What type of drug is Cardizem (diltiazem)?

Cardizem, which is the brand name for diltiazem, is classified as a calcium channel blocker. This type of medication works by inhibiting the influx of calcium ions into the cardiac and smooth muscle cells. By doing so, calcium channel blockers reduce the contractility of the heart and cause vasodilation of peripheral and coronary arteries. This results in decreased heart rate and blood pressure, making them particularly useful in the management of conditions such as hypertension, angina, and certain arrhythmias.

This mechanism is distinct from other classes like beta blockers, which primarily affect the adrenergic system, or diuretics, which focus on reducing fluid volume in the body. Additionally, while diltiazem does exhibit some vasodilatory effects, it is primarily classified as a calcium channel blocker rather than a specific vasodilator. Thus, the choice of identifying diltiazem as a calcium channel blocker aligns with its primary pharmacological action, providing clarity on its role in treating cardiovascular conditions.