Adapalene is a third-generation synthetic topical retinoid-like compound, structurally related to retinoic acid. It is a selective modulator of retinoic acid receptors (RAR-β and RAR-γ). It is a mainstay in the topical treatment of mild to moderate acne vulgaris in the Indian population, valued for its efficacy, favorable tolerability profile compared to older retinoids, and photostability.
Adult: Apply a thin film once daily, in the evening, to clean, dry affected areas of the skin.
Note: Wash face with a mild, non-medicated cleanser and pat dry. Wait 20-30 minutes for skin to dry completely. Apply a pea-sized amount for the entire face, avoiding eyes, lips, nostrils, and mucous membranes. Use fingertips to spread gently. Do not apply to unaffected skin. Wash hands after application.
Adapalene binds to specific nuclear retinoic acid receptors (RAR-β and RAR-γ) within keratinocytes and sebocytes. This binding modulates gene transcription, leading to normalization of follicular keratinization (reducing microcomedone formation), anti-inflammatory effects, and comedolysis.
Pregnancy: Category C. Animal studies have shown fetal abnormalities (retinoid effects). No adequate and well-controlled studies in pregnant women. Use only if the potential benefit justifies the potential risk to the fetus. Topical application results in minimal systemic absorption, but caution is advised.
Driving: No effect. A topical agent with no CNS activity.
| Other Topical Retinoids (Tretinoin, Tazarotene) | Increased risk of severe local irritation and dryness. | Major |
| Topical Benzoyl Peroxide | Can be used concurrently but may increase drying effect. Some fixed-dose combinations exist (e.g., Adapalene 0.1% + Benzoyl Peroxide 2.5%). | Moderate |
| Topical Salicylic Acid, Sulfur, Resorcinol, Alcohol-based products | Potential for excessive irritation and dryness. | Moderate |
| Photosensitizing Drugs (e.g., Tetracyclines, Fluoroquinolones, Thiazides) | Theoretical increased risk of photosensitivity; use sun protection diligently. | Moderate |