In March Barney went to the vet because he was urinating frequently. He was given metacam, covenia and two anaesthetics while there, not kidneys but possible urine infection and now heart murmur. Now 6 weeks later he is insecure, lost weight, has a poor appetite,wails as if in pain, had a seizure last week, attaxia and constipation. The vet says more metacam but I know that's not good for an old cat - he is 16 years old. I'm trying homeopathy and nutritional supplements but I fear I am losing him - any advice please as I am desperate