bucindolol ( 3 mg/kg ) lowered blood pressure significantly in rats pretreated with ( i ) prazosin ( 0.4 mg/kg ) ( ii ) prazosin ( 0.4 mg/kg ) plus propranolol ( 0.5 mg/kg ) or ( iii ) labetalol ( 0.5 mg/kg ) .
C0020649
lowered blood pressure
C0022860
labetalol