Question: is amlodipine besylate the same as hydrochlorothiazide?
Answer: Amlodipine is a calcium channel blocker. Amlodipine relaxes (widens) blood vessels and improves blood flow. Hydrochlorothiazide is a thiazide diuretic (water pill) that helps prevent your body from absorbing too much salt, which can cause fluid retention. Olmesartan is an angiotensin II receptor antagonist.