"Source Naturals' Magnesium Malate is a fully reacted compound of magnesium and malic acid. Malic acid is a natural fruit acid, present in every cell in the body. It is part of the energy-generating Krebs cycle and is also an excellent chelator of Aluminum. However, malic acid in its free form may actually promote undesirable absorption of aluminum from the gut. Magnesium malate has the ability to exchange its Magnesium for Aluminum. This beneficial action may gradually reduce the body's burden of excess aluminum. Suitable for vegetarians and hypoallergenic."