Mupirocin is used in a course of 5 days, 3 times/day, applied externally and topically. If there is no good relief or aggravation after five days, then you should go to the hospital for medical treatment. Mupirocin Ointment is an antibacterial drug for topical application, mainly for infections of the skin caused by gram-positive cocci, such as pustules, folliculitis, primary skin infections, co-infections of eczema, and co-infections of superficial wounds not exceeding a certain area. Since the drug is a Class A over-the-counter drug, i.e., it is available in approved shopping malls, patients without the guidance of a doctor or pharmacist can first read the instructions for precautions for use as well as information on usage, dosage, and adverse reactions. If there is no relief after 5 days of use, then you should go to the hospital in time, and there are certain adverse reactions and worsening of symptoms during use. Mupirocin should be used with caution in pregnant and lactating women, and is prohibited in patients who are allergic to mupirocin or allergic to polyethylene glycol ointment.