DRUG INTERACTIONS: Inform your doctor about all the medicines you use (both prescription and nonprescription) especially of: warfarin, drugs that may increase heart rate or blood pressure such as decongestants or caffeine (decongestants may be found in certain over-the-counter cough-and-cold medicines), digoxin, cholestyramine, oral medicine used for diabetes, birth control pills/estrogen. 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 nervousness, fast heart rate, diarrhea, stomach cramps, trouble sleeping, and weight loss.

NOTES: Lab tests may be done periodically to monitor the effectiveness of this medication.

MISSED DOSE: If you miss a dose, use it as soon as remembered; do not use if it is almost time for the next dose, instead, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up. Call your doctor if you miss 2 or more doses in a row.

STORAGE: Store at room temperature between 59 and 86 degrees F (15 to 30 degrees C) away from sunlight and moisture.