Hey so I have a 23 year old paint gelding. He has developed arthritis in his back hocks, really bad in the right. Also in both knees. He always clicks when're I pick up his hooves. Now with it being colder it's even worse. My farrier suggested that I put him on a joint supplement, but I don't know what to try. I've had him on MSM before but wasn't seeing a big difference, so I took him off of it. So any suggestions or experiences would be great. Thanks.