Science-Based NutritionMicrocrystalline Hydroxyapatite CalciumBone Health MaintenanceDietary SupplementNon-GMO / Gluten Free / Soy FreeDoctor's Best Calcium Bone Maker Complex with MCH-Cal supplies key bone nutrients in their most bioactive forms. MCH-Cal supplies natural Calcium and Type I Collagen, the predominant protein found in bone. Vitamin C assists bone matrix formation. Vitamin D3 and K2 help support the absorption of calcium into bone and help protect blood vessels from arterial calcification.MCH-Cal has been clinically demonstrated not disproportionately spike calcium blood serum levels.Broad nutrient spectrum for healthy bone replaceOptimized to ensure safe and effective calcium utilizationContains high absorption ingredientsHelps promote skeletal, muscular, overall health and well-being