GNC Super Magnesium 400 mg capsules contain three easily absorbable forms of magnesium—aspartate, lactate, and citrate. These forms are essential for maintaining healthy teeth and bones and are easily absorbable in this GNC magnesium supplement. Low magnesium levels are linked to several health issues, so ensuring you get enough through your diet or with a dietary supplement is crucial. Magnesium is involved in nerve, skeletal, muscle, heart, and cell function. It ensures adequate calcium absorption for healthy teeth and bones and contains no preservatives, artificial colors, or flavoring.