Antibiotics are different
There are different forms of antibiotics: pills, suspensions, or injections for parenteral administration (intramuscular, intravenous). There are antibiotics working topically. Mupirocin is an antibiotic for external application, one of the best remedies for treatment of skin infections, such as furunculosis, folliculitis, infectious complications in atopy dermatitis, infected wounds, and insignificant burns.
Mupirocin is characterized by significant action against gram-positive microorganisms comparing to other antibiotics and it is used under prescription of the doctor.