Phosphatidylserine (PS) is an essential component of healthy nerve cell membranes, and is an especially important part of the membranes of brain cells.¹ Supplemental PS crosses the blood-brain barrier and supports optimal structure and function of brain cells. In this way, phosphatidylserine promotes healthy memory, focus, attention, concentration and cognition.² Clinical trials have demonstrated that PS supplementation can support cognitive performance, as well as memory and attention.^3,4