The World's Most Advanced Bone Support System Calcium & Magnesium with Vitamin D3 & K2 Vitamin & Mineral SupplementAdequate calcium and vitamin D3 throughout life, as part of a balanced diet and healthy lifestyle, may reduce the risk of osteoporosis. However, calcium supplements should always be balanced with magnesium. Ionic-Fizz Super D-K Calcium Plus provides calcium and magnesium in their purest, ionic form, in a perfect, 5:6 ratio, and with a host of other nutrients - like Vitamin K2 in its Menaquinone-7 form and 1000 IU's of Vitamin D3 - that help insure its absorption and utilization. These things make Ionic-Fizz Super D-K Calcium Plus the most supportive calcium supplement available anywhere.