Since 1947 Comprehensive Nutritional Bone Support Formula Non-GMO Gluten & Wheat Free Certified Gluten-Free Dietary Supplement This advanced, proprietary formulation provides a comprehensive blend of nutrients which support and promote bone health. The components include the important D3 and K2 vitamin forms along with a host of chelated mineral forms. Together, these ingredients work to promote proper bone mineralization. When used as suggested, this formula provides 100% of the daily value for calcium. Adequate calcium as part of a healthful diet, along with physical activity, may reduce the risk of osteoporosis in later life.