This wonderful product is identical to Ionic-Fizz™ Calcium Plus, except that it provides 1000 IU's of Vitamin D, and also Vitamin K in the body's preferred, menaquinone 7 form. This newly found form of Vitamin K is far more expensive than the phylloquinone form, but is also far more effective in the body. Ionic-Fizz™ Super D-K Calcium Plus can be used with any of our Vitamin D series products, or with any multiple that does not supply over 5000 IU's of Vitamin D per day.