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Hypertension: Focus on Olmesartan Medoxomil

Author(s): Allison M. Bel | Diane Nykamp

Journal: Clinical Medicine : Therapeutics
ISSN 1179-1713

Volume: 1;
Start page: 1;
Date: 2009;
Original page

Keywords: Olmesartan | hypertension | ARB | angiotensin receptor blocker

Hypertension is the leading cause of stroke, heart failure, and ischemic heart disease. One of the key regulators of blood pressure is the renin-angiotensin aldosterone system (RAAS). Olmesartan medoxomil, an angiotensin receptor blocker (ARB), counteracts some of the primary effects of the RAAS by selectively and irreversibly binding to the type 1 angiotensin II receptor (AT1-R). The pharmacokinetic profile of this ARB allows for the convenience of one a day dosing. The pharmacodynamic profile of olmesartan is favorable because it is neither metabolized by, induces, nor inhibits the CYP450 isozyme system. The metabolism of the prodrug to the active form occurs in the gut by the enzyme arylesterase. No further metabolism and a lack of interaction with the CYP450 isozyme system leads to very few drug interactions with olmesartan medoxomil.Numerous studies have been conducted to evaluate the efficacy, safety, and tolerability of olmesartan medoxomil. Studies have been conducted to compare olmesartan medoxomil to other angiotensin receptor blockers. The efficacy of olmesartan medoxomil has been compared to other classes of antihypertensive agents. Results of all trials have proven non-inferiority of olmesartan medoxomil to other antihypertensive agents; some studies have shown superior blood pressure control provided by olmesartan medoxomil when starting dosages are evaluated. Overall, olmesartan medoxomil has the potential to facilitate the achievement of blood pressure goals, enhance compliance with a once daily dosing regimen, and is associated with minimal side effects. Olmesartan medoxomil has been proven to be a safe and effective antihypertensive drug when compared to other ARBs and other antihypertensive agents.
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