A member asked:

Does tri-sprintec work since the first day you take the pill?

A doctor has provided 1 answer
Dr. Jeff Livingston answered

Specializes in Obstetrics and Gynecology

1-2 weeks : It takes 1-2 weeks for birth control pills to be effective. Use condoms until then.

Answered 3/8/2013

5.3k views

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