Metoprolol is classified as which type of drug?

Metoprolol is classified as a beta-adrenergic blocker, also known as a beta-blocker. This class of medications works by blocking the effects of adrenaline (epinephrine) on beta receptors in the body, primarily found in the heart and blood vessels. By doing this, beta-blockers reduce heart rate, decrease blood pressure, and diminish the workload on the heart, making them effective for conditions such as hypertension, heart failure, and certain types of arrhythmias.

The role of metoprolol in lowering heart rate and blood pressure helps prevent complications associated with cardiovascular diseases. It is often prescribed for patients with coronary artery disease and after heart attacks to improve survival rates and quality of life.

In contrast, the other classes mentioned serve different purposes. Calcium channel blockers help prevent calcium from entering cells of the heart and blood vessel walls, leading to lower blood pressure. Angiotensin receptor blockers work by inhibiting the actions of angiotensin II, a substance that narrows blood vessels, thus also leading to lower blood pressure. Alpha agonists directly stimulate alpha receptors, causing vasoconstriction and typically increasing blood pressure, which is the opposite effect desired in most cardiovascular therapies.