DRUG INTERACTIONS: Tell your doctor of all nonprescription and prescription medication you use, especially of: iron, calcium or zinc vitamins or mineral supplements, sucralfate, antacids. Report other drugs which affect the heart rhythm (QTc prolongation), such as: dofetilide, pimozide, quinidine, sotalol, procainamide, "water pills" (diuretics such as furosemide or hydrochlorothiazide). Ask your doctor or pharmacist for more details. Also report the use of drugs that cause drowsiness such as: sleeping pills, sedatives, tranquilizers, anxiety medicines, antihistamines that cause drowsiness (e.g., diphenhydramine), narcotic pain medications (e.g., codeine). 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.

NOTES: This medication has been prescribed for your current condition only. Do not use it later for another infection or give it to someone else. A different medication may be needed in those cases.

MISSED DOSE: If you miss a dose, take 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-up" the dose to catch up.

STORAGE: Store at room temperature between 68 and 77 degrees F (20-25 degrees C) away from light and moisture.

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.