Which of the following is NOT an Angiotensin II Receptor Blocker (ARB)?

In this context, the role of Angiotensin II Receptor Blockers (ARBs) is critical in managing conditions such as hypertension and heart failure. ARBs function by blocking the effects of angiotensin II, a substance that can constrict blood vessels and stimulate aldosterone secretion, thereby leading to increased blood pressure.

Eprosartan, Valsartan, and Losartan are all classified as ARBs because they selectively antagonize the angiotensin II type 1 receptor, effectively preventing angiotensin II from exerting its hypertensive effects.

Terazosin, however, does not fall under the category of ARBs. Instead, it is an alpha-1 adrenergic blocker primarily used to treat hypertension and symptoms of benign prostatic hyperplasia (BPH). By blocking alpha-1 receptors, terazosin causes vasodilation and lowers blood pressure in a different manner than ARBs.

Understanding the pharmacological classifications is essential for effectively managing hypertension and its related conditions, as each drug class has distinct mechanisms of action and therapeutic uses.