Magnesium 5000 (10lb) Calming/Metabolism/Muscle Function Support for Horses.

My always over reactive colt (gelding) 4.5 yr old was always a hard to catch guy in the pasture would walk away from me ALL the time even with treats, grain etc. I decided to add Magnesium to his diet and Day 1 he walked right up to me int he pasture i thought okay this is a fluke? since being on it it has not changed he walks up to me follows me around completely different horse in way of being so over reactive with most everything. i can even walk up to him and fly spray him now in the pasture without him walking off. I decided to put my rescue mare on it since she get anxiety when haltered up. she also comes right to me now but she is new here and i wasnt sure of her personality anyway.