The following diuretics, beta-blockers, calcium channel blockers (also known as calcium antagonists), angiotensin-converting enzyme inhibitors (ACEI), angiotensin II receptor antagonists (ARB), and fixed-ratio combinations of these drugs are commonly used for the treatment of hypertension. In addition, a-blockers or other types of antihypertensive drugs (centrally acting drugs, direct vasodilators, renin inhibitors) are sometimes used in certain hypertensive populations. Liu Fang, Department of Geriatrics, Xiyuan Hospital, Chinese Academy of Traditional Chinese Medicine, China