Magnesium Malate from Swanson Premium is a unique form of supplemental magnesium formed by the union of magnesium with malic acid. These two nutrients are amazingly synergistic. While magnesium is involved in more than 300 enzymatic reactions throughout the body, malic acid is present in nearly every cell, where it's integral to the production of cellular energy. Both independently and together, these nutrients have shown positive benefits for neuromuscular health, physical comfort and more.