Solaray Guaranteed Potency Herbs deliver confidence by providing exacting and consistent dosing of thoroughly tested herbs of the highest quality available. Ginkgo Phytosome is made by a patented process designed to produce a product with enhanced absorption. Ginkgo Phytosome is created by bonding Ginkgo biloba extract to phosphatidyl choline—a natural component of lecithin which is found throughout the body in cell membranes.