Nature's Most Potent Source of Vitamin C USDA Organic No Preservatives -+ Additives Non GMO Product Gluten Free Celebrating 20 Years of Purity Amla-C Plus is Certified 100% Organic by Quality Assurance Intl. The Amla berry, or Indian gooseberry, provides the highest concentration of vitamin C of any natural source. This whole food vitamin C is twelve times more assimilable than synthetic vitamin C. May support healthy immune function. Contains high levels of antioxidants. Contains tannins, which may help protect the body against oxidative stress.