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Immune Support250 mg Per CapsuleEsterified Vitamin CVitamin SupplementTotal wellness for mind body & homeUnsurpassed purity & potency Science-Backed Quality Since 1969If you think all vitamin C is the same think again! Unlike conventional water-soluble vitamin C Swanson Ascorbyl Palmitate is fat-soluble which allows it to be incorporated directly into the lipid molecules of cell membranes for optimum cellular level protection against free radicals.