i do agree that ace does make the animal "nuttier"...we had a proud cut gelding with strangles and he wouldnt let us cut the pocket so it could drain so the vet gave us "ace" and he ended up worse then he was before...so we called the vet back and she said who ever gave us ace probabley didnt understand our situation fully and the vet ended up giving us "rompin" and he settled right down and got the strangles dealt with