Calcium magnesium citrate, molecular formula C12H10Ca2MgO14 · 5H2O, theoretical calcium content (dry basis) 16.5%, magnesium content (dry basis) 5.0%, white particles or powder, mild taste without odor. Calcium and magnesium citrate are slightly soluble in water. As organic salts, calcium and magnesium citrate have high bioavailability and can be used in health foods as supplements.