Mutrum 2% Ointment – Mupirocin for Skin Infections TreatmentMutrum Mupirocin 2% Ointment Topical Antibiotic for Bacterial Skin Infections Rx For use under physician supervision only. Mutrum 2% Ointment by Horizon Pharmaceuticals contains mupirocin, a topical antibiotic that inhibits bacterial isoleucyl tRNA synthetase, halting protein synthesis in Staphylococcus aureus, Streptococcus pyogenes and MRSA. It is indicated for impetigo, infected eczema, secondary bacterial skin infections and nasal decolonisation