What type of drug is carvedilol (Coreg)?

Carvedilol is classified as an alpha- and noncardioselective beta blocker. This unique combination allows carvedilol to provide several cardiovascular benefits. By blocking both alpha-1 adrenergic receptors and beta-1 and beta-2 adrenergic receptors, carvedilol reduces systemic vascular resistance and blood pressure through vasodilation and minimizes the heart rate and myocardial contractility.

The alpha-1 blockade contributes to its antihypertensive effects by causing relaxation of vascular smooth muscle, while the noncardioselective beta blockade affects both the heart and other tissues, which helps manage heart failure and chronic heart conditions. This dual action makes carvedilol particularly effective for patients with conditions like heart failure and hypertension.

Other classifications in the context of the question include beta-1 selective blockers, which specifically target the heart without affecting blood vessels. Angiotensin receptor blockers are a different class entirely, focusing on inhibiting effects of angiotensin II involved in blood pressure regulation. Hence, the comprehensive effects provided by the combined actions of carvedilol justify its classification as an alpha- and noncardioselective beta blocker.