I have three of mine on it and they are feeling much better. by from 02/23/2014Been using this for several years for my cat for off-label bladder stone issues, not arthritis.He never had a recurrence, and the ability to sprinkle it on his food is a pleasure.you by have from enoughCAVEAT:sureGreat Product by 2 Knitcatz from Maryland01/14/2014Recommended by my vet.