You are right, Rudy takes a 1 unit injection every 12 hours. He is eating Instinct Limited Ingredient Turkey Formula (by Nature's Variety). Rudy has had severe allergies for years. He has had many cortisone shots over the years to try to control his allegies. When his allergies flare up, he scratches his ears til they bleed and licks his stomach bald. We made a long distance move 2 or 3 months ago. When I took him in to see the new vet here (about a month ago), the vet put him on Hills Science Diet ZD (for skin allergies) and gave him a cortisone shot. A couple weeks afterward, I noticed he was losing weight (he lost a pound in 3 weeks), was vomiting occasionally and was roaming the house howling continuously. I took him back to the vet and after taking blood and urine samples, the vet said he was Diabetic with his blood work coming back at 530 BG. The vet started him on the Vestulin and hes has been extremely subdued ever since. He doesn't get up off the sofa. He sleeps or lays there motionless with his eyes open. He used to be fairly active. His appetite comes and goes. And he has experienced some vomiting and diareah. But he has not vomited for the last few days. I was so worried that I started testing his BG because I worried that his listlessness might be hypoglycemia. I have only tested him a handful of times. I know I should test him more often but i hate sticking his ear. I dont like the thought of hurting him. I guess I'll need to get over that. Before all this happened he weighed 12 pounds. Now he weighs 9 pounds. He is almost 16 years old. After reading about Scince Diet ZD online (39 percent carbohydrates), i switched him to Instinct wet food. He only eats wet food, no dry. He has been eating Instinct for the last 4 or 5 days. I am so afraid of losing him. Wish I had said no to the ZD food, and of course not gotten him the cortisone shot. Too late now. I just am hoping he can get through this. And I don't want to make anymore mistakes. I was wondering if his malaise is the diabetes or if he may have more going on. But I have had no experience with feline diabetes.