Answer
Yes. Its active metabolite, phenytoin, can reduce the effectiveness of hormonal contraceptives. Discuss an effective alternative method with your clinician.
Sources for this answer
- Pro-Epanutin Concentrate for Infusion / Solution for Injection — 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.