Answer
The selected product information says not to drive or operate machinery for at least 24 hours, and never while drowsy or otherwise impaired.
Sources for this answer
- Alfentanil Kalceks — Current selected SmPCemc · Summary of Product Characteristics
- Alfentanil 500 micrograms/ml solution for injection — 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.