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A 25-year-old male asked:

Is it true that bacitracin polymyxin b works on pseudomonas aeruginosa? does that mean neosporin or a store brand equivalent can help treat a minor infection found from a bacterial swab test? if so, how many times per day do i apply it and bandage?

1 doctor answer1 doctor weighed in
Dr. Amy Edwards
Pediatric Infectious Disease 15 years experience
Yes polymyxin b does have activity against pseudomonas. Bacitracin has activity against other skin bacteria such as staph. This makes neosporin or the equivalent store brand a good option for minor skin infections. If the wound is clean and doesn’t appear infected (not red, hot, swollen) then just washing it with soap and water should be fine. If infected then apply 3 x per day. Leave open some
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Last updated Sep 22, 2021

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