I tried Young Again No Carb with my non-diabetic cat (a large Maine Coon), and he really likes it. Be sure to mix it 1/4 to 3/4 of the current dry food at first. I mixed 1/2 - 1/2 and he had horrible diarrhea. I added more of his regular food and he's fine now. I just ordered my second bag. I'm going to still mix it, but try to wean him off his old dry to try to avoid the problems his roommate Zoey has. She occasionally gets a nibble or two, but I don't worry so much about it because she isn't getting a full dose of carbs! My big guy also seems to eat less, which is what the Young Again website says should happen.