Ultra Bone-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 citrate and carbonate salt forms. StimuCal™ is combined with vitamin D3, vitamin K2 (as MK-7 from natural fermentation [a more bioavailable form of vitamin K]) and JarroSil® Activated Silicon® to support the deposition of calcium into the bones, as well as to assist in building up the organic bone matrix. Also included for optimal osteo support, are potassium citrate (systemic alkalizer) and MBP® (Milk Basic Protein) (activates osteoblasts and decreases osteoclast activity). Bone Up® also supports cardiovascular and arterial health.