Grape Seed PCO Phytosome™ dietary supplement features a complex between one molecule of a procyanidolic oligomer (PCO) derived from the grape seed and two molecules of phosphatidylcholine (the chief component of lecithin) to form what is called a Phytosome. This Phytosome complex improves absorption.The PCOs extracted from grape seed offer antioxidant activity 50 times stronger than vitamin E. They also have the ability to protect against both water and fat-soluble free radicals, offering protection to the cells against oxidation.*