What it is: It is a fungus that grows on the birch tree and on other hardwood trees that thrives in cold climate. It is of irregular shape and black-brown color, due to its high antioxidant contentHow it works: It contains antioxidants, and it seems to be able to contribute to boosting the immune system. At the same time, it has anti-cancer, antioxidant and antiviral properties. In Siberia, it is called “Gift of the Gods” or the “Mushroom of Immortality” and has been used for therapeutic purposes for thousands of years.In which products you can find it: