Glyco-Flex® is a nutritional joint supplement for cats throughout their lives. It is excellent for all aging breeds that are predisposed problems. It is made from pure freeze-dried Perna canaliculus. Glyco-Flex® is an exceptional nutritional supplement for the maintenance of connective tissues including joints, synovial fluid, tendons, ligaments, and cartilage. Each chewable contains 300 mg Perna canaliculus.