Blueberry (Vaccinium myrtillus) - also known as bilberry. The raw production material are the fruits of berries (bilberry - Fructus Myrtylli) and leaves (Folium Myrtylli). Its fruits are a rich source of vitamins: ascorbic acid (vit. C), B vitamins, provitamin D, PP; micronutrients (zinc, phosphorus, magnesium, copper, calcium and iron). They contain from 7 - 15% catechine tannin, myrtillin, organic acids (citric and malic). The leaves contain: anthocyanins, sugars, flavonoids and multi-phenolic acids, essential oil, minerals and trace elements. The most important ingredient of leaves is glucokinin, lowering blood sugar and inositol, supporting the reduction of adipose tissue and influencing the removal of disorders in the digestive system (antidiarrheal). Berries are a powerful antioxidant that supports the immune system. Leaves are used in the extracts improving the functioning of the circulatory system. It is a supplement for strengthening, detoxification and vitaminizing.