Benicar HCT (olmesartan and hydrochlorothiazide) is a medication used to treat high blood pressure (hypertension) in adults. By combining an angiotensin II receptor blocker (olmesartan) and a thiazide diuretic (hydrochlorothiazide), it relaxes blood vessels and reduces excess water in the body to lower blood pressure, reducing the risk of fatal and nonfatal cardiovascular events like strokes and heart attacks.
