Reishi Mushroom Advantages are Immense and thus it can be said to be A Wonder Medicine. You Can use Reishi mushrooms To further improve Your immune system. It Helps in lung conditions including asthma and bronchitis. It Also helps fight viral infections like swine flu, avian flu and other such Flu, kidney disease, cancer, liver disease, HIV, chronic fatigue syndrome (CFS), Stress, insomnia, ulcers and several other conditions. It is also used by patients with heart disease and also high blood pressure and high cholesterol.