Neomycin: Neosporin contains bacitracin, polymyxin and neomycin. Polysporin (bacitracin and polymyxin) contains just the first 2 of these. Neomycin is a common allergan so many people react with a contact allergy dermatitis to neosporin.
Answered 1/27/2019
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A doctor has provided 1 answer
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