DaVinci Laboratories of Vermont, Disc-Discovery, 180 TabletsA Bovine Cartilage Manganese Supplement to Support Back Function A Source of Chondroitin 4 and 6 Sulfates Gluten Free Made with Non GMO Ingredients A unique formulation of bovine tracheal cartilage and manganese with other supporting nutrients for spinal support. Bovine tracheal cartilage is rich in two types of glycosaminoglycans, Chondroitin 4 and 6 Sulfates. They provide the building blocks for nourishment and support of spinal discs and the