Answer
Yes. It can increase antimuscarinic adverse effects and alter the absorption or action of medicines including ketoconazole, digoxin, levodopa, metoclopramide and sublingual nitrates.
Sources for this answer
- Pro-Banthine 15 mg tablets — 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.