» Magnesium Citrate Oral Solution is a sterilized or pasteurized solution containing, in each 100 mL, not less than 7.59 g of anhydrous citric acid (C6H8O7) and an amount of magnesium citrate equivalent to not less than 1.55 g and not more than 1.9 g of magnesium oxide (MgO).

Magnesium Citrate Oral Solution may be prepared as follows:

Dissolve the anhydrous Citric Acid in 150 mL of hot Purified Water in a suitable dish, slowly add the Magnesium Carbonate, previously mixed with 100 mL of Purified Water, and stir until it is dissolved. Then add the Syrup, heat the mixed liquids to the boiling point, immediately add the Lemon Oil, previously triturated with the Talc, and filter the mixture, while hot, into a strong bottle (previously rinsed with boiling Purified Water) of suitable capacity. Add boiled Purified Water to make the product measure 350 mL. Use Purified Cotton as a stopper for the bottle, allow to cool, add the Potassium Bicarbonate, and immediately insert the stopper in the bottle securely. Finally, shake the solution occasionally until the Potassium Bicarbonate is dissolved, cap the bottle, and sterilize or pasteurize the solution.