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A member asked:
What percentage of people get pregnant while on birth control and antibiotics?
A doctor has provided 1 answer
Overhyped...: Contrary to popular belief, most common antibiotics don't seriously affect birth control pills. Rifampin, used to treat Tuberculosis is an exception. Penicillin, amoxicillin, ampicillin, sulfamethoxazole/trimethoprim (Bactrim), tetracycline, metronidazole have a small effect but pregnancy from this is very rare. Best wishes!
Answered 3/30/2016
2.1k views
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