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.
OVERDOSE: If overdose is suspected, contact your local poison control center or emergency room immediately. US residents can call the US national poison hotline at 1-800-222-1222. Canadian residents should call their local poison control center directly. Symptoms of overdose may include: severe drowsiness or coma, seizures, irregular heartbeat.
NOTES: Do not share this medication with others. Laboratory and/or medical tests (e.g., blood counts, liver function tests) may be performed to monitor your progress or side effects.
MISSED DOSE: If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not double the dose to catch up.
STORAGE: Store at room temperature between 59 and 86 degrees F (15 and 30 degrees C) away from light and moisture.
Last Editorial Review: 3/2/2005
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