Answer
Yes. Sedation and drowsiness are recognised effects, especially early in treatment.
Sources for this answer
- Pericyazine 10mg Tablets — Current selected SmPCemc · Summary of Product Characteristics
- Pericyazine 10mg/5ml Syrup — 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.