Comments that angiotensin receptor blockers (ARBs) are selective and specific antagonists of the type-1 angiotensin receptor. Indication for the treatment of hypertension; Combination of ARBs with any other class of antihypertensive drugs since these drugs block at a different site from the renin-angiotensin system compared with angiotensin-converting enzyme inhibitors; Reduction of peripheral vascular resistance while cardiac output is mainly unchanged; Normalization of the typical pathological vascular structure and function in hypertensive patients including the hemodynamic abnormalities.