Rupert is a 14.3 Irish gypsy cob and has arthritis in all four legs, he has got it in his coffin joints, both hocks in the worst place possible and has the start of it in his knees. I have tried most of the supplements going, and had him on a devils claw supplement too, and when he was really bad he was on bute as well, prescribed by the vet. He had to have steroid injections in his hocks 18 months ago and coffin joints four years ago. Some one told me to try another joint supplement, but the shop didn’t have any so they suggested Blue Chip Dynamic. Well, that was two years ago and I am still using it. I don’t have to use the devils claw supplement anymore, and he only has bute if we are going on a fun ride or jumping or doing a dressage test, and he is still going strong.