NEW Vitamin D3 & K2 Selenium Copper Zinc Magnesium. Here's a breakdown of the benefits each provides and how they work together Selenium- 100%. K2 MK7-133%. Vitamin K2 - MK7. Bone and Heart Health : Works synergistically with vitamin D3 by directing calcium to the bones and teeth rather than allowing it to accumulate in the arteries, reducing the risk of arterial calcification.