A combination of high absorption albion chelated calcium and magnesium in a 2:1 ratio along with plenty of Vitamin D.  Easy to swallow capsules. Excellent for those that want an easy to absorb calcium, magnesium and D without any other minerals or vitamins.  NOTE: this formula contains quite a lot of vitamin D.  Use caution if you are used to taking extra Vitamin D as this formula contains 4000 IU per 4 capsules.‡