Vitamin K2 exerts a more powerful influence on bone than does vitamin K1.* Vitamin K2 is a series of molecules known as menaquinones. The most common and well-studied of the menaquinones is MK-4. Thorne Research's vitamin K2 is MK-4. Vitamin K is essential for normal cell formation and to help maintain a healthy cardiovascular system.*
It is essential to maintain an optimal level of vitamin D through all stages of life, from fetal development to old age.* Vitamin D helps support a number of important systems in the body, including muscle and bone health, as well as cardiovascular and immune function.*
Combining vitamins D and K might provide synergistic protection of these systems.* One study in postmenopausal women found a combination of minerals along with vitamins D and K maintained healthy artery elasticity, compared to two other groups of women who received either minerals with vitamin D but not vitamin K, or placebo.*
Thorne Research's Vitamin D / K2 Liquid is in medium chain triglyceride oil, preserved with mixed tocopherols.