Phosphatidylserine, rating as a natural product to increase energy levels ad hoc (when taken occasionally)

Phosphatidylserine (abbreviated Ptd-L-Ser or PS) is an important phospholipid membrane component (i.e. component of the cell membrane) which plays a key role in cell cycle signaling, specifically in relationship to apoptosis.

Phosphatidylserine is also used as a supplement (phosphatidyl serine).