Telmisartan is used alone or together with other medicines to treat high blood pressure (hypertension). High blood pressure adds to the workload of the heart and arteries. If it continues for a long time, the heart and arteries may not function properly. This can damage the blood vessels of the brain, heart, and kidneys, resulting in a stroke, heart failure, or kidney failure. Lowering blood pressure can reduce the risk of strokes and heart attacks. Telmisartan is also used to lower the risk of heart attacks or stroke in patients 55 years of age and older who have diabetes or heart problems. Only use this medicine if your doctor has prescribed them for you.