Bart has always been a very intense retriever. He lives his life solely to retrieve. It broke our hearts to see the pain he was experiencing due to osteoarthritis in his elbow after only a short period of playing fetch. The pain became so severe we stopped his daily routine of playing. My wife and I couldnt stand seeing Bart suffer, so we decided to try Vet-Stem to see if it would alleviate his problems, and it did. Bart is now 6 months post surgery and he is totally like a puppy again. Just like when I first received him. – Jim Williams & Bart