Answer
Do not drive if it causes sleepiness, dizziness, blurred vision, poor coordination or impaired judgement. A medical defence under UK drug-driving rules applies only when it was prescribed, taken as directed and did not impair driving.
Sources for this answer
- UK GovernmentUK Government · Reputable Web
- 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.