My oldest cat of 15 has had a thyroid problem and kidney problem since the age of 9 and has took tablets daily for this and she i fine and doing fine. My problem is she has started to show signs of rheumatism/arthritis. First time was a month ago and the vet put her on a small dose of metacam (I wasn't sure if she had banged her leg or it was rheumatism/arthritis) and I was told to keep her in for a week which I did and she became completely better again. Until a few days ago and she has started walking to the side again and seems stiff always after napping. I decided to look for supplements on the net and then was alarmed when I kept seeing that metcam was harmful, though she has had it several times in her life and has always been perfectly fine. I asked my vet about it and she said any medication with my cat is a risk because of her kidney problems but metacam in a small dose 2.5ml is fine and will take her pain away. She said there is no other alternative. So here are my questions: Are there alternative medication I can give her? How many types of rheumatism/arthritis are there and how would they go about diagnosing that? Is there any natural supplemnets which would help her? Thanks in advance.