Brand Names: Hydralazine, Minoxidil

Vasodilators are oral medications used to treat high blood pressure. These drugs open or dilate blood vessels. They directly affect muscles in the walls of your arteries, preventing the muscles from tightening and the walls from narrowing, which leads to a relaxation of smooth muscle cells within the vessel walls, particularly in the large veins, large arteries, and smaller arterioles.

Headache, Upset stomach, Dizziness, Growth in body hair

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