PRECAUTIONS: Tell your doctor if you have: blood disorders, heart disease, ulcers, kidney disease, high blood pressure, an over- active thyroid, glaucoma, prostate trouble, depression, seizure, disorders, a history of substance abuse, allergies (especially drug allergies). Use caution performing tasks requiring alertness if this medication causes you to feel drowsy. Avoid intake of alcoholic beverages while taking this medication since excessive sedation can occur. This medication is not recommended for use during pregnancy. Consult your doctor before using this medication. This medication passes into breast milk and may have undesirable effects on a nursing infant. 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 depression, sedatives, tranquilizers, sleeping pills, cimetidine, erythromycin, asthma medication, narcotic pain medications (e.g., codeine). This drug may interfere with the effectiveness of birth control pills. Discuss using other methods of birth control with your doctor. Cigarette smoking affects the potency of this medication. It is important for your doctor to know if you smoke. Also notify your doctor if you start or stop smoking while taking this medication since a dose adjustment may be necessary. Avoid drinking caffeine-containing beverages (coffee, tea, colas) and eating large amounts of chocolate. Caffeine is similar to the active ingredient in this medication thus the risk of side effects may be increased. 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 nausea; vomiting; headache; chills; slowed or fast breathing; difficulty breathing; fast or irregular heartbeat; unusual nervousness or restlessness; agitation; irritability; cold, clammy skin; change in pupil size; deep sleep; seizures; and loss of consciousness.

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. Need help identifying pills and medications? Use the pill identifier tool on RxList.