K2-D3 is an excellent adjunct to one's bone care regimen and general health. Menaquinone-7 is a natural natto-derived Vitamin K2. It is documented for its role in calcium metabolism benefiting bone density and cardiovascular health. Contrary to vitamin K1, MK-7 offers far superior bioavailability and bioactivity due to its extended half-life in circulation. With the addition of D3, this supplement promotes bone calcium via 2 essential mechanisms. K2-D3 offers optimal dosing of these bioactive vitamins and should be considered equally as important to bone health as calcium itself.