Green lipped mussel (we recommend Food Science of Vermont brand which is freeze dried), from New Zealand. is a rich source of amino acids, protein, naturally chelated minerals, chondroitin, and glycosaminoglycans which make up the core of all connective tissue.  New Zealand green lipped mussels are said to support the health, comfort, flexibility and hydration of synovial fluid and connective tissues including joints, ligaments, tendons, cartilage and intervertebral discs.  We give these to our 11 year old Old English Sheepdog and they clearly make her feel better.