Hydralazine is used with or without other medications to treat high blood pressure . Lowering high blood pressure helps prevent strokes, heart attacks , and kidney problems. Hydralazine is called a vasodilator. It works by relaxing blood vessels so blood can flow through the body more easily.
Along with its needed effects, hydralazine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.