No, Diovan (valsartan) is an angiotensin receptor blocker (ARB). While angiotensin converting enzyme (ACE) inhibitors prevent the conversion of angiotensin I to angiotensin II, ARBs prevent the angiotensin I from binding to the AT1 receptor. End result is the same, inhibition of vasoconstrictive properties of angiotensin I and reduction in blood pressure.
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