Valsartan is an angiotensin II receptor antagonist used primarily for the treatment of hypertension (high blood pressure) and various cardiovascular conditions. Its chemical structure is characterized by the molecular formula C24H29N5O3 and a molecular weight of approximately 435.5 g/mol. By selectively blocking the angiotensin II receptor subtype 1 (AT1), primarily found in vascular smooth muscle and adrenal glands, valsartan inhibits the vasoconstrictor and aldosterone-secreting effects of angiotensin II.