My Pitbull Lab mix had his knee surgically repaired when he was three. He recovered quickly and we were walking two miles a day at a brisk pace. As the years passed he unfortunately slowed down. He is now seven and we were down to about a half mile at a snails pace. I really enjoy our walks and I was devastated by his slow down. It broke my heart to watch him struggle to complete our short walks. I had the vet prescribe him Deramaxx but there was no change. I decided to try GlycanAid HA and the results have been fantastic. As soon as we walk out the door he pulls on the leash and I couldn’t be happier with his recovery. Thanks for this great product.