It didn't work on those horses, fantastic stuff for shine but the ones I saw lost weight !
Ring saracen instead, they have all sorts of calming type feeds..
I feed it, I put one scoop in a bucket and soak it over night, then he gets a generous half scoop of it in his AM and PM feed, that will last me for 2 days and then I make a new batch up. He is definitely shinier and it has put some weight on him, he's not a good doer at all but this has improved him alongside alfa oil and speedibeet.
I make up 2 Stubbs scoops of copra to 7 scoops of water and that lasts 2 horses, 1 pony and a donkey for an am and pm feed. The horse who competes also has mix added.
Don't keep it made up for longer than 24 hours as it goes rancid.
Hope that helps!