Just wanted to add, if you wish to give a supplement another go instead of going rx route, Synchill ime is worth a try.
It contains 5-HTP (instead of l-trypthopan) as well as l-theanine and melatonin.
I have seen result with in a couple of horses within 2 hrs of administering.
https://synnutraequine.com/product/synchill-daily/
