Yes, and it works. I don't know if it was a coincidence or not, but my horses have also seemed just a little spookier with it as well........I have wondered if it is like us being "woke up " from a little drop off nap.........not sure however.
It does work very well on horses with over abundance of adrenaline :). That is the major ingredient in EX Stress, a very good product.......
I have used Allay by Adeptus on two different horses with great results. Natural Calm is a supplement I take sometimes. Just watch for loose stool that is a sign your getting to much magnesium. Great stuff and very important for muscle soreness, hyper, stress etc.