Kalciummal

Kalciummal, known in English as calcium malate, is a calcium salt of malic acid. Its chemical formula is Ca(C4H4O5)2, and it can exist as an anhydrous salt or as hydrated forms such as the dihydrate. It is used primarily as a dietary calcium source in supplements and in fortified foods.

Preparation and properties: Calcium malate is produced by neutralizing malic acid with calcium compounds, such as calcium carbonate or calcium hydroxide. It is a white to off-white crystalline solid that dissolves in water and is relatively stable under ordinary storage conditions. Solubility and absorption are influenced by pH, making it compatible with many oral formulations.

Uses and bioavailability: In nutrition, calcium malate provides calcium for bone and dental health, and is marketed as a calcium supplement. Some evidence suggests higher bioavailability than calcium carbonate, while other studies show comparable absorption; vitamin D status and concurrent meals can affect uptake. It is less dependent on stomach acid than some calcium salts, which can be advantageous for people with reduced gastric acidity.

Safety and regulation: Calcium malate is generally regarded as safe when used within recommended dietary allowances. Excessive intake can lead to hypercalcemia, kidney stones, and interference with the absorption of other minerals and certain medications, including antibiotics and iron. People with kidney disease or other conditions should consult a healthcare professional before use.