GLUCOSAMINE CHONDROITINE + MSM from Weider . Protective food supplement for joints and tendons. Glucosamine is a substance that is formed from a combination of amino acids in fish cartilage. This is known to promote the health of our joints and stimulate the formation of synovial fluid, in charge of functioning as a shock absorber between the cartilage surfaces. Chondroitin is the main component of cartilage tissue and can improve joint function. MSM (methyl-sulfonyl-methane) supports the action of numerous vitamins and minerals, its function is based on ensuring that nutritional substances are absorbed more quickly and that they act for a longer period of time.