Supports heart function, circulation, nerve function, bone mass and muscle tone. This calcium product does not contain vitamin D. Supplements in our Bio-Max Series use forms of nutrients that have clinically proven to be among the best absorbed and bioavailable. Hypoallergenic. Gluten and casein free. Capsules are plant based. Ultra Tested. <br/><br/> Calcium is a mineral that is an important component of a healthy diet and necessary for life. Approximately 98% of the body’s calcium is stored in bones and teeth. Calcium is critical for building bones and teeth during childhood and for maintaining strong bones and teeth thereafter. In the rest of the body, calcium supports heart function, circulation, nerve function and muscle tone. <br/><br/> Vitamin D increases the absorption of calcium, so it is important to make sure your diet contains sufficient amounts of that nutrient. <br/><br/> Kirkman’s calcium capsules use Bisglycinate amino acid chelate, which has been demonstrated to have superior absorption qualities.