THE AMAZING COMBINATION: Vitamins K2 & D3 work together to help absorb and transport calcium to the correct places on the body. Most people know the benefits of Vitamin D (maintaining strong bones, immune system support, healthy muscle function, etc.), but many don't know that Vitamin D assists Vitamin K2 to work at it's capacity. Our Vitamin K2 (MK-7) is a natural source and helps support healthy bones. Dr. Berg recommends using the combination of 10,000 IUs of D2 and 100 mcg of K2. STRONG BONES: Vitamin D3 normally helps absorb calcium from the intestines by a factor of 20X. With this complex, you'll get the benefits absorption as well as transporting calcium into bones through the help of K2. Vitamin K2 (as MK-7) directs the calcium to your bones instead of soft tissues, where too much calcium could be problematic. HEALTHY CARDIOVASCULAR SYSTEM: This formula not only promotes the proper absorption of calcium with D3, but the correct distribution to your bones where it should be normally.