The leaves of common hazel are used in folk medicine for the treatment of circulatory disorders such as varicose veins or thrombophlebitis. Also, with the help of hazel, trophic ulcers of the shins, diseases of the gastrointestinal tract, liver and kidneys are treated. Various preparations based on this tool help to strengthen the immune system and get rid of avitaminosis. They also treat prostatitis, prostate adenoma and hemorrhoids.common hazel is also applicable for some skin diseases, for example, furunculosis, purulent wounds or ulcers. In addition, it helps cure rickets, colds and anemia. It is used in the tanning industry, the wood is used to make curved products. Nuts are widely used in the food industry, as well as as medicinal raw materials. Other parts of this shrub are also used in folk medicine, in particular, the leaves. They have antiseptic and anti-inflammatory properties. With their help, circulatory disorders and skin diseases, as well as some liver and kidney diseases, are treated. Sometimes hazel leaves are used in the treatment of prostatitis. The raw material of this plant contains proteins and carbohydrates, as well asessential oil, glycosides, flavonoids, tannins, organic acids, vitamins of various groups, betulin and some other substances.