Magnesium lactate is a food supplement that contains magnesium, an important element in various enzymatic reactions of the body. Magnesium acts as a cofactor in the synthesis of proteins and in the metabolism of carbohydrates. About 8.33 g of Magnesium Lactate (anhydrous) contains 1 gram of magnesium and a gram of Magnesium Lactate (anhydrous) contains around 4.9 mmol of magnesium.