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Advanced Nutrition by Zahler®Advanced Magnesium SupplementGeneral HealthDietary SupplementKosher ParveNon-GMOGluten FreeDairy FreeSoy FreeVegetarian FriendlyAdvanced Magnesium Supplement Magnesium is a naturally occurring mineral that helps maintain many functions in the body notably supporting the muscles and nerves. Magnesium may also increase water in the intestines thereby helping with occasional constipation. Built Clean: Free of synthetic binders and fillers.