From the Manufacturer What is a Vitamin K2-Restored Calcium Supplement? As everyone knows, calcium keeps bones strong and dense. But what you might not realize is that dietary calcium requires adequate amounts of other vital nutrients to be most effective. This composition therefore combines readily absorbed calcium with additional minerals that are good for bones, such as vitamin D3 and vitamin K2. Vitamin D3 is essential for bone-healthy calcium. Bone health also depends on other nutrients, such as silicon, magnesium, boron, zinc, manganese, and vitamin K2. Bone Restore Calcium Supplement with Vitamin K2 1. Helps maintain bone density and strength with four types of calcium plus vitamin K2 (MK-7)2. Encourages the proper absorption of calcium through vitamin D3.3. Contains nutrients like magnesium, zinc, and others to support and preserve bone health in general. Bone Restore* Calcium Supplement with Vitamin K2 120ct