SIDE EFFECTS: Drowsiness, dizziness, lightheadedness, headache, stomach upset or blurred vision may occur the first several days as your body adjusts to the medication. Other common side effects reported include cough, decreased sexual desire, trouble sleeping, reduced concentration, altered taste, dry skin and muscle aches. If any of these effects continue or worsen, notify your doctor immediately. Notify your doctor if you develop: chest pain, skin rash, breathing trouble, mental confusion, trouble urinating, fever, sore throat, easy bruising or bleeding. Tell your doctor immediately if any of these highly unlikely but very serious side effects occur: fainting, irregular heartbeat. If you notice other effects not listed above, contact your doctor or pharmacist.
PRECAUTIONS: Tell your doctor if you have: kidney problems, heart disease, lung disease such as asthma or emphysema, thyroid disease, diabetes, allergies (especially drug allergies). To avoid dizziness and lightheadedness when rising from a seated or lying position, get up slowly. Also limit your intake of alcoholic beverages which will aggravate these effects. Use caution performing tasks requiring alertness if this medication causes you to feel drowsy or dizzy. This medication should be used only if clearly needed during pregnancy. Discuss the risks and benefits with your doctor. Since small amounts of this medication are found in breast milk, consult your doctor before breast-feeding.
DRUG INTERACTIONS: Tell your doctor of any over-the-counter or prescription medication you may take including: medication for blood pressure (e.g., clonidine), anti-diabetic drugs, calcium channel blockers (e.g., verapamil, diltiazem), St John's wort, arbutamine, aspirin/NSAIDS (e.g., ibuprofen, naproxen). Report other drugs which affect the heart rhythm (QTc prolongation), such as: dofetilide, pimozide, quinidine, procainamide, sparfloxacin, "water pills" (diuretics such as furosemide or hydrochlorothiazide). Ask your doctor or pharmacist for more details. Do not take any over-the-counter medication for allergies or cough or colds without consulting your doctor or pharmacists. Many of the products contain ingredients which may interact with this medication's effects. 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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