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Antihypertensive efficacy and safety of olmesartan medoxomil compared with amlodipine for mild-to-moderate hypertension

Abstract

The antihypertensive efficacy of the angiotensin II receptor blocker olmesartan medoxomil has been shown to compare favourably with that of other antihypertensive agents. This randomized, double-blind study compared the antihypertensive efficacy of the starting dose of olmesartan medoxomil with that of the calcium channel blocker amlodipine besylate (amlodipine) in subjects with mild-to-moderate hypertension. Following a 4-week, single-blind, placebo run-in period, 440 subjects aged 18 years were randomized to the starting dose of olmesartan medoxomil (20 mg/day), amlodipine (5 mg/day), or placebo for 8 weeks. Subjects were evaluated by 24-h ambulatory blood pressure monitoring (ABPM) and by seated cuff blood pressure (BP) measurements at trough. The primary end point was the change from baseline in mean 24-h diastolic blood pressure (DBP) by ABPM at Week 8. Secondary end points included change from baseline in mean 24-h ambulatory systolic blood pressure (SBP) at 8 weeks, change from baseline in mean seated trough cuff DBP and SBP measurements, and response and control rates for DBP <90 and <85 mmHg. Control rates for SBP <140 and <130 mmHg were also calculated. Olmesartan medoxomil and amlodipine produced significantly greater reductions in ambulatory and seated DBP and SBP compared with placebo. Mean reductions in ambulatory and seated BP were similar between the two active agents; however, in the olmesartan medoxomil group, significantly more patients achieved the SBP goal of <130 mmHg and the DBP goal of <85 mmHg. Both drugs were well tolerated at the recommended starting dose. Although amlodipine was associated with a higher incidence of oedema, this did not reach statistical significance. Olmesartan medoxomil is an effective antihypertensive agent, with BP-lowering efficacy at the starting dose similar to that of amlodipine, and is associated with more patients achieving the rigorous BP goals of SBP <130 mmHg and DBP <85 mmHg.

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Acknowledgements

Sources of research support: Sankyo Pharma Inc.

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Correspondence to S G Chrysant.

Appendix

Appendix

List of study investigators

James Adelman, MD, Greensboro, NC, USA

Michael Azorr, MD, Portland, OR, USA

Norse Bear, MD, Denver, CO, USA

Frederick Bieberdorf, MD, Austin, TX, USA

Scott Bleser, MD, Bellbrook, OH, USA

Rogelio Cattan, MD, Miami, FL, USA

Deanna Cheung, MD, Long Beach, CA, USA

Steven Chrysant, MD, Oklahoma City, OK, USA

Michael Doyle, MD, Birmingham, MI, USA

James Fulmer, MD, Jacksonville, FL, USA

Thomas Garland, MD, FACC, Lawrenceville, NJ, USA

Gumaro Garza, MD, McAllen, TX, USA

Larry Gilderman, DO, Pembroke Pines, FL, USA

Ronald Gilman, MD, East Providence, RI, USA

Stephen Green, MD, Hampton, VA, USA

William Grossman, MD, Charleston, SC, USA

Frank Hampel, Jr., MD, New Braunfels, TX, USA

Stuart Harris, MD, PhD, Miami, FL, USA

William John Henry III, MD, Greer, SC, USA

Jeffrey Herbst, MD, Portland, OR, USA

James Herron, MD, Chicago, IL, USA

Dean Kereiakes, MD, Cincinnati, OH, USA

Marc Kozinn, MD, Amherst, NY, USA

Andrew Lewin, MD, Los Angeles, CA, USA

Martin Lunde, MD, Arden Hills, MN, USA

Frank Maggiacomo, DO, Cranston, RI, USA

Thomas Marbury, MD, Orlando, FL, USA

David Miller, MD, North Dartmouth, MA, USA

Rafael Montoro, MD, Coral Gables, FL, USA

Joel Neutel, MD, Orange, CA, USA

Alan Niederman, MD, FACC, Ft. Lauderdale, FL, USA

Michael Peveler, MD, Louisville, KY, USA

Paul Ratner, MD, San Antonio, TX, USA

Albert Razetti, MD, DeLand, FL, USA

Dennis Ruff, MD, San Antonio, TX, USA

Stephan Sharp, MD, Nashville, TN, USA

Eugene Spiotta, Jr., MD, Memphis, TN, USA

Gary Andrew Tarshis, MD, Colorado Springs, CO, USA

Melvin Tonkon, MD, Anaheim, CA, USA

Timothy Truitt, MD, Melbourne, FL, USA

Suzanne Weakley, MD, Houston, TX, USA

David Williams, MD, Daytona Beach, FL, USA

Laurence Yellen, MD, San Diego, CA, USA

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Chrysant, S., Marbury, T. & Robinson, T. Antihypertensive efficacy and safety of olmesartan medoxomil compared with amlodipine for mild-to-moderate hypertension. J Hum Hypertens 17, 425–432 (2003). https://doi.org/10.1038/sj.jhh.1001577

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