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Can polysporin treat a cold sore? I can't find my abreva so I'm just wondering!

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My grandmother used to use a dab of mustard on her cold sores, which kills the virus and dries it right up. You could try it.

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I will try
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oarkergreatdane

No. Polysporin is to treat a bacterial infection while a cold sore (herpes) is a virus.

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