Atacand is an angiotensin receptor blocker, or ARB, typically used for treating high blood pressure (hypertension), which helps prevent strokes, and for treating kidney problems. Atacand is also used to treat heart failure and works by relaxing blood vessels and lowering blood pressure to improve blood flow. Atacand can be used alone or in combination with other medications proven to treat high blood pressure and congestive heart failure. Atacand requires a prescription and may be prescribed for other uses. Be sure to ask your doctor or pharmacist for more information.