What is Phosphatidylserine powder? Phosphatidylserine is a phospholipid and it is a component of the cell membrane. Phosphatidylserine 20%, 50% and 70% are light yellow powders, soluble in most non-polar solvents and insoluble in anhydrous . Phosphatidylserine powder is good for improving nerve cell functions, increasing blood flow to the brain, relieving stress and improving sleep. Phosphatidylserine powder (PS) is from the phospholipids family, which is the only one that could control the functioning of key membrane proteins. Usually it refers to a series of compounds of PS, in that the lipid-acetyl residues differs greatly in variety of product sources. Phosphatidylserine exists in all biomembranes of animals, higher plants and microbes as an important component of cellular phospholipids, for example, it makes 10-20% of total phospholipids in brains of mammals, and plays essential roles in many cellular metabolic p…