Doctors Best, Phosphatidylserine With SerinAid, 100 mg, 120 Veggie CapsProduct Description Phosphatidylserine is a naturally occurring phospholipid compound essential for healthy brain cell structure and function. Concentrated in the brain, it supports cell to cell communication, neurotransmitter activity, and memory performance. Supplementing with Phosphatidylserine helps promote mental clarity, focus, learning ability, and healthy cognitive aging, making it one of the most well researched nutrients for brain health and