and repeatedly, in a circular motion, on the padded surface.

Swirl gently every five or six taps.

Tap for at least one minute until all powder is completely dispersed.

Note: Avoid vigorous shaking of the vial to minimize foaming.

Note: At least one minute of tapping and gentle swirling is required to achieve uniform suspension.

Figure 10

Inspect Vial.

Inspect the Kenalog powder vial to ensure no clumped powder is visible and a uniform suspension has been achieved. A properly mixed suspension will be milky white, contain no clumps, and move freely down the vial wall.

As shown in Figure 11, the vial on the left, with the X, requires more tapping and gentle swirling because the powder is not mixed properly with the diluent. The vial on the right shows the powder properly mixed and ready for the next step.

Figure 11

Note: If needed, the Kenalog suspension can be stored in the vial for up to 4 hours at ambient conditions. The syringe must remain on the vial adapter while the suspension remains in the vial.

Withdraw Contents into Syringe.

Swirl the vial gently for at least 10 seconds to ensure the powder is fully suspended. Immediately depress the plunger fully and then invert the syringe so the vial is directly on top of the syringe ( Fig. 12).

Hold the syringe in a completely vertical position, per the illustration on the right, in Figure 12.

Withdraw the full contents from the Kenalog vial into the syringe.

Figure 12

Note: Kenalog is a suspension product and it is normal for some residue to be left behind on the vial walls after withdrawing the contents.

Remove Syringe.

Remove the syringe from the vial adapter by turning counter-clockwise.

Remove Air Bubbles.

Attach a new needle to the syringe and remove the needle guard.

Inspect for bubbles with the syringe held in a completely vertical position (needle upward). If bubbles are observed, gently tap the syringe with your finger until the bubbles rise to the top. Eliminate all bubbles by slowly depressing the plunger to displace the air from the syringe.

Replace the needle guard.

Attach New Needle.

Remove and discard the needle.

Attach a new needle.

4. Administration

Invert Syringe.

To ensure the powder is suspended, gently invert the syringe containing Kenalog several times just prior to administration, as shown in Figure 13.

Grip the syringe firmly and turn it so the syringe plunger is pointing straight down. Then turn the syringe gently, 180 degrees, until the plunger is pointing straight up.

Invert the syringe several times to ensure a properly mixed suspension.

Figure 13

A properly mixed suspension will be uniformly milky white and contain no clumps.

Inspect Syringe.

As shown in Figure 14, the syringe on the left, with the X, requires more inversions (turning) to properly mix the suspension. The syringe on the right shows the suspension properly mixed and ready for the next step.

Figure 14

Administer Kenalog.

The usual technique for intra-articular injection should be followed.

Aspiration of synovial fluid may be performed based on clinical judgment prior to administration of Kenalog.

Do not reuse excess Kenalog. Any excess suspension in the vial should be thrown away immediately after the injection. Leftover Kenalog in the vial must never be reused for another injection.

Note: The entire contents of the syringe must be injected to ensure the intended dose of Kenalog is delivered.

Note: Discard all used components in an appropriate medical waste container according to local regulations.

Note: Kenalog is for intra-articular use only. Kenalog is not intended for epidural, intrathecal, intravenous, intraocular, intramuscular, intradermal, or subcutaneous use.

Part Number: 60-005-01

Rev: 10/2017

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14

Principal Display Panel - Kenalog Cart 32mg Carton Label

NDC 70801-003-01 Rx Only

Kenalog

(triamcinolone acetonide extended-release

injectable suspension)

32 mg per vial

For intra-articular injection only.

Single-dose kit. Discard unused portion.

Must be reconstituted

with the supplied diluent.

This carton contains:

1 Vial of Kenalog

microsphere powder

1 Vial of diluent (5 mL)

for Kenalog

1 sterile vial adapter

flexion

Principal Display Panel - Kenalog Cart 32mg Professional Carton Label

NDC 70801-003-02 Rx Only

Kenalog

(triamcinolone acetonide extended-release

injectable suspension)

32 mg per vial

For intra-articular injection only.

Single-dose kit. Discard unused portion.

Must be reconstituted

with the supplied diluent.

PROFESSIONAL SAMPLE

NOT FOR SALE

OR REIMBURSEMENT

This carton contains:

1 Vial of Kenalog

microsphere powder

1 Vial of diluent (5 mL)

for Kenalog

1 sterile vial adapter

flexion

Principal Display Panel - Kenalog 32mg Vial Label

NDC 70801-001-01 Rx Only

Kenalog

(triamcinolone acetonide extended-release

injectable suspension)

32 mg per vial

For intra-articular injection only.

Must be reconstituted

with the supplied diluent.

flexion

Principal Display Panel - Kenalog 32mg Professional Vial Label

NDC 70801-001-02 Rx Only

Kenalog

(triamcinolone acetonide extended-release

injectable suspension)

32 mg per vial

For intra-articular injection only.

Must be reconstituted

with the supplied diluent.

flexion

Principal Display Panel - Kenalog Diluent 5mL Vial Label

NDC 70801-002-01 Rx Only

DILUENT

for use with Kenalog

5 mL

Sterile single-use vial

Do not administer directly.

flexion

Principal Display Panel - Kenalog Diluent 5mL Professional Vial Label

NDC 70801-002-02 Rx Only

DILUENT

for use with Kenalog

5 mL

Sterile single-use vial

Do not administer directly.

flexion

Kenalog pharmaceutical active ingredients containing related brand and generic drugs:

infoActive 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.


Kenalog available forms, composition, doses:

infoForm 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.


Kenalog destination | category:

infoDestination 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.


Kenalog Anatomical Therapeutic Chemical codes:

infoA 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.


Kenalog pharmaceutical companies:

infoPharmaceutical 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.


advertisement

References

  1. Dailymed."VETALOG (TRIAMCINOLONE ACETONIDE) INJECTION, SUSPENSION [BOEHRINGER INGELHEIM VETMEDICA, INC.]". https://dailymed.nlm.nih.gov/dailym... (accessed August 28, 2018).
  2. Dailymed."TRIAMCINOLONE ACETONIDE: DailyMed provides trustworthy information about marketed drugs in the United States. DailyMed is the official provider of FDA label information (package inserts).". https://dailymed.nlm.nih.gov/dailym... (accessed August 28, 2018).
  3. Dailymed."TRIAMCINOLONE: DailyMed provides trustworthy information about marketed drugs in the United States. DailyMed is the official provider of FDA label information (package inserts).". https://dailymed.nlm.nih.gov/dailym... (accessed August 28, 2018).

Frequently asked Questions

Can i drive or operate heavy machine after consuming Kenalog?

Depending on the reaction of the Kenalog after taken, if you are feeling dizziness, drowsiness or any weakness as a reaction on your body, Then consider Kenalog 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 Kenalog 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.

advertisement

Review

sDrugs.com conducted a study on Kenalog, 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 Kenalog 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 side effects

Did you get side effects while taking the Kenalog 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 Kenalog 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%

One visitor reported doses

What is the dose of Kenalog 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%
11-50mg1
100.0%

Visitor reviews


There are no reviews yet. Be the first to write one!


Your name: 
Email: 
Spam protection:  < Type 28 here

The information was verified by Dr. Arunabha Ray, MD Pharmacology

© 2002 - 2020 "sDrugs.com". All Rights Reserved