Abstract
Carvedilol is a nonselective β-receptor antagonist with vasodilating properties primarily due to selective α-1 antagonism. This 4-treatment, 5-period, double-blind, crossover study evaluated the efficacy and safety of 3 doses of carvedilol (12.5, 25, and 50 mg given twice daily) versus placebo in 122 patients with chronic stable angina. Carvedilol in doses of 25 mg twice daily and 50 mg twice daily was statistically superior to placebo with respect to time to angina (placebo: 316 seconds; 25 mg carvedilol: 337 seconds, p = 0.0039; 50 mg: 345 seconds, p <0.0001) and time to 1-mm ST-segment depression (placebo: 301 seconds; 25 mg: 313 seconds; 50 mg: 323 seconds; p <0.0001). The percentage of patients reporting any adverse experience was slightly less in those receiving placebo (placebo: 28.4%; 12.5 mg: 33.1%; 25 mg: 34.5%; 50 mg: 31.9%). Carvedilol is effective and safe in treating patients with chronic stable angina.
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