GlycoFlex 1 3PACK Hip and Joint Support for Dogs, (360 Chewable Tablets) GlycoFlex I contains Perna canaliculus, Glucosamine HCl, and Dimethylglycine to help support the rebuilding of collagen, cartilage, and joint structures.It is part of the VetriScience stage of life program. STAGE 1, REINFORCEMENT, for younger dogs or dogs predisposed to hip or joint dysfunction for the maintenance of optimal joint health. GlycoFlex I supports the structure and function of joints and connective tissue for puppies and dogs throughout their lives. VetriScience Laboratories GlycoFlex 1 Chewable Tablets are recommended by veterinarians for puppies and dogs with an early need for basic joint support. It features 600 milligram of perna caniliculus, 500 milligram of glucosamine and 100 milligram of our patented DMG. The perna used in GlycoFlex products is the GlycOmega brand perna canaliculus exclusive to VetriScience Laboratories. GlycoFlex products contain perna, an edible green-lipped mussel from New Zealand. The perna has been freeze-dried so that the whole organism is included, providing many of the factors necessary to maintain healthy connective tissue. It is rich in amino acids, polypeptides, naturally chelated minerals, fatty acids, glycosaminoglycans (GAGs), vitamins, glycoproteins, protein complexes, polysaccharides and the nucleic acids RNA and DNA. Perna contains all major classes of GAGs including chondroitin 4 and 6 sulfates and hyaluronic acid that occur in connective tissue such as joint cartilage, tendons, ligaments, and synovial fluids.