Our beautiful 10-year old lab suffers from joint problems and arthritis. This supplement came highly recommended to me by a horse owner. We had nothing to lose since she could hardly stand after laying in one position for a while. She has now been taking Cetyl-M for about 3 weeks and jumps and plays like a puppy. She also loves the taste, and she even reminds me if I forget to give them to her. There hasn't been enough time to judge the long-term effects of this product yet, but from early indications, I am very happy with the product.