Vetri-Science Glyco-Flex III Canine Bite-Size Chews for Dogs 60 Mini (Set of 2) High quantity of glucosamine and the inclusion of MSM ,, Recommended by veterinarians for geriatric and working dogs as well as a follow-up to orthopedic surgery Only GLYCOFLEX products are formulated with GlycOmega Perna Supports joint and connective tissue functions while supporting joint comfort GLYCO-FLEX III Canine represents Stage III of our comprehensive stage of life program for dogs needing maximum joint support