Perna is a dietary supplement to support proper connective tissue & joint functions. Perna is pure, freeze-dried Green-Lipped Mussel (Perna canaliculus) from New Zeal&. Its a rich source of amino acids, protein, naturally chelated minerals & glycosaminoglycans (GAGs) including chondroitin -4- & -6- sulfates. GAGs make up the core of all connective tissue. Perna supports the health, comfort, flexibility & hydration of synovial fluid & connective tissues including joints, ligaments, tendons, cartilage & intervertebral discs.