ABX and BC: Some antibiotics effect birth control pills, shots and implants. Mostly Rifampin but to some degree the penicillin drugs, the cyclines, Metronidazole and nitrofurantoin. It is best to use secondary means of birth control while taking antibiotics and for a week after to avoid the small increaed risk of pregnancy.
Answered 7/1/2014
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A doctor has provided 1 answer
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