Why Magnesium Oxide High Potency? Magnesium is an element (mineral) the body needs for the normal functioning of the heart, nerves, cells, muscles, and bones.  In fact, magnesium is essential for more than 300 biochemical reactions in the body.  Bronson’s Magnesium 400 mg is designed to promote bone formation, carbohydrate metabolism, proper nerve muscle impulses, and energy production.* Bronson’s Magnesium is a vegetarian supplement that provides 400 mg. of this essential mineral in each easy-to-swallow vegetarian capsule and is designed to promote bone formation, carbohydrate metabolism, proper nerve muscle impulses, and energy production.*  Bronson’s Magnesium 400 mg. is provided as magnesium oxide, which some individuals find beneficial in helping to relieve heartburn or indigestion. About Bronson Since 1960, Bronson has been providing families with the highest quality products and finest customer service available. This 60-year heritage speaks for itself. But with so many online vitamin stores, why should you purchase supplements from Bronson?  In short, our company is time proven, offering the purest, high quality vitamins backed by science. Trust Bronson to provide the very best natural health products for you and your family.