DRUG INTERACTIONS: Tell your doctor of all nonprescription and prescription medication you may use, especially of: diuretics (e.g., amiloride, spironolactone, triamterene), potassium supplements, other blood pressure medications (e.g., propranolol), digoxin, trimethoprim-containing medications (e.g., sulfamethoxazole/trimethoprim), certain psychiatric medications (e.g., lithium), certain anti-seizure drugs (e.g., carbamazepine), cimetidine, cyclosporine, drugs for irregular heartbeats (antiarrhythmics) such as disopyramide or quinidine, aspirin-like pain drugs (e.g., ibuprofen), drugs for sleep (e.g., triazolam), sedatives, tranquilizers, drugs for anxiety (e.g., diazepam), narcotic pain relievers (e.g., codeine), certain antihistamines (e.g., diphenhydramine), St John's wort. 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 dizziness, weakness, slowed or irregular heartbeat, nausea, drowsiness, confusion, and slurred speech.

NOTES: Do not share this medication with others. Medical tests may be taken to monitor side effects and effectiveness of this product.

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 the dose to catch up.

STORAGE: Store at room temperature between 59 and 86 degrees F (15-30 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.