The Reishi mushroom is a large, dark mushroom with a glossy exterior and a woody texture. It is a fungus that grows on hardwood (especially oaks) in warmer regions, such as Asia, the south Pacific, southern Europe and the South-eastern United States.
Reishi (Ganoderma lucidum) has been called the mushroom of immortality. Reishi contains triterpene which are mood boosting compounds which help balance the immune system, digestive issues, skin issues, sleep disorders, mood issues and hormones.
It is among several medicinal mushrooms that have been used for hundreds of years, mainly in Asian countries, for treatment of infections. More recently, they have also been used in the treatment of pulmonary diseases and cancer.