Puritan's Pride, Neuro-PS (Phosphatidylserine), 200 mg, 60 SoftgelsProduct Description Phosphatidylserine (PS), is a natural substance found in brain cell membranes.* Phosphatidylserine levels in the brain can decline with age, so it is important to supplement with Neuro PS every day to aid brain function and support a healthy mind.*Appears in the brain, especially in the neurons the complex series of central nervous system pathways responsible for exchanging sensory information. Consumption of phosphatidylserine may