Bilberry (Vaccinum myrtillus), is a plant of Polish coniferous forests containing medicinal raw materials: bilberry leaves (Folium Vaccinum myrtillusae) and bilberry fruit (Fructus Vaccinum myrttillusae). Fruits contain considerable amounts of catechine tannins, and anthocyanins, organic acids, carotenoids, pectin and vitamins (A, B2 and C, P), minerals (phosphorus, magnesium, potassium, calcium and iron), have significant nutritional value, and a significant effect on the regulation of the digestive process. Preparations from the leaves of bilberry are diuretic and disinfectant for the urinary tract, stimulate digestion and metabolism, they contain flavonoids, tannins, organic acids, minerals (e.g. manganese), triterpenes. They are used as insulin-mimetics. In addition, fruits have a disinfecting effect, antihemorrhagical, prevent the growth of worms. Carotenoids enhance vision, especially during the night and have anti-toxic potential, binding toxins in the gastrointestinal tract and excreting out of the body.