The major mineral magnesium is involved in many functions: Its involved in nerve, skeletal muscle, heart and cell function* Helps build bones and helps maintain teeth* Is necessary for protein synthesis* Is important for DNA and RNA synthesis*Each tablet supplies 250 mg of Magnesium.Kosher and Vegetarian.All GNC mineral amounts are shown elemental. Brand: GNCCategory: calcium-vitamin-d Brand: GNCCategory: MEN''S HELTH