DRUG INTERACTIONS: Tell your doctor of all prescription and nonprescription medication you may use, especially: drugs used to treat diarrhea (e.g., loperamide, diphenoxylate), benztropine, certain drugs to help the stomach (e.g., anticholinergics such as belladonna, clidinium, dicyclomine, or hyoscyamine), motion sickness medication (e.g., scopolamine). Tell your doctor if you take any drugs that cause drowsiness such as: medicine for sleep (e.g., sedatives), tranquilizers, anti-anxiety drugs (e.g., diazepam), narcotic pain relievers (e.g., codeine), other psychiatric medicines (e.g., phenothiazines such as chlorpromazine or tricyclic antidepressants such as amitriptyline), anti-seizure drugs (e.g., carbamazepine), muscle relaxants, antihistamines that cause drowsiness (e.g., diphenhydramine). Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain drowsiness-causing ingredients. Ask your pharmacist about the safe use of these products. Also, report drugs that affect the heart rhythm (QTc prolongation), such as: dofetilide, pimozide, sotalol, quinidine, procainamide, sparfloxacin. Ask your doctor or pharmacist for more details. Do not start or stop any medicine without doctor or pharmacist approval.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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