Natural Factors NEM - 500 mg - Clinically proven to significantly relieve joint pain and improve range of motion within 7–10 days. Clinically proven to support the production of Type II Collagen, a key factor in the protection and repair of cartilage. Also shown to improve the production of the synovial fluid that lubricates the joints and provides a natural source of Type I Collagen, glucosamine, chondroitin, hyaluruonic acid and calcium - nutrients that are essential for healthy joints. NEM offers relief without the potentially serious side effects of NSAIDs and other conventional joint medication.