Windmill Bilberry 5 mg Extract Caplets, With Eyebright and Elderberry. Bilberry, a shrub native to Europe and North America, has been used traditionally for centuries to treat the eyes. Modern research links the anthocyanidins in bilberries to improved night vision and enhanced eye health. These naturally occurring anthocyanidins also support capillary circulation and are potent antioxidants. Each capsule of Bilberry extract contains therapeutic levels of high quality bilberry extract, standardized to contain 25% anthocyanidins, in a base of freeze-dried blueberries. Please Read Item Label and Packaging for Recent Product Information. Take 1 to 4 capsules daily as a dietary supplement or as directed by a healthcare professional. Store in a cool, dry place. Security sealed for your protection. Do not use if seal is missing or damaged. Pregnant or lactating women should consult with their physician prior to taking this product.