My vet has called several specialists and they are recommending Atopica. I have been unsuccessful in regulating Xuxu and the problem seems that his DM is secondary, but we haven't found the secondary cause. The last tapes showed him as not having Cushing, but he is cushioned. The specialist is recommending Atopica. In reading up on the internet, it sounds like there could be some serious side effects. I'm wondering if anyone on the list has had experience with side effects. I've done a search on the Board, and only found on reference for anorexia. Is there anyone else that has had experience with Atopica?