Isuprel (Isoproterenol) is a beta andrenergic agonist used for sick sinus syndrome, Stokes-Adams syndrome, Pulmonary hypertestion, Bradycardia, Status asthmaticus, and Extrinsic sympathetic stimulation post cardiac transplantation. Your doctor may prescribe this for other conditions as well. Invasive blood pressure monitoring should be considered when centrally administered vasoactive agents are used or when frequent changes in infusion rate are required. The usual dosage of Isuprel (Isoproterenol) is 0.1 to 20 mcg/min IV.