Dog arthritis can just as painful to the pet as to a human. Happy Jack offers a dog arthritis formula to help ease the pain and damage. The active ingredients, Glucosomine and Creatine, are natural building blocks in this dog arthritis medicine which actually help reverse the damage caused over time to joints, bones and cartilage and improve your pet's flexibility and mobility. Glucosomine is essential in helping the body regenerate connective tissue and helps reverse damage. Creatine is the energy enhancing component that increases strength and flexibility in muscle fiber. It has been recommended by professional breeders and veterinarians. Flexenhance was specially formulated to help with dyspasia and dog arthritis.