GNC Magnesium 500mg: Helps Build Bones and Maintain Teeth As a dietary supplement, GNC Magnesium 500mg can support heart health. By aiding in calcium absorption, GNC magnesium supplements helps build bones and maintain teeth. Each capsule provides 500mg of magnesium in the form of magnesium oxide, providing over 100%/119% percent of your daily needs. Containing no sugar, sodium, artificial flavors or artificial colors, this supplement provides you with what you need. It's also free of gluten, wheat, corn, soy and dairy so those with allergies or sensitivities can consider this an option. For best results, take one capsule every day. GNC magnesium capsules contain 500mg magnesium oxide This magnesium supplement has no artificial flavors, artificial colors, sugar or sodium Free of  of dairy, soy, corn, wheat and gluten These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.