Prescribing-label excerpts
Mupirocin
Reference for: Mupirocin. Source presentation: ointment. Source route: topical.
Mechanism of action
Mupirocin is an RNA synthetase inhibitor antibacterial [ see Microbiology (12.4)].
Pharmacokinetics
Absorption — Application of 14C-labeled mupirocin ointment to the lower arm of normal male subjects followed by occlusion for 24 hours showed no measurable systemic absorption (less than 1.1 nanogram mupirocin per milliliter of whole blood). Measurable radioactivity was present in the stratum corneum of these subjects 72 hours after application.
The effect of the concurrent application of mupirocin ointment with other topical products has not been studied [ see Dosage and Administration (2)].
Elimination — In a trial conducted in 7 healthy adult male subjects, the elimination half-life after intravenous administration of mupirocin was 20 to 40 minutes for mupirocin and 30 to 80 minutes for monic acid.
Metabolism: Following intravenous or oral administration, mupirocin is rapidly metabolized.
The principal metabolite, monic acid, demonstrates no antibacterial activity.
Excretion: Monic acid is predominantly eliminated by renal excretion.
Selected passages from the cited U.S. prescribing label. The studies concern the source product and populations named in each passage; they do not establish Walter-product bioequivalence, an approved indication, or the kinetics of another fixed combination. Tables and the full prescribing information remain available in the source.
Source: DailyMed: Mupirocin — ointment
Reference accessed . Label revision: 2026-08-20.
