I put my mare on it back in May. She was on Ex-Stress for years with no real effect but since it was rated #1 by Horse Journal - I figured it was the “best” out there and was scared to take her off!
I actually called Carla (at Performance Equine) to talk to her about her other product, Focus Equine, and after describing my mare to her, she said the mare sounded VERY mag deficient. So I ordered in a pound of the dimagnesium malate and a 7 day trial of Focus. Within 4 days, I had a new horse.
Mag Ox is not as bio-available as Dimagnesium malate. Dimag is the one the most bio-available forms you can get and Carla carries human grade dimag.
I highly suggest calling Carla and speaking with her. My mare will be on it forever as it has made a HUGE difference for her. I did put the mare on Focus for the summer as she had some emotional baggage tied to work - because her muscles couldn’t work efficiently and therefore she would get all beside herself and escalate into emotional meltdowns. For YEARS people/trainers would tell me she just had no work ethic and that it was a training issue. My husband simply said the mare was nuts. Pfiff! My mare is so much more at ease and working beautifully. She also stopped bolting her grain and inhaling her hay to the point of mild choke.
So yes, being the owner of a highly emotional, basketcase mare - dimagnesium malate has made all the difference in the world.