at comparable levels of ventricular beta-adrenoceptor blockade , ( - ) -pindolol and ( - ) -metoprolol were more potent in producing ventricular bradycardia than their respective ( + ) -isomers , whereas ( - ) - and ( + ) -propranolol and ( - ) - and ( + ) -penbutolol were equiactive .
C0031937
pindolol
C0428977
bradycardia