Phosphatidylserine, also known as complex neuronic acid, PS for short, is extracted from residues of natural soybean oil, is an active substance in cell membranes, especially in brain cells. Its main function is to improve the function of nerve cells, regulate the conduction of nerve impulses, improve the function of brain memory, because of its strong lipophilic, absorption can quickly through the blood-brain barrier into the brain, play a role in soothing vascular smooth muscle cells, increase the blood supply to the brain.