Answer
Yes. It can make several hormonal contraceptives less effective, so contraception should be reviewed with a clinician or pharmacist.
Sources for this answer
- NHSNHS · NHS medicine guidance
- Carbamazepine 400 mg Prolonged-release Tablets — Current selected SmPCemc · Summary of Product Characteristics
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.