Calcium citrate is produced by neutralizing citric acid with calcium carbonate or calcium hydroxide, followed by crystallization and drying. It is a white, odorless, crystalline powder that offers superior calcium bioavailability compared to many other calcium salts, as it can be absorbed effectively regardless of stomach acid levels.
Calcium citrate contains approximately 21% elemental calcium and dissolves moderately well in water, with solubility increasing at lower pH values. The ingredient serves dual functions as both a calcium source for nutritional fortification and as an acidity regulator to control pH in food systems. It is widely used across the food, beverage, and dietary supplement industries for its favorable safety profile and functional versatility.