Chaga mushroom is a non toxic mushroom with extremely high amount of antioxidants. This mushroom differs from other mushrooms as it grows by extracting nutrient from living trees instead of the dead ones. Chaga mushrooms primarily grow on birch trees and are only found in the coldest locations of the northern hemisphere. This unique factor makes Chaga mushrooms exclusive to Russia, Eastern Europe, Canada, Korea, and some parts in the United States. In addition to this exclusivity, chaga mushrooms take at least 5 years to mature, and are very rare. Also, chaga mushrooms cannot be cultivated. Several attempts have been made to cultivate Chaga mushrooms, but every attempt resulted in significantly reduced and different bioactive constituents.