What is the therapeutic classification of Verapamil hydrochloride?

Verapamil hydrochloride is classified as a calcium channel blocker, which is a group of medications that interfere with the movement of calcium into the cells of the heart and blood vessel walls. This mechanism of action leads to relaxation of the coronary and peripheral blood vessels, resulting in decreased blood pressure, reduced heart rate, and decreased myocardial contractility.

This classification is important in the context of treating conditions such as hypertension, angina, and certain arrhythmias. Calcium channel blockers like verapamil are distinct from diuretics, which primarily work to remove excess fluid from the body, ACE inhibitors that inhibit the angiotensin-converting enzyme to lower blood pressure, and beta blockers that block the effects of adrenaline on the heart and circulation. Understanding the therapeutic classification helps in recognizing the drug's role in managing cardiovascular conditions effectively.