People shouldn't use the antibiotic ointment Neosporin inside the nose unless a doctor recommends it, states WebMD. A physician may direct a patient to swab Neosporin inside the nose twice a day for 10 days to help prevent recurring nosebleeds, states ENT Specialists of Salt Lake City.
Attempting to forestall illness by coating the nostrils with Neosporin to prevent germs from entering through the nose is not effective, states Harvard specialist John Sharp, M.D., quoted by Glamour magazine. During the process of breathing, germs still enter the nose, even through an antiobiotic ointment. Some people are allergic to the active ingredient in Neosporin, adds Glamour, so using Neosporin both on the skin and in the nose is contraindicated for those people.