Osteocare® contains the preferred D3 form of Vitamin D. Osteocare® Tablets Contain The Following Active Ingredients Per Two Tablets: Calcium 800 Mg; Magnesium 300 Mg; Zinc 10 Mg; And Vitamin D3 (400 Iu) 10 µg; Selenium 50 µg; Copper 1Mg; Manganese 0.5 Mg; And Boron 0.6 Mg.