Bilberry Extract is also commonly used to treat heart conditions such as reducing the risk of atherosclerosis (the hardening of the arteries) chest pain & decreased blood flow in the veins. Bilberry Extract is also commonly used to maintain healthy vision due to its ability to strengthen capillaries. Bilberry has also been shown to relieve varicose veins & haemorrhoids especially in pregnant women. Bilberry Extract originates from the Bilberry plant the dried ripe fruit & leaves are then used to make medicines & supplements.