NEM® is natural eggshell membrane ingredient, a natural source of powerful bioactive molecules shown to support joint health and flexibility. NEM® is composed of naturally occurring glycosaminoglycans including glucosamine, chondroitin and hyaluronic acid. NEM® is also a natural source of collagen. NEM® Flex also features manganese, which contributes to the normal formation of connective tissue. Also contains vitamin C, which contributes to normal collagen formation for the normal function of cartilage. Fast results achieved with a convenient one-a-day dose.