Reishi Mushroom Benefits are Immense and thus it is usually said to be A Wonder Medicine. You Can use Reishi mushrooms For boosting Your immune system. It Helps in lung conditions including asthma as well as 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 many other conditions. It is also utilized by patients with heart disease along with high blood pressure and higher cholesterol.