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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. Related Documents 22. USP DI Vol. Related Documents 23.