Olmesartan is primarily used in the treatment of high blood pressure (hypertension). It helps to relax blood vessels, allowing blood to flow more smoothly and the heart to pump more efficiently. This medication is often prescribed to reduce the risk of strokes, heart attacks, and kidney problems caused by high blood pressure. It is typically taken orally as a tablet and can be used alone or in combination with other antihypertensive drugs. Olmesartan is suitable for long-term management of hypertension and is known for its effectiveness in controlling blood pressure with once-daily dosing. Patients are usually advised to follow a healthy lifestyle, including a balanced diet and regular exercise, while using this medication for optimal results.