Answer
It can lower concentrations of many hormonal contraceptives, so they should not generally be used as the sole contraceptive method; discuss suitable options with the HIV or sexual-health team.
Sources for this answer
- Nevirapine 200mg Tablets — Current selected SmPCemc · Summary of Product Characteristics
- Nevirapine 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.