Human research on a combination · n=90
A retrospective assessment and comparison of the effectiveness of benzoyl peroxide; the combination of topical niacinamide, gallic acid, and lauric acid; and the combination of benzoyl peroxide and erythromycin in acne vulgaris.
Dermatologic therapy · 2020
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Three-active formulation improved acne severity over eight weeks, as did benzoyl-peroxide comparison treatments. Title calls study retrospective while abstract says random division. Design recorded unknown. Mixture effect, no isolated gallic-acid benefit and no inactive vehicle.
Checked against the published abstract on Oct 1, 2026. Source 1 ↗Source 2 ↗
Abstract
Acne vulgaris is a chronic inflammatory skin disease that mostly develops during adolescence and continues throughout adulthood. It affects the face, the main location of cosmetic appearance. Despite many developments in acne treatment, various combination therapies are needed to create the best option. Ninety patients were included in this study. We used the global acne grading system (GAGS) and the lesion counting and photographic standards that were used by Hayashi et al., to assess acne severity. The patients were randomly divided into three groups as group 1 (using only 5% BPO, twice a day), group 2 (using only the combination of 5% BPO + 3% erythromycin, twice a day), and group 3 (using only the combination of 4% niacinamide + 1% gallic acid + 1% lauric acid, twice a day). Thirty patients were included in each group. The scores were evaluated at weeks 0, 2, 4 and 8, and compared with each other. As a result of the study, all three treatment types were found to be effective. The combination of 4% niacinamide + 1% gallic acid + 1% lauric acid can be used as an alternative topical treatment for acne vulgaris to prevent resistance against topical antibiotics and the side effects of some other treatments.
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