<prompt> Which of the following drug releases Nitric oxideHydralazineAminophyllineAmrinoneSildenaphil sulphate  <response>: Hydralazine is used with or without other medications to treat high blood pressure. Lowering high blood pressure helps prevent strokes, hea attacks, and kidney problems.Hydralazine is called a vasodilator. It works by relaxing blood vessels so blood can flow through the body more easily. Hydralazine may induce aeriolar vasodilation by preventing oxidation of nitric oxide and thereby lowering blood pressure. 