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Advanced Nutrition by ZahlerAdvanced Vitamin C Formula1000+ mg Per ServingDietary SupplementFeel Better Everyday™Kosher ParveThis Product was Manufactured in a GMP Registered FacilityNon-GMOGluten FreeDairy FreeSoy FreeVegetarian FriendlyAdvance Vitamin CVitamin C is an essential antioxidant that helps support the immune system. Since Vitamin C is water soluble and the body cannot store it a continuous supply is needed.