NPTE Pharmacology Practice Test

Losartan, Telmisartan, and Candesartan are classified as ARB blockers, which stands for Angiotensin II Receptor Blockers. These medications work by inhibiting the action of angiotensin II, a hormone that constricts blood vessels and raises blood pressure. By blocking this receptor, ARBs allow for the relaxation of blood vessels, leading to a decrease in blood pressure and a reduction in the workload on the heart.

This classification is significant in the treatment of conditions such as hypertension and heart failure, as ARBs provide an alternative for patients who may experience cough or other side effects with ACE inhibitors. Unlike beta blockers, which primarily affect heart rate and contractility, or calcium channel blockers, which impact muscle contraction and vascular smooth muscle, ARBs specifically target the renin-angiotensin-aldosterone system.

Overall, understanding that Losartan, Telmisartan, and Candesartan are ARBs helps to contextualize their role in cardiovascular pharmacology, particularly in managing hypertension and associated cardiovascular risks.