By the A2Z RX editorial team · Published October 13, 2026 Quick Q&A: Skin Infection Antibiotics at a Glance Which antibiotics are used to treat skin infections?It depends on the infection and the likely bacteria. Impetigo is often treated with topical mupirocin, cellulitis usually with oral cephalexin, dicloxacillin, or clindamycin, and suspected MRSA with doxycycline or...