Answer
Some combinations are unsafe. MAOIs must not be combined with it, while SSRIs and several other antidepressants can increase dextromethorphan exposure or serotonin-syndrome risk. Check with a pharmacist or prescriber first.
Sources for this answer
- Covonia Original Bronchial Balsam 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.