What brand name is hydralazine hydrochloride marketed under?

Hydralazine hydrochloride is marketed under the brand name Apresoline. This medication is primarily used as a vasodilator, which helps to relax blood vessels and improve blood flow, making it effective in managing hypertension and heart failure. Its mechanism involves directly relaxing the smooth muscles of the blood vessels, leading to lowered blood pressure.

The other options consist of different medications that serve distinct purposes. Losartan is an angiotensin II receptor blocker used to manage high blood pressure and protect the kidneys in diabetes. Metoprolol is a beta-blocker commonly prescribed for high blood pressure, angina, and certain types of heart failure. Furosemide is a diuretic used to treat fluid retention and hypertension. Thus, each of those options refers to a different class of drugs and does not correspond to hydralazine, reinforcing that Apresoline is the correct answer in relation to hydralazine hydrochloride.