If you try Sarcosine - please be sure not to go over the 4 grams per day level that has been used in the research studies. Researchers have noted that high levels of Sarcosine (or Glycine, or D-serine) can actually damage your brain cells - which would obviously be counter productive.
Here is some info on this. Also - don’t mix Sarcosine, Glycine and D-serine - because you could get too much of the compounds targeting those brain receptors. Click on my post below to read the full information on this issue.