ABSTRACT
The Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT) compared four antihypertensive agents in patients 55 years and older: chlorthalidone, doxazosin, amlodipine, and lisinopril. The doxazosin arm was terminated early because of an excess of congestive heart failure. Chlorthalidone was at least equivalent to amlodipine and lisinopril in all of the outcomes measured, and was better in some, notably heart failure.
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