GNC Super Magnesium 400mg: Aids Adequate Calcium Absorption* GNC Super Magnesium 400mg capsules contain three easily absorbable forms of magnesium—aspartate, lactate and citrate. All are essential to 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* Ensures adequate calcium absorption for healthy teeth and bones* Contains no preservatives, no artificial colors or flavoring These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.