The effectiveness of Glyco-C-Mine as a nutritional supplement is due to the unique biological activity of all 57 identified nutrients in the Perna Mussel. Perna also contains all major classes of glycosaminoglycans including Chrondroitin -4- and -6- Sulfates. The inclusion of Glucosamine and Vitamin C in the ascorbate form supplies additional nutrients that also support proper joint function. 90 Chewable Tablets