Adapalene 0.1% and benzoyl peroxide 2.5%: a novel combination for treatment of acne vulgaris.

Topical products commonly used to treat acne include retinoids and antimicrobials, due to their effects on different components of pathogenesis. Accordingly, a fixed combination of adapalene 0.1% and benzoyl peroxide (BPO) 2.5% was developed (Epiduo, Galderma) and was approved by the US FDA in December 2008 for the treatment of acne. The superior efficacy of this combination was demonstrated in 2 large randomized controlled trials. This paper reviews the evidence for efficacy and tolerability of the combination of the retinoid adapalene 0.1% and BPO 2.5%, a once-daily gel formulation for the treatment of acne.