A member asked:

How long does a septra (sulfamethoxazole and trimethoprim) rash last?

A doctor has provided 1 answer

1 week or so: Depending on the severity it can last a couple days to 10-14 days but usually less ...Depends on how long you took the med and when you stopped it in relation to the onset of the rash.

Answered 10/3/2016

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Is it dangerous to mix alcohol and septra (sulfamethoxazole and trimethoprim)?

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