Natures Aid 5000mg Bilberry is native to Northern Europe, Asia and North America (where it is known as Blueberry). It is a perennial shrub growing to about 16 inches in height and bearing purple black berries. Bilberries have been eaten as fruit since prehistoric times and they have been used for generations to make jam. Bilberry is beneficial for eye strain, near sight, night blindness, poor circulation, bruising, diarrhoea and other intestinal disorders.