Vi-QUINONE is natural vitamin K2 a variation of vitamin K that's important for bone, vein and heart health. Discovered in 1950, is present in a variety of fermented foods and natural animal foods. However most people do not consume enough vitamin K2 to meet their daily needs. Our bodies convert vitamin K1 into vitamin K2 - but only when vitamin D is present. Studies have shown that nearly 90% of the world population are deficient in Vitamin D which means their bodies cannot properly convert Vitamin K1 into active Vitamin K2. Vi-QUINONE was formulated by Vivitality Specially for WOMEN* *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.