Has anyone tried this?  Opinions?

I take the Human Stride Rewind and all my 3 horses on the Stride Rewind pellets.  Works for me and also after I started using it on my horses my farrier asked what I was doing as they did not protest as much.  My horses are from ages 30, 24 and 19.  All past barrel, roping horses and was hauled hard.  So they have leg, feet issues.

Been giving it to my three for probably over a year now.  Ages 17, 14 and 7, all barrel horses.  Love it!