What are the commonly used antihypertensive drugs?

There are: sympathetic nerve inhibitors such as clonidine, guanidine, prazosin and propranolol. Antihypertensive drugs that mainly affect blood volume, such as hydrochlorothiazide; Angiotensin I invertase inhibitors, such as captopril; Angiotensin receptor antagonists (ARBs), such as candesartan; Calcium antagonists such as nifedipine and drugs that directly relax vascular smooth muscle such as hydralazine.