The entire mushroom (mycelium and fruiting body) is used to fortify the immune system. The polysaccharides found in the mycelium and from fermentation liquid each have significant anti-carcinogenic activity. This whole polysaccharide fraction is used as a drug against malignant tumors in Japan. Coriolus has been found to be an interferon-inducing substance. In China, Coriolus is used for viral infections of the liver, including hepatitis B and chronic hepatitis, and it is used as a preventive and curative drug for liver cancer. However, it is so safe that it is also sold over the counter as an immune system strengthening tonic in herb stores.