in rats treated with phenoxybenzamine ( 5 mg/kg i.v . ) , adrenaline was shown to have much more potent vasodilating action resulting from beta 2-stimulation than noradrenaline , the dose difference for causing the diastolic blood pressure decrease by a 25 mm hg being almost 80 times .
C0014563
adrenaline
C0028351
noradrenaline