epinephrine excitatory

Is Epinephrine Inotropic Or Metabotropic? The adrenergic receptors (or adrenoceptors) are a class of metabotropic G protein -coupled receptors that are targets of the catecholamines, especially norepinephrine or noradrenaline, and epinephrine ( adrenaline ). Although dopamine is a catecholamine, its receptors are in a different category. Is epinephrine excitatory or inhibitory? Also called adrenaline, epinephrine