the relative efficacies of oral verapamil , a calcium-entry blocking drug , and propranolol , a beta-adrenergic blocking drug , were compared in 12 patients who had both stable angina pectoris and mild to moderate systemic hypertension , using a placebo-controlled , double-blind , randomized crossover protocol .
C0033497
propranolol
C0020538
systemic hypertension