WARNING: This medicine may cause birth defects, or fetal or newborn death if you take it while you are pregnant. If you think you may be pregnant, contact your doctor right away. If you are planning to become pregnant, talk with your doctor about other treatment options. Some medicines or medical conditions may interact with this medicine. INFORM YOUR DOCTOR OR PHARMACIST of all prescription and over-the-counter medicine that you are taking. DO NOT TAKE THIS MEDICINE if you are taking dofetilide or ketanserin. DO NOT TAKE THIS MEDICINE if you are also taking aliskiren and you have either diabetes or kidney problems. ADDITIONAL MONITORING OF YOUR DOSE OR CONDITION may be needed if you are taking aliskiren, angiotensin-converting enzyme (ACE) inhibitors (eg, ramipril), adrenocorticotropic hormone (ACTH), azole antifungals (eg, itraconazole), barbiturates (eg, phenobarbital), conivaptan, corticosteroids (eg, prednisone), diuretics (eg, furosemide), protease inhibitors (eg, ritonavir, telaprevir), narcotic pain relievers (eg, morphine), sildenafil, other medicines for high blood pressure or heart problems, cholestyramine, colestipol, nonsteroidal anti-inflammatory drugs (NSAIDs) (eg, celecoxib, ibuprofen), diazoxide, digoxin, lithium, potassium-sparing diuretics (eg, triamterene), potassium supplements, simvastatin, or insulin or other diabetes medicines (eg, glipizide, metformin). DO NOT START OR STOP any medicine without doctor or pharmacist approval. Inform your doctor of any other medical conditions, including dehydration; low blood volume; fluid retention (swelling); high or low blood electrolyte levels (eg, sodium, magnesium, potassium, calcium); gallbladder, liver, or kidney problems; asthma; gout or high blood levels of uric acid; lupus; parathyroid gland problems; low blood pressure; blood vessel problems; heart problems (eg, heart failure, angina, narrowing of heart blood vessels); high blood cholesterol or lipid levels; diabetes; allergies; pregnancy or if you are able to become pregnant; or breast-feeding. Tell your doctor if you are vomiting or have diarrhea, are on a low-salt (sodium) diet, have a history of a stroke or heart attack, are on dialysis, have recently had surgery (eg, a certain type of nerve surgery called sympathectomy), or will be having surgery. Tell your doctor if you have never taken a blood pressure medicine before. USE OF THIS MEDICINE IS NOT RECOMMENDED if you are pregnant, if you have severe kidney problems, or if you are unable to urinate. Contact your doctor or pharmacist if you have any questions or concerns about using this medicine.