Tell your doctor if you have a history of: heart disease or heart arrhythmias (abnormal rhythms), hallucinations, mental confusion, difficulty walking, any allergies, kidney problems, liver disease, low blood pressure. To avoid dizziness and lightheadedness when rising from a seated or lying position, get up slowly. Use caution when performing tasks requiring mental alertness such as driving or using machinery. Limit alcohol use because it may intensify the drowsiness and dizziness effects of this drug. This drug should be used only when clearly needed during pregnancy. Discuss the risks and benefits with your doctor. It is not known if this medication is excreted into breast milk. Consult your doctor before breast-feeding.

Nausea, dizziness, drowsiness, trouble sleeping, constipation, unusual weakness, stomach upset and pain, headache or dry mouth may occur. If these effects persist or worsen, notify your doctor promptly. To relieve dry mouth, suck on (sugarless) hard candy or ice chips, chew (sugarless) gum, drink water or use saliva substitute. Report promptly: hallucinations, difficulty moving or walking, difficulty breathing. Unlikely but report promptly: confusion, restlessness, leg or foot swelling, fainting, twitching, chest pain, unusually fast or slow heartbeat. Very unlikely but report promptly: muscle pain, vision problems, fever, severe muscle stiffness, sudden irresistible urge to sleep. If you notice other effects not listed above, contact your doctor or pharmacist.

Do not share this medication with others.