Betamethasone Dipropionate

BETAMETHASONE DIPROPIONATE — betamethasone dipropionate ointment
Teligent Pharma, Inc.

structural formula15 gram PDP

1 INDICATIONS AND USAGE

Betamethasone Dipropionate Ointment is a corticosteroid indicated for the relief of the inflammatory and pruritic manifestations of corticosteroid-responsive dermatoses in patients 13 years of age or older.

2 DOSAGE AND ADMINISTRATION

Apply a thin film of Betamethasone Dipropionate Ointment to the affected skin areas once or twice daily.

Therapy should be discontinued when control is achieved. If no improvement is seen within 2 weeks, reassessment of diagnosis may be necessary. Betamethasone Dipropionate Ointment is a super-high-potency topical corticosteroid. Treatment with Betamethasone Dipropionate Ointment should not exceed 50 g per week because of the potential for the drug to suppress the hypothalamic-pituitary-adrenal (HPA) axis.[see WARNINGS AND PRECAUTIONS (5.1)]

Betamethasone Dipropionate Ointment should not be used with occlusive dressings unless directed by a physician.
Avoid use on the face, groin, or axillae, or if skin atrophy is present at the treatment site.
Avoid contact with eyes. Wash hands after each application.

Betamethasone Dipropionate Ointment is for topical use only. It is not for oral, ophthalmic, or intravaginal use.

3 DOSAGE FORMS AND STRENGTHS

Ointment, 0.05%. Each gram of Betamethasone Dipropionate Ointment, 0.05% contains 0.643 mg betamethasone dipropionate (equivalent to 0.5 mg betamethasone) in a white to off-white ointment base.

4 CONTRAINDICATIONS

Betamethasone Dipropionate Ointment is contraindicated in patients who are hypersensitive to betamethasone dipropionate, to other corticosteroids, or to any ingredient in this preparation.

5 WARNINGS AND PRECAUTIONS

5.1 Effects on Endocrine System

Betamethasone Dipropionate Ointment can produce reversible hypothalamic-pituitary-adrenal (HPA) axis suppression with the potential for glucocorticosteroid insufficiency. This may occur during treatment or after withdrawal of treatment. Factors that predispose to HPA axis suppression include the use of high-potency steroids, large treatment surface areas, prolonged use, use of occlusive dressings, altered skin barrier, liver failure, and young age. Evaluation for HPA axis suppression may be done by using the adrenocorticotropic hormone (ACTH) stimulation test.

In a trial evaluating the effects of Betamethasone Dipropionate Ointment on the HPA axis, at 14 g per day, Betamethasone Dipropionate Ointment was shown to suppress the plasma levels of adrenal cortical hormones following repeated application to diseased skin in subjects with psoriasis. These effects were reversible upon discontinuation of treatment. At 7 g per day, Betamethasone Dipropionate Ointment was shown to cause minimal inhibition of the HPA axis when applied 2 times daily for 2 to 3 weeks in healthy subjects and in subjects with psoriasis and eczematous disorders.

With 6 g to 7 g of Betamethasone Dipropionate Ointment applied once daily for 3 weeks, no significant inhibition of the HPA axis was observed in subjects with psoriasis and atopic dermatitis, as measured by plasma cortisol and 24-hour urinary 17-hydroxy-corticosteroid levels.

If HPA axis suppression is documented, gradually withdraw the drug, reduce the frequency of application, or substitute with a less potent corticosteroid. Infrequently, signs and symptoms of steroid withdrawal may occur, requiring supplemental systemic corticosteroids.

Cushing’s syndrome and hyperglycemia may also occur with topical corticosteroids. These events are rare and generally occur after prolonged exposure to excessively large doses, especially of high-potency topical corticosteroids.

Pediatric patients may be more susceptible to systemic toxicity due to their larger skin surface to body mass ratios [see Use in Specific Populations (8.4)].

5.2 Ophthalmic Adverse Reactions

Use of topical corticosteroids, including Betamethasone Dipropionate Ointment, may increase the risk of posterior subcapsular cataracts and glaucoma. Cataracts and glaucoma have been reported postmarketing with the use of topical corticosteroid products, including Betamethasone Dipropionate Ointment [see ADVERSE REACTIONS (6.2)].

Avoid contact of Betamethasone Dipropionate Ointment with eyes. Advise patients to report any visual symptoms and consider referral to an ophthalmologist for evaluation.

5.3 Allergic Contact Dermatitis

Allergic contact dermatitis with corticosteroids is usually diagnosed by observing failure to heal rather than noting a clinical exacerbation. Such an observation should be corroborated with appropriate diagnostic patch testing. If irritation develops, topical corticosteroids should be discontinued and appropriate therapy instituted.

6 ADVERSE REACTIONS

6.1 Clinical Trials 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 clinical practice.

In controlled clinical trials, adverse reactions associated with the use of Betamethasone Dipropionate Ointment reported at a frequency of less than 1% included erythema, folliculitis, pruritus, and vesiculation.

6.2 Postmarketing Experience

Because adverse 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.

Postmarketing reports for local adverse reactions to topical corticosteroids may also include: skin atrophy, telangiectasias, burning, irritation, dryness, acneiform eruptions, hypopigmentation, perioral dermatitis, allergic contact dermatitis, secondary infection, hypertrichosis, striae, and miliaria.

Hypersensitivity reactions, consisting of predominantly skin signs and symptoms, e.g., contact dermatitis, pruritus, bullous dermatitis, and erythematous rash have been reported.

Ophthalmic adverse reactions of cataracts, glaucoma, increased intraocular pressure, and central serous chorioretinopathy have been reported with the use of topical corticosteroids, including topical betamethasone products.

8 USE IN SPECIFIC POPULATIONS

8.1 Pregnancy

Risk Summary
There are no available data of Betamethasone Dipropionate Ointment use in pregnant women to identify a drug-associated risk of major birth defects, miscarriage, or adverse maternal or fetal outcomes.
Observational studies suggest an increased risk of low birthweight infants with the use of greater than 300 grams of potent or very potent topical corticosteroid during a pregnancy. Advise pregnant women that Betamethasone Dipropionate Ointment may increase the risk of having a low birthweight infant and to use Betamethasone Dipropionate Ointment on the smallest area of skin and for the shortest duration possible.
In animal reproduction studies, increased malformation, including umbilical hernias, cephalocele, and cleft palate were observed after intramuscular administration of betamethasone dipropionate to pregnant rabbits. The available data do not allow the calculation of relevant comparisons between the systemic exposure of betamethasone dipropionate in animal studies to the systemic exposure that would be expected in humans after topical use of Betamethasone Dipropionate Ointment (see Data).
The 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
Betamethasone dipropionate has been shown to cause malformations in rabbits when given by the intramuscular route at doses of 0.05 mg/kg. The abnormalities observed included umbilical hernias, cephalocele, and cleft palate.

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