Now Phosphatidyl Serine (100mg) improves psychological and intellectual performance. A component derived from soy lecithin, Phosphatidyl Serine has a vital function in structuring the cell membrane and inter-cellular interaction. Phosphatidyl Serine is a significant part of neural membranes and it helps with transmitting neurotransmitters’ electrical waves that are responsible for emotions, memory, and learning. These abilities make NOW® Phosphatidyl Serine an ideal supplement for the support of cognitive function.