DRUG INTERACTIONS: Tell your doctor of any medication you may use, especially of: cimetidine, disulfiram, ciprofloxacin, enoxacin, birth control pills, theophylline, water pills (diuretics such as furosemide), other stimulants (adrenaline-like drugs such as phenylpropanolamine). Check the labels on all your medicines (e.g., cough-and-cold products, diet aids) because they may contain ingredients that could increase your heart rate or blood pressure. Ask your pharmacist about the safe use of those products. Avoid drinking large amounts of beverages containing caffeine (coffee, tea, colas) or eating large amounts of chocolate, since guarana contains caffeine. Ask your doctor or pharmacist about the safe use of caffeine-containing products. Cigarette smoking can affect this medication. Tell your doctor if you smoke or if you have recently stopped smoking.

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 agitation, irritability, painful urination, tremors, irregular heartbeat, stomach cramps, vomiting, and seizures.

NOTES: Keep all regular medical and laboratory appointments.

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: Refer to storage information printed on the package. If you have any questions about storage, ask your pharmacist.