A member asked:

How long after taking antibiotic does birth control pill resume its effectiveness?

A doctor has provided 1 answer

Next pack: If a woman needs to take antibiotics while on birth control pills it is recommended she use a back up method such as condoms during the time she is on the antibiotics, and to be sure use, for the rest of the pack. That is because antibiotics can make some bcp less effective at preventing pregnancy. By the time the next pack is started effectiveness is back.

Answered 9/2/2013

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