Cigarette Smoking and the Treatment of Angina with Propranolol, Atenolol, and Nifedipine

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Abstract
To determine whether cigarette smoking affects the results of drug treatment for angina, we studied 10 cigarette smokers with angina who were given placebo, nifedipine (60 mg per day), propranolol (240 mg per day), and atenolol (100 mg per day), each for one week. The four-week double-blind study was repeated with the same randomly determined order of drug sequences, after all 10 subjects had stopped smoking.