The efficacy and safety of a combination benzoyl peroxide/clindamycin topical gel compared with benzoyl peroxide alone and a benzoyl peroxide/erythromycin combination product.
BACKGROUND
Topical clindamycin and benzoyl peroxide have each demonstrated clinical efficacy in the treatment of acne vulgaris. When used in tandem, they promise greater efficacy than either individual agent through their antibacterial and anti-inflammatory effects.


OBJECTIVE
To determine the efficacy and safety of combination benzoyl peroxide/ clindamycin compared with benzoyl peroxide or benzoyl peroxide/erythromycin in the treatment of acne.


METHODS
In this randomized, 10-week, multicenter, single-blind trial, 492 patients with moderate to moderately severe acne were treated twice daily with 5% benzoyl peroxide/1% clindamycin, 5% benzoyl peroxide, or 5% benzoyl peroxide/3% erythromycin and assessed every 2 weeks.


RESULTS
Compared with benzoyl peroxide, benzoyl peroxide/clindamycin demonstrated significantly greater reductions in inflammatory lesions (p = 0.04) and significantly greater overall improvement as assessed by physicians (p < or = 0.04) and patients (p < 0.001). Benzoyl peroxide/clindamycin demonstrated a nonsignificant trend for greater efficacy compared to benzoyl peroxide/erythromycin. Dry skin was the most frequent (< or = 7.3%) adverse event with all three therapies.


CONCLUSIONS
Benzoyl peroxide/clindamycin demonstrated improved efficacy and similar tolerability; to benzoyl peroxide used alone and was similar to benzoyl peroxide/ erythromycin, making this combination product an effective alternative antimicrobial therapy for acne.
University of Pennsylvania Health System, Philadelphia, USA.
J J
JJ
Leyden
J G
JG
Hickman
M T
MT
Jarratt
D M
DM
Stewart
S F
SF
Levy
D000152:Acne Vulgaris / Q000188:drug therapy*; D000287:Administration, Topical; D000293:Adolescent; D000900:Anti-Bacterial Agents / Q000008:administration & dosage*; D001585:Benzoyl Peroxide / Q000008:administration & dosage*; D002981:Clindamycin / Q000008:administration & dosage*; D004338:Drug Combinations; D004917:Erythromycin / Q000008:administration & dosage*; D005260:Female; D005782:Gels; D006801:Humans; D008297:Male; D016037:Single-Blind Method
D000900:Anti-Bacterial Agents; D004338:Drug Combinations; D005782:Gels; D002981:Clindamycin; D004917:Erythromycin; D001585:Benzoyl Peroxide