I have a dilemna now - I got back from picking up the tabs and he was tearing round the garden. I don't know if its the weather or not being on meds but the whole idea is for him to feel better. As hard as it is, I would rather have him for a few years happy than 10 years feeling sick and miserable. I will make an appointment at the vet and depending on what he says, I will go to another vet (maybe next door )