Phosphatidylserine (PS) is an amino acid derivative compound that is fat-soluble and found in high amounts in the brain.It is one of the most abundant components in the brain cell membrane, which enhances brain function by smoothing neural transmission.PS is often regarded as the nutrient of brain.It can increases the concentration of glucose in the brain, promote the release of Acetylcholine, and maintain the health of nerve cells, and increases the activity of cell membranes.As we age, however, the body isn’t able to synthesise phosphatidylserine as effectively.