Reishi mushroom has been used to help enhance the immune system, reduce stress, improve sleep, and lessen fatigue. People also take reishi mushroom for health conditions such as:
High blood pressure
High cholesterol
Cardiovascular disease
Liver or kidney disease
Respiratory diseases (such as asthma)
Viral infections (such as the flu)
HIV/AIDS
Cancer and support during chemotherapy
Pain during and after a shingles outbreak
Building strength and stamina
Fatigue