A member asked:

How long do i have to take birth control for it to be effective to prevent against pregnancy? does this go for every brand or birth control?

A doctor has provided 1 answer

1 cycle: To be on the safe side you should be on birth control pills for 1 cycle before you can count it to prevent pregnancy. Don't forget that it's a good idea to continue using condoms always to prevent std's.

Answered 4/22/2014

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