Answer
Pregnancy data are limited and mexiletine crosses the placenta. Avoidance is preferred as a precaution, with specialist review for pregnancy planning or exposure.
Sources for this answer
- Namuscla 83 mg hard capsules — Current selected SmPCemc · Summary of Product Characteristics
- NHSNHS · NHS medicine guidance
General medicine information. Follow the instructions for your own medicine and speak to a pharmacist or clinician about your individual circumstances.