A Double-Blind, Placebo-Controlled, Parallel Dose-Response Study of Amlodipine in Stable Exertional Angina Pectoris

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Abstract
A placebo-controlled, double-blind, dose-response study of amlodipine (1.25, 2.5, 5, and 10 mg once daily) was carried out in 136 patients with stable exertional angina pectoris. Improvements in total exercise tolerance, time to onset of angina during exercise, ST-segment deviation at maximum common load, frequency of angina attacks, and nitroglycerin consumption were greater following amlodipine than placebo. The maximum improvement in exercise parameters occurred with the highest dose of amlodipine. All doses produced significant reductions in angina attack frequency and the rate of nitroglycerin consumption. Amlodipine was well tolerated and no patients were withdrawn due to adverse events or laboratory abnormalities.

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