Magnesium citrate is used as a saline laxative to cleanse the bowel prior to surgery or certain medical procedures. Magnesium citrate powder is also used in the food and beverage industries to regulate acidity in soft drinks and act as a preservative, and in supplements as a mineral salt.
INDUSTRIAL USE: Magnesium citrate powder, known as E number E345, is used in the food and beverage industries as a preservative and acid regulator and in the cosmetic industry as a preservative. It is also used to fortify milk content in dairy and soy milk, and in fertilizers.