Value SizeUp-FormulatedSuperior Skeletal SupportStimuCal™ Microcrystalline HydroxyapatitePotassium Citrate & Natural MK-7StimuCal™ with Bone Stimulating ProteinPromotes Bone DensitySupports Cardiovascular HealthDietary SupplementGluten FreeNon GMOBone-Up® provides StimuCal™ ossein MicroCrystalline HydroxyApatite (MCHA) (from free-range New Zealand calves), which includes the superior combination of the inorganic calcium lattice of MCHA within an organic protein milieu. StimuCal™ is rich in native type I collagen - the predominant protein found in bone - and has been clinically demonstrated not to disproportionately spike calcium blood levels as do other forms of calcium, such as the carbonate and citrate salt forms. StimuCal™ is combined with D3 and vitamin K2 (as MK-7 from natural fermentation [a more bioavailable form of vitamin K]) to support the proper deposition of calcium into the bone matrix, thereby maintaining skeletal integrity, as well as supporting cardiovascular and arterial health. Potassium citrate is a systemic alkalizer 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.