Phosphatidylserine is a phospholipid found in all cells, but is most concentrated in brain cells. This familiarly-called “brain nutrient” supports cognitive function, emotional well-being and behavioral performance by restoring cell membrane composition. It has also been shown to support memory. In a double blind placebo controlled multicenter study of 425 individuals, daily supplementation of phosphatidylserine over six months resulted in statistically significant support of behavioral and cognitive parameters. In another six-month study of 40 individuals, phosphatidylserine supplementation enhanced cerebral metabolism and outcomes of cognitive training. These findings are consistent with earlier studies. In a placebo-controlled investigation of 149 subjects, the group receiving phosphatidylserine scored higher than placebo in performance tests related to memory tasks of daily life. In a trial of 35 subjects, those receiving phosphatidylserine exhibited behavioral support after six months. Pure Encapsulations unique formula contains 95-98% phosphatidylserine, the highest concentration available.*