to determine whether the beta 2-selectivity of ici 118551 extended to human airways , we measured bronchial beta-adrenoceptor blockade and the reduction in exercise heart rate in six normal subjects on different occasions after ingestion of ici 118551 20 or 50 mg , propranolol 40 mg or placebo in random order .
C0428977
reduction
C0033497
propranolol