Glyco-Flex SeriesGlyco-Flex is an innovative formulation for dogs with abnormal joint conditions. All products contain glucosamine and extract of perna mussel plus Dimethylglycine (DMG), an antioxidant thought to aid in oxygen utilization and circulation in the joints. Smoke flavored tablets. For dogs. Glyco-Flex I is recommended by veterinarians for puppies, adult dogs, and breeds predisposed to hip and joint dysfunction. Glyco-Flex II is formulated for adult and maturing dogs, especially sporting and working breeds. Additional ingredients include methylsulfonylmethane (MSM) and manganese, a mineral synergist of glucosamine. Glyco-Flex III is for geriatric and retired working and sporting breeds. This powerhouse adds the bioflavonoid grape seed extract, and the powerful antioxidants Vitamins C & E, L-Glutathione, and Selenium, all which fight environmental effects on a cellular level.