Platinum EasyCal Bone Builder - For calcium to be deposited in the bones it must first be absorbed.  Magnesium and vitamin D have been examined extensively for their role in aiding calcium absorption. New research indicates that other co-factors play a significant role as well in calcium absorption: zinc, boron, essential fatty acids and vitamins C, D3, K and E. EasyCal Bone Builder combines all of these co-factors for optimal absorption, leading to stronger, more healthy bones and teeth. Particularly effective for seniors, and those whose diets are low in calcium.