Magnesium is involved in over 300 enzymatic processes, including the production of ATP. Magnesium helps maintain bone density, normal cardiac rhythmicity, pulmonary function, and aids in blood glucose regulation. Thorne Research provides magnesium as aspartate, citrate, and citrate-malate chelates. Dosage:1 to 3 capsules tid Each Capsule Contains DV% Magnesium (as Magnesium Aspartate) 90 mg 22.5% Daily Value (DV) M213/ 90 A woman who is pregnant or nursing, or who might become pregnant, should consult a health-care practitioner before using this product.