We deliver this Elderberry supplement with an industry high 64:1 concentrate. The highest extract on the market, equivalent to 32,000 mg of Black Elderberries and delivering 500 mg of Elderberry per serving. Our formula is made from premium Cultivar Organic Elderberries, to provide high quality immune support. We strive to give you nothing but the best, so you can optimize your health from within, with superior products guiding you.