A 37-year-old member asked:
any insights on how long it takes for tri-sprintec to actually become effective?
1 doctor answer
Dr. Herb Coussons answered
28 years experience Obstetrics and Gynecology
One week: I assume you mean for contraception. There are other reasons to take a birth control pill, but they work to prevent pregnancy by preventing ovulation. It takes about one week to reliably prevent ovulation or to avoid pregnancy from recent ovulation. If you want to be more sure of prevention start the pill with a menstrual cycle and it is reliable as your cycle is ending.
Answered on Oct 4, 2016
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