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Prostacyclin (also called prostaglandin I₂ or PGI₂) is a prostaglandin member of the eicosanoid family of lipid molecules. It inhibits platelet activation and is also an effective vasodilator.

When used as a drug, it is also known as epoprostenol. The terms are sometimes used interchangeably.

Function

Prostacyclin chiefly prevents

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