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Updated: Jul 14, 2026

Quadruple-Checkerboard: A Modification of the Three-Dimensional Checkerboard for Studying Drug Combinations
Published on: July 24, 2021
Compliance and fixed-dose combination therapy
Sripal Bangalore1, Anupama Shahane, Sanobar Parkar
1Hypertension Program, Division of Cardiology, Columbia University College of Physicians and Surgeons, St. Luke's-Roosevelt Hospital Center, 1000 Tenth Avenue, Suite 3B-30, New York, NY 10025, USA.
Abstract:
Despite data on the importance of blood pressure control in preventing cardiovascular and cerebrovascular events, only 34% of hypertensive patients have their blood pressure under control. The National Council on Patient Information and Education has estimated that the compliance rate is just over 30% for chronic conditions like hypertension. Polypharmacy and complex treatment regimens have been identified as important, modifiable risk factors for medication noncompliance. Fixed-dose combination regimens are attractive options because of the improved antihypertensive efficacy resulting from the dual mechanistic action of components targeting different effector mechanisms. One drug in the fixed-dose combination may negate an adverse effect of the other medication. Above all, fixed-dose combination therapy reduces pill burden and improves medication compliance, which can translate into better cardiovascular outcomes. Fixed-dose combinations should be used routinely for the management of hypertension and should also be considered when initiating therapy for patients with newly diagnosed hypertension.
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