Ginkgo Biloba-PS
Ginkgo can only be effective when highly concentrated, easily absorbable (Phytosome® technology), standardized extracts are used. Ginkgo biloba-PS from Vitals contains 480 mg of the patented Virtiva® per tablet. Virtiva consists of 120 mg Ginkgo biloba extract (of which 24 mg flavone glycosides and 6 mg terpene lactones) and 360 mg lecithin (of which 55 mg phosphatidylserine).
This ratio of flavone glycosides and terpene lactones (24/6) has been most commonly used in scientific research with Ginkgo biloba. Research also shows that the acute effects of Ginkgo biloba extract on cognitive functions are increased when combined with phosphatidylserine. Presumably, the effect is also enhanced because phosphatidylserine improves absorption and can cross the blood-brain barrier. Phosphatidylserine is common in the brain.