Amlozaar-H Tablet is used in the treatment of high blood pressure. It contains Losartan 50mg Amlodipine 5mg and Hydrochlorothiazide 12.5mg. Losartan is an angiotensin receptor blocker (ARB) and Amlodipine is a calcium channel blocker (CCB). They work by widening and relaxing the blood vessels thereby lowering blood pressure. Hydrochlorothiazide is a diuretic which removes extra water and certain electrolytes from the body through urine. Over time it also works by relaxing blood vessels and improving blood flow.