Used primarily in the management of hypertension (high blood pressure). It works by blocking the action of angiotensin II, a substance that causes blood vessels to narrow, thereby allowing blood vessels to relax and blood pressure to decrease. This reduces the risk of cardiovascular events such as heart attacks and strokes. It is often prescribed when other antihypertensive medications do not provide sufficient control. The drug is taken orally, usually once daily, and may be used alone or in combination with other blood pressure-lowering agents like diuretics or calcium channel blockers. Its long duration of action helps maintain consistent blood pressure control throughout the day.