alexa Azilsartan medoxomil: a new Angiotensin receptor blocker.


Journal of Nephrology & Therapeutics

Author(s): Zaiken K, Cheng JW

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Abstract BACKGROUND: Azilsartan medoxomil is an angiotensin receptor blocker, approved on February 25, 2011 by the US Food and Drug Administration (FDA) for hypertension management. OBJECTIVE: The purpose of this study was to review the pharmacology, pharmacokinetics, efficacy, safety profile, and role of azilsartan for hypertension management. METHODS: Peer-reviewed clinical trials, review articles, and relevant treatment guidelines were identified from MEDLINE and Current Contents (both 1966 to August 31, 2011) using the search terms azilsartan, TAK-491, TAK-536, pharmacology, pharmacokinetics, pharmacodynamics, pharmacoeconomics, and cost-effectiveness. The FDA Web site and manufacturer prescribing information were also reviewed to identify other relevant information. RESULTS: Compared with olmesartan 40 mg daily, azilsartan 80 mg reduced mean systolic blood pressure (SBP) by an additional 2.1 mm Hg (P = 0.038), whereas azilsartan 40 mg was noninferior to olmesartan 40 mg. Azilsartan 40 mg or 80 mg added to chlorthalidone 25 mg daily significantly reduced SBP to a greater extent than did chlorthalidone alone (P < 0.05), but there was no difference between azilsartan 40 mg and 80 mg (40 mg: -31.72 mm Hg; 80 mg: -31.3 mm Hg [P > 0.05]). When coadministered with amlodipine 5 mg daily, both azilsartan 40 mg and 80 mg + amlodipine decreased SBP significantly more than amlodipine alone (amlodipine: -13.6 mm Hg; with azilsartan 40 mg: -24.79 mm Hg; with azilsartan 80 mg: -24.51 mm Hg [P < 0.05]). Compared with ramipril 10 mg daily, both azilsartan 40 mg and 80 mg resulted in significantly (P < 0.001) greater reductions in mean SBP (-20.63 and -21.24 mm Hg, respectively; ramipril: -12.22 mm Hg). The most common adverse events reported were dizziness (4\%), dyslipidemia (3.3\%), and diarrhea (2\%). CONCLUSIONS: At the recommended dose of 80 mg once daily, azilsartan is reported to be an efficacious BP-lowering agent. With once-daily dosing and a favorable side-effect profile, azilsartan is an attractive option for the treatment of hypertension. There is a lack of data supporting the use of azilsartan for improvement in cardiovascular outcomes; therefore, azilsartan is not approved for indications other than the treatment of hypertension. Copyright © 2011 Elsevier HS Journals, Inc. All rights reserved. This article was published in Clin Ther and referenced in Journal of Nephrology & Therapeutics

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