My cat is three-years-old male. He had been very healthy until November 2009. I switched the food from Science diet to blue buffalo. After almost two weeks, he started to throw up several times a day, sometimes immediately right after eating. My vet tried Famotidine Inj. Cerenia Inj. Small,Dexamethasone Inj and Reglan. Blood work showed everything good except eosinophilia high, they gave him deworm medicine. X-ray showed thicker intestinal wall due to inflammation, endoscope and biopsy turned out no cancer but massive intestinal ulcers and inflammation. I refused to the treatment of steroid due to the side effects which worsens the ulcers. I tried herb, enzyme. He still vomits daily. I am trying pepcid now. He is fed raw meat diet with bony. Does anyone have same experience with my cat? Nothing my vet can do now for my cat. He still eats and drinks but low energy.