PhosphatidylSerine Matrix 500mg 60 softgels, from Source NaturalsPhosphatidylSerine Matrix Supports Memory and Cognition Natural part of healthy neuron structure and function May support enhanced mood and stress response New encapsulation method ensures long shelf life and stability Source Naturals is pleased to introduce PhosphatidylSerine Matrix (Phosphatidyl Serine Matrix), a phospholipid that has been found to support brain function. In its natural state, Phosphatidylserine is most importantly found in the cell