PRECAUTIONS: Tell your doctor your medical history, especially of: stomach or intestinal problems (e.g., ulcers, bleeding), eating disorders (e.g., anorexia nervosa), heart problems (e.g., sick sinus syndrome), lung problems (e.g., asthma, obstructive pulmonary disease), seizures, urinary tract problems (e.g., obstruction), allergies (especially drug allergies). This drug may make you dizzy or drowsy; use caution engaging in activities requiring alertness such as driving or using machinery. Avoid alcoholic beverages. This medication should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. It is not known if this medication passes into breast milk. Consult your doctor before breast-feeding.

DRUG INTERACTIONS: Tell your doctor of all prescription and nonprescription drugs you may use, especially of: anticholinergic drugs (e.g., tolterodine, atropine, scopolamine, benztropine, diphenhydramine), NSAIDs (e.g., ibuprofen, naproxen), succinylcholine, neostigmine, bethanechol. 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 nausea, dizziness, or weakness; increased sweating or salivation; trouble breathing, seizures, or unusually slow heart rate.

NOTES: Do not share this medication with others. Laboratory and/or medical tests (e.g., blood in feces) may be performed to monitor your progress.

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.