Memogen Memantine Hydrochloride Procainamide Hydrochloride
MajorMemantine (Dementa XR) should not be taken with procainamide. The leaflet lists it alongside amantadine, ketamine, dextromethorphan, phenytoin, cimetidine, ranitidine, quinidine, quinine and nicotine as medicines to avoid.
These medicines can affect each other in a serious way. Do not start taking them together unless your doctor has said it is OK. If you already take both, do not stop either one on your own: speak to your doctor or pharmacist soon.