Casein & Gluten Free (All Natural and Corn Free) Dietary Supplement USDA Orgen-C Ultra Tested - Tested for More than 950 Contaminants! Heavy Metals Bacteria Yeast Mold Pesticides & More... Kirkman’s new vitamin C is certified as all by the United States Department of Agriculture (USDA). This means that it is free from pesticides or residual chemicals. The vitamin C in this product comes from an all natural gooseberry fruit extract, Phyllanthus emblica. It is corn free, while most synthetic vitamin C is sourced from corn derived ascorbic acid and may not be as well tolerated or as well absorbed as the natural form. It is also free of most common allergens including gluten and casein and is non GMO. Kirkman’s Vitamin C contains an important added benefit in the form of non-citrus bioflavonoids. Vitamin C and bioflavonoids work synergistically to provide antioxidant activity, eye support, immune system support and to support strengthening the walls of blood vessels and capillaries. Many consumers are searching for sources of good nutrition. Kirkman’s Vitamin C provides that opportunity in an easy to swallow plant cellulose capsule. There are several different species of gooseberries depending on the region in which they are grown. All gooseberries have reported health benefits beyond a vitamin C and bioflavonoid source including antioxidant activity.