Dasuquin by Nutramax! I have an older boxer with spondylosis & arthritis and this supplement had her playing like a puppy again. I did not realize how much pain the dog must have been in until she had been taking Dasuquin for a week or two, wow it was like a different dog. The stuff's a bit pricey but all natural and no side effects. Amazing AMAZING supplement, just make sure to get it from your vet and not from Amazon... apparently there are knockoffs being sold under the same packaging and you can't trust what you buy online and won't see the same results. (BTW I've been a lurker for quite a while but finally created a logon just to post this, so it goes to show ya how strongly I feel about this stuff... it gave my sweet old dog a new lease on life.) Good luck with whatever you try for your dog AKCHOPPER!