His phenobarb levels were checked in Sept and his blood levels showed slightly elevated liver enzymes but not enough to be worried about. His thyroid has been checked many times and is always good. His belly is swollen but when he eats our other dogs food (if I'm not fast enough) he gets an upset stomach and swells up. He is always ravenous but we thought the increase in appetite was from the phenobarb. His peeing seems to be more than normal and I've noticed that his urine output is more, but I can't be sure if he's drinking more because Jake drinks out of the same water dish.
Thank you very much Candy,
I will follow up with the vet.