Flex 2500 Soft Chews - 240 ct - Joint Health for Dogs Combines Glucosamine, MSM, Creatine, Omega-3 Fatty Acids and Antioxidants. Supports joint function and flexibility and helps strengthen joint cartilage. Formulated with a synergistic blend of antioxidants and Omega-3 Fatty Acids. In a palatable granule formulation.