Zupricin B Oint 15Gms used to treat certain skin infections (e.g., impetigo). It is an antibiotic that works by stopping the growth of certain bacteria. ZUPRICIN ointment in Kenya contains Mupirocin; an antibacterial. Applied topically as a 2% ointment, in the treatment of various bacterial skin infections. ZUPRICIN ointment is not suitable for application to mucous membranes.