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Study of the efficacy, tolerability, and safety of 2 fixed-dose combination gels in the management of acne vulgaris.

Author(s): Zouboulis CC, Fischer TC, Wohlrab J, Barnard J, Alio AB

Affiliation(s): Department of Dermatology, Dessau Medical Center, Auenweg 38, 06847 Dessau, Germany. christos.zouboulis@klinikum-dessau.de

Publication date & source: 2009-10, Cutis., 84(4):223-9.

Publication type: Comparative Study; Multicenter Study; Randomized Controlled Trial; Research Support, Non-U.S. Gov't

This study investigated the efficacy, tolerability, and safety of 2 fixed-dose combination gels for the treatment of facial acne: clindamycin 1%-benzoyl peroxide 5% gel with hydrating excipients (C/BPO HE) and adapalene 0.1%-benzoyl peroxide 25% gel (A/BPO). After 12 weeks of once daily treatment, the mean reduction in inflammatory lesion count was 76.8% and 72.2% in the C/BPO HE group and A/BPO group, respectively (P = .076). Significantly more participants achieved treatment success, which was defined as an improvement of 2 grades or more from baseline to week 12 on the investigator's static global assessment (ISGA) scale, with C/BPO HE (30.5% [58/190]) compared with A/BPO (21.8% [42/192]) (P = .046), and treatment success was achieved more quickly with C/BPO HE (P = .035). Both products also reduced noninflammatory (62.2% C/BPO HE vs 6 1.5% A/BPO) and total lesion counts (69.1% C/BPO HE vs 67.1% A/BPO). Despite the overall similar efficacy profile, C/BPO HE was better tolerated and safer than A/BPO. In the tolerability assessments, erythema, dryness, peeling, pruritus, and burning/ stinging were more frequent in the A/BPO group at all time points from week 1 onward (P < .05). Treatment-related adverse events (AEs) occurred in 48.4% (92/190) of participants in the C/BPO HE group compared with 78.6% (151/192) of the A/BPO group. We conclude that C/BPO HE and A/BPO have similar efficacy in treating inflammatory and noninflammatory acne lesions, but C/BPO HE achieves better overall treatment success in less time coupled with a significantly better tolerability profile and notably better safety profile.

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