3 doctors weighed in:

How long does it take birth control pill to prevent pregnancy?

3 doctors weighed in
Dr. Nikolaos Zacharias
Obstetrics & Gynecology - Maternal Fetal Medicine
2 doctors agree

In brief: One cycle.

After you finish your first month's packet your ovulation should be suppressed and the risk of pregnancy should be <1-9%.

In brief: One cycle.

After you finish your first month's packet your ovulation should be suppressed and the risk of pregnancy should be <1-9%.
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Dr. Jane Van Dis
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