Natural Factors Magnesium Bisglycinate Pure - Magnesium is an essential nutrient needed as an enzyme cofactor in more than 300 metabolic reactions to help support healthy bones, teeth, muscles, and nerves. We also need magnesium to metabolize nutrients and to produce the body’s main form of energy, adenosine triphosphate (ATP). Diets high in processed foods often lack magnesium, but depletion is possible even on a healthy diet. This is caused by decreased levels of magnesium in soil, excess dietary calcium, and medications affecting absorption and elimination of magnesium. In addition, low stomach acid compromises the absorption of common forms of magnesium. Fortunately, magnesium bisglycinate does not require stomach acid for absorption, is easy on the stomach, and does not cause diarrhea. Magnesium Bisglycinate from Natural Factors is a one serving per day, non-GMO magnesium powder suitable for vegetarians and vegans.