Swanson Wild Blueberry is standardized to provide 1.5% anthocyanins, which are free-radical-fighting antioxidants. The brightly colored pigments in fruit are not only beautiful and inviting, but they provide excellent antioxidant protection for the body, too. In fact, the more a fruit stains your clothes, the more it protects your tissues. Win the fight against free radicals with protection from blueberries.