Diovan HCT combines valsartan (an ARB) with hydrochlorothiazide (a diuretic) to provide dual-action blood pressure control. This drug is used to treat high blood pressure (hypertension) or heart failure. Available in 80/12.5mg, 160/12.5mg, and 160/25mg tablets, this prescription medication blocks angiotensin II receptors while promoting fluid elimination for enhanced hypertension management.