Trimipramine maleate (Surmontil maleate) appears to inhibit serotonin transport and norepinephrine uptake by nerve terminals. This increases available norepinephrine or serotonin and prolongs its action. Trimipramine Maleate is the maleate salt form of trimipramine, a tricyclic secondary amine of the dibenzazepine class, with an antidepressant property.

ICI 118,551 hydrochloride (ICI 118551 hydrochloride) is a highly selective β2 adrenergic receptor antagonist (Kis: 0.7, 49.5, and 611 nM for β2, β1, and β3 receptors).

Isorhoifolin and vicenin II are main compounds of ethyl acetate fraction (EAcF) obtained from Erythrina velutina leaves, EAcF increases the cardiac contractile force by increasing the l-type calcium current and activating the adrenergic receptor pathway.

Pamatolol is a selective and potent beta-adrenoceptor antagonist that has not shown sympathomimetic activity in ex vivo experiments.

Norepinephrine bitartrate salt is an adrenergic neurotransmitter.