Answer
It may reduce the effectiveness of some progestogen-containing hormonal contraceptives at higher prescribed strengths. A prescriber or contraception specialist can advise whether an additional non-hormonal method is needed.
Sources for this answer
- Perampanel G.L. Pharma 2 mg film-coated 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.