NCIt definition : The hydrochloride salt form of isoproterenol, a synthetic catechol compound and potent
beta adrenergic agonist with peripheral vasodilator, bronchodilator, and cardiac stimulating
properties. Isoproterenol exerts its effect on the beta-1 adrenergic receptors in
the myocardium, thereby increasing heart rate and cardiac output. In addition, isoproterenol
acts on beta-2 adrenergic receptors in bronchiolar and vascular smooth muscle, thereby
causing smooth muscle relaxation.;