New research is focused on the synergistic relationship between vitamin K (specifically, vitamin K2) and vitamin D3, especially in terms of bone strength and cardiovascular health. Ortho Molecular Products is the exclusive provider of MenaQ7Pro®, the most widely studied form of vitamin K2 as MK-7.
https://www.orthomolecularproducts.com/assets/1/30/OMPI-VitD3K2Liquid_PDN-A.pdf