Ortho Molecular - K-Force Vitamin DVitamin D plays a highly significant role in the body for maintaining hormonal balance, healthy bones, heart and blood vessels, and elevating mood. While our primary source of vitamin D is synthesized from the sun, it is difficult to obtain adequate amounts from sun exposure alone. With K Force, vitamin D works in synergy with vitamin K to support and maintain bone, cardiovascular and immune health. 60 Count *Due to high demand, delivery time may be 1