Bactroban is a topical antibiotic ointment that contains the active ingredient mupirocin. It is primarily used to treat skin infections caused by certain bacteria, such as Staphylococcus aureus and Streptococcus pyogenes. Bactroban works by inhibiting bacterial protein synthesis, effectively stopping the growth of the bacteria. This medication is commonly prescribed for conditions like impetigo and infected wounds. It is applied directly to the affected area, usually three times a day for up to ten days. Patients should follow their healthcare provider's instructions and avoid using it on large areas of skin or for prolonged periods.