Calcium amino acid chelate, prevent osteoporosis and dental problems by keeping bones and teeth strong and healthy. The calcium strengthens the musculoskeletal system. The chelate calcium no need vitamin d3, it can be absorbed by the body directly. This is a new generation of calcium supplement. Calcium and l-aspartate are 100% chelated, have a molecule structure, particles are about 2-80 nanometers. The molecule structure stays whole and can easily pass through the intestinal wall and are absorbed intact, no need vitamin d3. University of virginia in the united states made a test and proved that the absorption rate of chelate calcium is higher than 90%, its absorption rate is three times higher than other types of calcium. Amino acid chelates are a stable form of mineral compound that does not break apart during digestion, it's molecular calcium, not "naked" ionized calcium, so it can't work with oxalate to form calcium oxalate, never causes concretion or other side effects. This characteristic is unique with other calcium products. --safe --no side effect --no concretion --good solubility --high absorption --high bioavailability.