Answer
It may reduce the effectiveness of some hormonal methods. Anyone who could become pregnant needs a contraception review under the Pregnancy Prevention Programme.
Sources for this answer
- Topiramate Rosemont 10mg/ml Oral Suspension — Current selected SmPCemc · Summary of Product Characteristics
- UK GovernmentUK Government · Reputable Web
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.