Cal-Mag is a product containing calcium and magnesium elements in regular adjusted dosages with the beast organic compound �Citrate� which is easily assimilated and metabolized. This provides the maximum benefit of the Cal-Mag formula. Calcium Citrate Calcium is the main element required for bone formation as well it has an essential role in the various vital activities of the body like blood coagulation , muscle contracting , neuromuscular synchronization. Magnesium Citrate Magnesium is a natural occurring mineral , Magnesium is important for many systems in the body , especially the muscles and nerves . Magnesium citrate is used as supplement to maintain adequate Magnesium in the body.