Choline Bitartrate is an ok source of choline, but it's likely not nootropic.
Phosphatidylserine is good for reducing cortisol levels, and that's about it.
I remember taking PS for the first time in college and noticing a very noticeable effect. It doesn't produce the same effect in me any more, but I attribute this to normal PS levels. I continue to take it based on my convincing first experience, even if this is not a scientifically valid reason to take it.
Broader claims are found on http://www.phosphatidylserine.net/
I'm looking for research studies to support it, but after 30 minutes of google searches, the best I could come up with was this page:
http://www.discount-...idyl_serine.htmPhosphadidyl serine does all this through the following actions: PS stimulates the release of dopamine (a mood regulator that also controls physical sensations and movement), increases the production of acetylcholine (necessary for learning and memory), enhances brain glucose metabolism (the fuel used for brain activity), reduces levels of cortisol (a stress hormone), and boosts the activity of nerve growth factor, which oversees the health of cholinergic neurons.
The nerve cell membrane is the site where molecules of sodium and potassium exchange electrons, causing the electrical impulse to be generated. This bioelectric current then travels along the membrane to trigger the release of neurotransmitters. These are the chemical messengers that cross synapses (gaps between nerve cells) to relay information to neighboring nerve cells. This sets other electrical currents in motion -- along thousands of other nerve cells. This happens billions of times each second, and is how the brain and nerves coordinate and communicate with the rest of the body.
Phosphatidyl Serine has a very important function in the nerve cell membrane. As a key bio-structural molecule, PS provides vital support for the membrane proteins that enable nerve cells to communicate and grow.
Untill proven otherwise, I agree with Rwac.
Most experts belief that PS taken orally is broken down even before it reaches the BBB or is not able to through it.