Bilberry is a plant that produces berries similar to the American blueberry. Medicine is made from dried fruit and leaves.

Bilberry contains chemicals called tannins. They minimise edoema. Chemicals in bilberry leaves may lower blood sugar, cholesterol, and improve diabetes circulation.

People use bilberry for night vision, poor circulation that can cause the legs to swell, high blood pressure, and many other conditions. No scientific evidence supports these uses.