Cosequin is a patented, scientifically researched, nutritional supplement designed to help dogs maintain healthy joints. As dogs age, it is common for their joints to become less flexible which impacts their mobility and quality of life. You may have noticed that your dog has difficulty walking up stairs or jumping on the bed. While he used to be eager to play, now he is content to rest. Even at younger ages some dogs are subject to joint health concerns, which effect flexibility and mobility. Cosequin has an exclusive formula of three ingredients: (TRH12) chondroitin sulfate, (FCHG49) glucosamine hydrochloride and manganese ascorbate. These ingredients have been scientifically formulated to support and maintain the health of your dog's joints. Cosequin works together to maintain the structure of the cartilage in your dog's joints while inhibiting the enzymes that break down cartilage.