in anesthetized and immobilized rats , an hour-long continuous intravenous injection of dl-propranolol ( pr ; 3 mg/kg ) , pindolol ( pi ; 1 mg/kg ) , oxprenolol ( ox ; 3 mg/kg ) or atenolol ( at ; 3 mg/kg ) invariably resulted in moderate hypotension .
C0004147
atenolol
C0020649
hypotension