3 Per Day BoneUp from Jarrow Formulas is a superior calcium formula with microcrystalline hydroxyapatite and natural MK-7 to support bone density. Bone Up provides type I collagen, osteocalcin and specialized bone-stimulating growth factors, which includes the superior combination of the inorganic calcium lattice of microcrystalline hydroxyapatite (MCHA) within an organic protein milieu. This formula also features StimuCal(TM) which also provides bone proteins, including type I.