A member asked:

Will bactrim (sulfamethoxazole and trimethoprim) antibiotic cause plan b to be less effective even if i took it tuesday (11 am) and bactrim (sulfamethoxazole and trimethoprim) thursday (7 pm). yes or no ?

A doctor has provided 1 answer

NO: The affect of antibiotics, especially tetracyclines, has been studied as to effect on absorption of birth control hormones. Except for rifampin, they are compatible Relax.

Answered 5/31/2015

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