THE MOST COMPLETE ANDBALANCED FORMULA: Per serving you can be sure that this bone and immunity supplement has the most balanced approach to the ingredients available on the market. You receive Vitamin D3 400IU, Calcium 1000mg, Magnesium 400mg, Zinc 10mg, Vitamin K2 MK-7 a and Copper 2mg. Each ingredient perfectly balances and contributes to the other.