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A member asked:
Does cephalexin affect sprintec birth control pills?
3 doctors weighed in across 2 answers
No risk, no worry: It's an outdated urban myth that antibiotics interfere with effectiveness of birth control pills. They do not, except occasionally with rifampin, an infrequently used antibiotic for certain infections like tuberculosis. Lamisil (terbinafine) certainly has no effect. See https://www.drugs.com/article/antibiotics-and-birth-control.html
Answered 9/8/2016
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