Fucidin
Fucidin contains fusidic acid, a potent antibacterial agent. Fusidic acid and its salts show fat and water solubility and strong surface activity, and exhibit an unusual ability to penetrate intact skin. Concentrations of 0.03–0.12mcg fusidic acid per ml inhibit nearly all strains of Staphylococcus aureus. Topical application is also effective against streptococci, corynebacteria, niesseria and certain clostridia