Equine Gastric Ulcers are caused by erosion of the horse’s stomach lining, due to prolonged exposure to acid produced by the stomach. They occur with a wide range of severity, from an inflamed but intact stomach lining, through to widespread erosion and bleeding. In extreme circumstances the condition develops to such an extent that perforation of the stomach can occur, and this can be fatal. Such fatalities most commonly occur in foals, rather than adult horses.Ulser Gard works in four ways: * By neutralizing acid in the stomach with effective anti-acids* Soothing and coating the stomach lining* Healing any underlying ulcers* Firming StoolsNew Equine America Ulser Gard Solution 946ml provides a two month supply. You should feed a double dose for the first two weeks and then reduce to normal dosing of 15ml twice daily. Ulser Gard was found to be the most effective and affordable treatment by the 'Horse Journal' when compared with other brands and is the only ulser supplement to undergo intensive trials.