This product may fulfill its purpose for human use, but in horses I’ve had only negative experiences. Epsom Salt is mainly used to soak the horse’s foot during a treatment of an abscess or a bruise. I’ve used this product in that fashion several times when working for other people in my younger days. Though the Epsom salt may have accomplished it’s purpose in treating the infected/bruised foot it also had following negative results. Even though the abscess often broke out at the coronet band, the horses often kept going lame for several days. I have noticed that the feet, which were soaked in the Epsom Salt repeatedly, have contracted/dried out noticeably and also got very hard (hooves contracted in such abrupt way are significantly deprived from sufficient blood supply and the consequences could be severe.) I believe that this product removes the vital natural ingredients from the foot, thus damaging it while prolonging the recovery of the afflicted hoof. I find no use for this product in horses.