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A member asked:
If i take sulfamethoxazole while on plan b does that make it less effective ?
A doctor has provided 1 answer
Sounds ok: If a person has a good reason to take sulfamethoxazole, is not allergic to it, and is not having vomiting or diarrhea, the sulfamethoxazole should work just as well, whether or not Plan B is taken. Also, if she has a good reason to take Plan B, and is not having vomiting or diarrhea, the Plan B should work normally, regardless of her use of antibiotics. She should do a pregnancy test in 3 weeks.
Answered 8/6/2017
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