Eprosartan Mesylate is primarily used in the treatment of high blood pressure (hypertension). It works by blocking the action of angiotensin II, a substance in the body that causes blood vessels to tighten, thereby relaxing the blood vessels and allowing blood to flow more smoothly. This helps to lower blood pressure and reduces the risk of strokes, heart attacks, and kidney problems. It is often prescribed when patients do not respond well to other antihypertensive medications or as part of a combination therapy. Additionally, it may be used in patients with type 2 diabetes and hypertension to help protect kidney function. It is typically taken orally, and the dosage is adjusted based on the patient’s response and medical condition.