Which of the following medications are classified as angiotensin receptor blockers?

Angiotensin receptor blockers (ARBs) are a class of medications used primarily to manage hypertension and heart failure by blocking the action of angiotensin II, a substance in the body that causes blood vessels to constrict. By inhibiting the effects of angiotensin II, ARBs help to relax blood vessels, lower blood pressure, and improve blood flow.

Losartan, which is the correct choice, is the prototype medication within this class and is specifically designed to block the angiotensin II receptors. This action leads to vasodilation and decreased blood pressure. It is commonly prescribed for managing conditions like high blood pressure and to provide renal protection in diabetic patients.

When considering the other options, Lisinopril is an ACE inhibitor, which functionally differs from ARBs as it prevents the conversion of angiotensin I to angiotensin II rather than blocking the receptors. Metformin is an oral hypoglycemic agent that is mainly used in the treatment of type 2 diabetes and has no direct relation to the modulation of the renin-angiotensin system. Sertraline is an antidepressant in the selective serotonin reuptake inhibitor (SSRI) class and is used to treat depression and anxiety disorders, thus having no