What is Bilberry? Bilberries are found in Europe & are a relative of the cranberry & blueberry. Bilberries may be eaten fresh or dried & Bilberry tea may also be made from fresh or dried berries, or from the leaves. However, the extract contains the highest amount of antioxidants making it the most effective form of bilberry. Natures Aid contains 12.5mg anthocyanosides per tablet. What Does Bilberry Do? Bilberries contain flavonoids, which possess antioxidant properties & may help protect cells in the body against free radical damage. Free radicals are created as an unwanted by-product of metabolism, as well as by chemicals, pollution, smoking & stress amongst other things. Tissues that make up the eye are vulnerable to damage by free radicals. Bilberry may help to maintain the health of eyes & vision.