Answer
Sedation is not an expected pharmacological effect and ondansetron generally has negligible influence on driving, but dizziness or visual disturbance can occur, particularly after intravenous administration.
Sources for this answer
- Ondansetron 2 mg/ml solution for injection/infusion — 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.