Calcium Complex is a 100% vegan Food supplement that is intended to supply 100% Food calcium.  Research has shown in groups of people who consume 300 mgs of  Food calcium per day or less from plant sources that they have low incidences of osteoporosis.100% Food Calcium Complex is a plant source of calcium.  It does not contain calcium mineral salts such as calcium carbonate, calcium citrate, or calcium lactate.