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Efficacy and safety of azelaic acid and glycolic acid combination therapy compared with tretinoin therapy for acne.

Author(s): Spellman MC, Pincus SH

Affiliation(s): University of California at San Diego and VA Medical Center, USA.

Publication date & source: 1998-07, Clin Ther., 20(4):711-21.

Publication type: Clinical Trial; Multicenter Study; Randomized Controlled Trial

We conducted a 12-week, multicenter, randomized, double-masked, parallel-group study of the efficacy, safety, and tolerability of azelaic acid 20% cream and glycolic acid lotion compared with tretinoin 0.025% cream and a vehicle lotion to treat mild-to-moderate facial acne vulgaris. Patients treated with azelaic/glycolic acid experienced a significantly greater reduction in the number of papules, as well as a greater reduction in the number of inflammatory lesions, than those treated with tretinoin. Overall global improvement was approximately 25% in both groups. In the physician evaluations, treatment with azelaic/glycolic acid was found to cause significantly less dryness, scaling, and erythema than tretinoin. Patients also reported significantly less dryness, redness, and peeling with azelaic/glycolic acid. Significantly more patients in the azelaic/glycolic acid group than the tretinoin group reported that they felt attractive. The combination of azelaic acid and glycolic acid is a useful alternative to tretinoin, being at least as efficacious as the latter, while offering a superior tolerability and patient approval profile.

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