Biologically active food additive "OCHAGOR" is a source of organic acids, amino acids, polysaccharides, chromogenic complex, presented in the beverage complex. They have a beneficial effect on the central nervous system and metabolic processes, and also increase the body's immunity to infections. The drink is obtained by fermenting a mixture of a sugar-containing substance, a culture liquid of kombucha and an infusion of chaga. In the composition of the BUD - water, kombucha concentrate (kombucha), chaga (birch mushroom), stevia extract. The main effect of the application is to normalize the activity of the enzyme systems of the body. Increases resistance to diseases, relieves fatigue, increases vitality. There are studies proving the antiviral, anti-inflammatory effect of chaga, as well as proving its effectiveness in cancer treatment, reducing the side effects of chemotherapy and other aggressive drugs. It has antioxidant properties, slows down aging.