ko 1400 , tiprenolol and propranolol inhibited the hypotension and tachycardia induced by isoproterenol at an oral dose level of 2 mg/kg or more . beta-blocking action in these preparations was found to be tiprenolol greater than ko 1400 greater than propranolol .
C0039231
tachycardia
C0022245
isoproterenol