Tell your doctor about all your current medicines and any you start or stop using, especially:
amantadine;
zonisamide;
cough medicine that contains dextromethorphan (Delsym, Robitussin Maximum Strength, Vicks 44, and others);
medicines to make the urine alkaline--urine sodium bicarbonate, potassium citrate (K-Lyte, Urocit-K), sodium citrate and citric acid (Bicitra, Oracit), or sodium citrate and potassium (Citrolith, Polycitra); or
medicine to treat glaucoma or increased pressure inside the eyes--acetazolamide, methazolamide.
This list is not complete. Other drugs may interact with memantine, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible interactions are listed in this medication guide.
 Memantine drug interactions (more detail)
