Telmisartan is primarily used to protect the cardiovascular system and kidneys: Hypertension (High Blood Pressure): To lower blood pressure and keep it within a healthy range. Cardiovascular Risk Reduction: To reduce the risk of heart attack or stroke in patients who are at high risk. Kidney Protection: Often prescribed to diabetic patients to prevent or slow down kidney damage (Diabetic Nephropathy). Heart Failure: Sometimes used off-label for patients who cannot tolerate other heart medications like ACE inhibitors.