Phosphatidylserine (PS) is quite literally a “brain nutrient.” As a matter of fact, this phospholipid is an integral component in the structure of the brain and spinal cord, and is active at cell membranes (including synaptic membrane zones).It plays a key role in cell cycle signaling, specifically in relationship to apoptosis. Studies have provided evidence that PS may promote attention, memory, processing speed, and support overall cognitive health. PS may also support healthy stress and cortisol levels. A significant amount of published clinical research has demonstrated that PS supplementation supports various cognitive parameters in children, including those with ADHD.