Glyco-Flex III for Dogs Stage III - Restore is part of the Vetri-Science® Stages of Life program to support joint health and treat dog arthritis. GlycoFlex III is formulated for maximum support of advanced joint dysfunction and is recommended for geriatric, retired working and sporting breeds. In addition to glucosamine Glycoflex for dogs contains perna canaliculus, an extract from the New Zealand Green Lipped Mussel, which is rich in amino acids, enzymes, vitamins and nucleic acids that help maintain healthy joint and connective tissues and treat dog arthritis. Use Glyco-Flex II dog joint supplements to restore your dog's joints and connective tissues and relieve the pain and stiffness of dog arthritis.