Which drug is classified as an ACE inhibitor?

Ramipril is classified as an ACE inhibitor, which stands for Angiotensin-Converting Enzyme inhibitor. ACE inhibitors are a class of medications that block the enzyme responsible for converting angiotensin I to angiotensin II, a substance that narrows blood vessels and can raise blood pressure. By doing so, ACE inhibitors help to lower blood pressure, decrease the workload on the heart, and provide protective benefits for the kidneys, especially in patients with conditions such as hypertension and heart failure.

The other options do not fall under the ACE inhibitor category. Metaxalone is a muscle relaxant used to relieve discomfort associated with acute musculoskeletal conditions. Ezetimibe with Simvastatin is a combination medication used to lower cholesterol levels by inhibiting cholesterol absorption in the intestines and also blocking its production in the liver. Darifenacin Hydrochloride is an antimuscarinic agent used for managing overactive bladder symptoms. Thus, Ramipril is the correct choice, as it is the only option that functions specifically as an ACE inhibitor.