My OC was butted really hard into a wall a few times by a goat several years back. It took her a long time to heal and she is ten now. The past couple of years, she has gotten arthritis in her hips and back and this past winter has been quite hard on her. I've been giving her glucosamine, chondroitin and MSM tablets since she was injured. I KNOW that they really helped her back then and I believe that is why she has done as well as she has for so long. I use velveeta or cream cheese to hide them in, too. She is on a constant diet because she can't exercise a lot or she gets so stiff she has to be carried at night, so that little cheese treat is snapped up before she even thinks to check it. She is also getting a baby asprin on the really bad nights as that was recommended by a vet.