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Birth Control & Women's Health

What Happens If You Take Two Birth Control Pills in One Day?

Faith Coleman

Medically reviewed by Faith Coleman, University of New Mexico School of Medicine on August 22nd, 2026.

Taking two birth control pills in one day typically won't cause serious harm but may increase side effects. This could happen if you missed a pill the day before and need to take a makeup dose, or if you accidentally took an extra pill. Common side effects include nausea, breakthrough bleeding, breast tenderness, and headaches. The extra hormones can potentially cause irregular bleeding for a few days. If you took two pills by mistake, continue your regular schedule the next day and don't skip any pills. Use an additional method of contraception, such as condoms, until you start your next pill cycle. Birth control pills are less effective when not used exactly as directed. Contact your healthcare provider if you experience severe nausea, persistent bleeding, or other concerning symptoms lasting more than 24-48 hours.

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