Meta-analysis comparing efficacy of antibiotics versus oral contraceptives in acne vulgaris.

Abstract

Both antibiotics and oral contraceptive pills (OCPs) have been found to be effective in managing acne vulgaris. Despite widespread use, few direct comparisons of efficacy between the 2 modalities have been published. We compared the efficacy of antibiotics and OCPs in managing acne. A meta-analysis was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses and Cochrane collaboration guidelines. A review of 226 publications yielded 32 randomized controlled trials that met our inclusion criteria. At 3 and 6 months, compared with placebo, both antibiotics and OCPs effected greater percent reduction in inflammatory, noninflammatory, and total lesions; the 2 modalities at each time point demonstrated statistical parity, except that antibiotics were superior to OCPs in percent reduction of total lesions at 3 months (weighted mean inflammatory lesion reduction: 3-month course of oral antibiotic treatment = 53.2%, 3-month course of OCPs = 35.6%, 3-month course of placebo treatment = 26.4%, 6-month course of oral antibiotic treatment = 57.9%, 6-month course of OCPs = 61.9%, 6-month course of placebo treatment = 34.2%; weighted mean noninflammatory lesion reduction: 3-month course of oral antibiotic treatment = 41.9%, 3-month course of OCPs = 32.6%, 3-month course of placebo treatment = 17.1%, 6-month course of oral antibiotic treatment = 56.4%, 6-month course of OCPs = 49.1%, 6-month course of placebo treatment = 23.4%; weighted mean total lesion reduction: 3-month course of oral antibiotic treatment = 48.0%, 3-month course of OCPs = 37.3%, 3-month course of placebo treatment = 24.5%, 6-month course of oral antibiotic treatment = 52.8%, 6-month course of OCPs = 55.0%, 6-month course of placebo treatment = 28.6%). Investigative treatment heterogeneity and publication bias are limitations. Although antibiotics may be superior at 3 months, OCPs are equivalent to antibiotics at 6 months in reducing acne lesions and, thus, may be a better first-line alternative to systemic antibiotics for long-term acne management in women.