"Natrol's Memory Complex is a unique formulation designed to provide the most cutting edge nutrients to help maximize brain function. This scientific brain support formula includes important compounds like Phosphatidyl Serine, key to neural communication. Central to the power of this formula is Vinpocetine, from the periwinkle plant, and Huperzine-A, herbal extracts thta help to maintain overall mental capacity and neural protection. Ginkgo Biloba is added to support energy levels and maximum circulation. "