Has anyone else used GNC Ultra Mega High Calorie Booster or something similiar to supplement their diabetic kitties food? If so have you found it to effect their blood sugar?
I think that most canned cat foods are considered nutritionally complete. Unless the vet has said, or the bloodwork indicates, that he is lacking one or more nutrients I don't know that he would need supplements. Bob for instance is low on potassium so I have to supplement that.
Oops I just read in one of your other threads that cartman(awesome name!) hasn't lately seen the vet maybe? Can you see if they could possibly get a copy of his bloodwork report from when he was diagnosed? That could tell you if there's anything high or low with his blood beyond the diabetes.
Carl