Promotes Bone Density Gluten Free Dietary Supplement Microcrystalline Hydroxapatite, Potassium Citrate, Natural MK-7, JarroSil Activated Silicon Bone-Up Powder utilizes ossein MicroCrystalline HydroxyApatite (MCHA) Complex (from free-range New Zealand calves), which is the original bone matrix of tricalcium phosphate, collagen and related proteins. Bone-Up Powder also contains vitamin D3, vitamin K2 (as MK-7 from natural fermentation [a more bioavailable form of vitamin K]), and Jarrosil Activated Silicon (a biologically active form of silicon) to support the proper deposition of calcium and maintenance of bone health. Potassium Citrate, a systemic alkalizer, is also added for optimal osteo support. Health Claim: Adequate calcium and vitamin D as part of a healthful diet, along with physical activity, may reduce the risk of osteoporosis later in life.