Apresoline is a vasodilator that works by relaxing the muscles in your blood vessels to help them dilate (widen). This lowers blood pressure and allows blood to flow more easily through your veins and arteries. Apresoline is used to treat high blood pressure (hypertension).

How does hydralazine work in the body?

Hydralazine is in a class of medications called vasodilators. It works by relaxing the blood vessels so that blood can flow more easily through the body. High blood pressure is a common condition and when not treated, can cause damage to the brain, heart, blood vessels, kidneys and other parts of the body.

How long does it take Apresoline to work?

Some websites still use the name Apresoline. However, it technically is only available as a generic drug in the US. Why does hydralazine have to be taken so many times per day? Although hydralazine starts working to lower your blood pressure in as little as 1 hour, it only stays in your body for 3 to 7 hours.