Prostaglandins occur naturally in the body and are involved in many biological functions.
When the smaller blood vessels in the lungs become more resistant to blood flow, the right ventricle must work harder to pump enough blood through the lungs. Epoprostenol works by relaxing blood vessels and increasing the supply of blood to the lungs, reducing the workload of the heart. In deciding to use a medicine, the risks of using the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. Before taking this medicine, make sure your doctor knows if you are pregnant or if you may become pregnant.