Our 12 yr old dog was diagnosed two months ago with Cushings, and we have her on Trilostane. There is another med, Lysodern, which I believe is much cheaper. The Trilostane is fairly new, and costly. Molly had every symptom of cushings, and most of them have improved, but she still is drinking a tremendous amount of water, and peeing every hour. We had her retested today to see if shes getting the proper amount of meds, I don't know how long a dog will live with Cushings, I believe with the meds its about 2 years. What symptoms does your dog have?