Irbesartan is a medication primarily used to treat high blood pressure, also known as hypertension. It belongs to a class of drugs called angiotensin II receptor blockers (ARBs), which work by relaxing blood vessels, making it easier for the heart to pump blood. This helps lower blood pressure and reduces the risk of heart-related complications. In addition to managing hypertension, irbesartan is also prescribed to protect the kidneys in patients with type 2 diabetes. By controlling blood pressure and reducing strain on the kidneys, it can help prevent kidney damage and improve overall health in individuals with this condition.