Drug Guide
Betamethasone Dipropionate
Classification
Therapeutic: Anti-inflammatory, corticosteroid
Pharmacological: Glucocorticoid
FDA Approved Indications
- Inflammatory skin conditions (eczema, psoriasis, dermatitis)
- Itching and swelling associated with these conditions
Mechanism of Action
Betamethasone Dipropionate binds to glucocorticoid receptors, leading to modulation of gene expression that results in anti-inflammatory, immunosuppressive, and antiproliferative effects on skin cells.
Dosage and Administration
Adult: Apply a thin layer to affected skin once daily, as directed by physician.
Pediatric: Use with caution; consult specific guidelines. Usually similar application as adults, but monitor for systemic effects.
Geriatric: Use with caution; reduced clearance may occur, monitor for adverse effects.
Renal Impairment: No specific dosage adjustments necessary.
Hepatic Impairment: No specific dosage adjustments necessary.
Pharmacokinetics
Absorption: Minimal systemic absorption when used topically, but absorption can increase with prolonged use or application to large surface areas.
Distribution: Low plasma protein binding when absorbed systemically.
Metabolism: Metabolized in the liver via hepatic enzymes.
Excretion: Excreted primarily in urine.
Half Life: Approximately 36-54 hours when absorbed systemically.
Contraindications
- Hypersensitivity to betamethasone dipropionate or other corticosteroids.
Precautions
- Use with caution in skin infections, including tuberculosis or fungal infections. Avoid applying to broken or ulcerated skin. Prolonged use may lead to skin atrophy, systemic absorption, and hypothalamic-pituitary-adrenal (HPA) axis suppression.
- Pregnancy category C; use only if potential benefits justify risks. Breastfeeding considerations: small amounts may pass into breast milk.
Adverse Reactions - Common
- Skin itching, burning, irritation (Common)
- Skin atrophy, striae, telangiectasia (Less common)
Adverse Reactions - Serious
- Hypopigmentation, systemic corticosteroid effects (hyperglycemia, Cushingoid features), adrenal suppression (Rare, with extensive or prolonged use)
Drug-Drug Interactions
- Potent CYP3A4 inhibitors (e.g., ketoconazole, ritonavir) may increase systemic corticosteroid levels.
Drug-Food Interactions
N/ADrug-Herb Interactions
N/ANursing Implications
Assessment: Monitor skin condition for improvement or adverse effects. Assess for signs of systemic absorption or HPA suppression during prolonged therapy.
Diagnoses:
- Risk for skin atrophy, infection, or systemic corticosteroid effects.
Implementation: Apply as prescribed, avoid occlusion unless directed. Use the lowest effective dose for the shortest duration.
Evaluation: Verify resolution of skin inflammation, monitor for adverse effects, and adjust therapy accordingly.
Patient/Family Teaching
- Use medication exactly as prescribed. Do not cover the treated area with occlusive bandages unless instructed.
- Report signs of skin thinning, new infections, or systemic symptoms.
- Avoid applying to face, groin, or underarms unless directed.
Special Considerations
Black Box Warnings:
- Prolonged use of topical corticosteroids can lead to systemic absorption resulting in HPA suppression, especially in children.
- Use caution in fragile skin areas.
Genetic Factors: Variations in glucocorticoid receptor sensitivity may affect response.
Lab Test Interference: May increase blood glucose levels during systemic absorption.
Overdose Management
Signs/Symptoms: Features of systemic corticosteroid excess, such as Cushing syndrome, hyperglycemia.
Treatment: Discontinue corticosteroid use gradually to prevent adrenal insufficiency. Supportive therapy as needed.
Storage and Handling
Storage: Store at room temperature, 20-25°C (68-77°F). Keep away from heat and flame.
Stability: Stable until expiration date given on package.