A 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 surrounding connective tissues of the spine. Truth: We pledge total truth in labeling. Our family of products contains only the purest and most potent ingredients. Guaranteed.