Answer
Yes, particularly with serotonergic medicines or medicines that inhibit CYP2D6 metabolism. Symptoms can include agitation, confusion, fever, muscle rigidity and unstable heart rate or blood pressure.
Sources for this answer
- Benylin Dry Coughs 7.5mg / 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.