I once tried 900mg ED of
Phosphatidylserine and saw no benifit. I was hoping to suppress cortisol from my chronic allergies.
Most of the studies I have seen used injections of bovine
Phosphatidylserine at 50-75 mg. Comparison of the studies suggests that
Phosphatidylserine is only about 6% oraly available.
Fortunately testosterone is a cortisol antagonist, so anything that raises test will suppress cortisol.