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CARBAMAZEPINE AND CONTRACEPTIVES

Medical Diagnosis and Drugs, Medications
Combined hormonal contraceptives, progestogen-only pills and emergency hormonal contraceptives are less reliable during treatment with carbamazepine. Breakthrough bleeding and spotting can take place and unintended pregnancies have occurred. Controlled studies have shown that carbamazepine can reduce contraceptive steroid levels.
Because of the consequences of an unwanted pregnancy, especially with drugs that may cause foetal abnormalities, adjustments should be made. For general advice on the use of enzyme inducers, such as carbamazepine, and contraceptives, see contraceptives
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