Answer
Only if sleepiness is adequately controlled and the medicine is not causing dizziness, blurred vision or impaired reactions. Narcolepsy itself must be reported to the DVLA.
Sources for this answer
- Modafinil 200mg tablets — 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.