Tag: breakthrough bleeding on pill

Carbamazepine and Oral Contraceptives: Why Breakthrough Bleeding Means Contraceptive Failure

Carbamazepine and Oral Contraceptives: Why Breakthrough Bleeding Means Contraceptive Failure

on Feb 11, 2026 - by Tamara Miranda Cerón - 1

Carbamazepine can cut birth control effectiveness by up to 60%, leading to breakthrough bleeding and unplanned pregnancies. Learn why pills fail, what actually works, and how to protect yourself.

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