Phosphatidylserine (PS) is a natural phospholipid that is an essential component of cell membranes. Cogni-PS promotes brain function by helping maintain neuronal membrane fluidity (cell to cell communication), which is essential for cognition, mental performance, attentiveness and reaction time. PS protects against stress, reducing the action of cortisol (catabolic stress hormone). Cogni-PS is a concentrated form of phosphatidylserine derived from soy phospholipids and offers superior stability