in 12 patients who received diltiazem , 180 mg/day , the time to development of angina increased from 5.9 +/- 0.7 minutes ( +/- standard error of the mean ) during placebo treatment to 8.3 +/- 0.8 minutes during diltiazem treatment and to 9.2 +/- 0.8 minutes with propranolol , 240 mg/day .
C0002962
angina
C0033497
propranolol