ICONFIT Chaga is a mushroom that grows on the trunk of a birch tree . From the forests of Estonia! Chaga has antioxidant properties and is an excellent immune system booster. Naturally, it grows mainly in the forests of Eastern Europe and Russia, but is also found in North America, and forms a black fungus on the trunk of the tree. Chaga contains a wide range of B vitamins, flavonoids, phenols, minerals and enzymes . Vitamins B1 and B2 contribute to the normal functioning of the nervous system. Vitamin B2 contributes to the maintenance of normal skin. It is also one of the richest sources of pantothenic acid in the world. Pantothenic acid (vitamin B5) contributes to the reduction of tiredness and fatigue. Birch sponge promotes the elimination of toxic substances from the body.