PRECAUTIONS: Tell your doctor if you have: kidney problems, heart disease, liver disease, Addison's disease, high blood pressure, allergies (especially drug allergies), a sodium (salt) restricted diet (this drug contains sodium). 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: lithium, chlorpropamide, methotrexate, aspirin, water pills, heart or blood medication, methenamine, tetracyclines (including doxycycline and minocycline). 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 listlessness, weakness, confusion, and tingling in arms or legs.

NOTES: While taking this medication, it may be necessary for you to test the pH (acidity) of your urine using special paper. The pH will help determine the proper dose.

MISSED DOSE: If you miss a dose, take it as soon as remembered; do not take it if it is near the 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.

STORAGE: The tablets should be stored at room temperature between 59 and 86 degrees F (15 TO 30 degrees C).

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.