Magnesium malate is formed when an ion of magnesium is attached to a molecule of malic acid (an organic compound found in fruits and vegetables, especially apples).
And, here's 5 surprising benefits to using magnesium malate:
It's important to be sure you are choosing a good form of magnesium, like magnesium malate. Other cheaper forms such as magnesium oxide are poorly absorbed in the body.
Source: "Exploring The Benefits of Malic Acid." The Healthier Life Exploring The Benefits of Malic Acid Comments. Agora Health Ltd, 3 Dec. 2001. Web. 24 Oct. 2014.