Acnerid gel 
Clindamycin 1% Nicotinamide% w/w
Topical clindamycin 0.1% w/w is approved for the treatment of acne vulgaris by F.D.A ( U.S.A)
 Distinct advatages over Erythromycin
Destroys Propionibacterium acne.... acne causing pathogens 
Decreases free fatty acids on the skin surface 
Significantly reduces inflammatory acne lesions and open comedons