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Dietary SupplementFor Immune SupportNon GMO ValidatedSuitable for Vegans and VegetariansSource Naturals Non-GMO Vitamin C provides all of vitamin C's health benefits including support for the immune system collagen formation hormone production and iron utilization. While much of the vitamin C on the market is derived from genetically modified ingredients Source Naturals carefully scrutinizes its sources of vitamin C to ensure it is obtained from only non-genetically modified materials.