awe poor kitty.. So this may sound really strange but there is this enzyme called serrapeptase you can buy it online from amazon. it is safe for animal and human consumption. But i deal with a lot of joint pain and I have a 12 year old dog who has hip displasia. I take it and also give it to my dog. I hate to see animals suffer but if you can give it to the cat it may help him... it wont hurt if it doesnt.