Properties of the Maitake Mushroom. Powerful natural medicine Author: Mapachito Benefits of the Maitake fungus for physical and mental wear, plus all its diverse medicinal properties. The maitake mushroom is a highly appreciated Japanese fungus that shares very interesting medicinal properties with shiitake and reishi mushrooms. Medicinal properties of the maitake mushroom Some of the medicinal properties of the maitake mushroom have been known since ancient times. It was part of the diet of Chinese warrior monks around the fifteenth century for its ability to increase vital energy. Actually, what happens is that the maitake fungus is an adaptogen, that is, it helps the organism to cope with periods of great physical and / or mental exhaustion.