Lots of purported uses.

• To treat fatigue- No scientific evidence supports this use.
• To lower high cholesterol - In one small study, a reishi mushroom product increased HDL-cholesterol level in patients with borderline elevations of cholesterol.
• To treat HIV and AIDS - Laboratory studies suggest that reishi mushroom may stimulate certain cells of the immune system, but evidence is lacking on reishi’s ability fight infections.
• To lower high blood pressure - Laboratory studies suggest that reishi mushroom may lower blood pressure. Human studies are lacking.
• To stimulate the immune system - Laboratory studies suggest that reishi mushroom may stimulate some cells of the immune system. A small clinical trial showed that reishi can enhance immune response in advanced-stage cancer patients. More studies are needed.
• To reduce inflammation - Laboratory studies suggest that reishi mushroom may have antihistamine effects. This has not been tested in humans.
• For increased strength and stamina - No scientific evidence supports this use.
• To treat lower urinary tract symptoms (LUTS) - One study suggests that reishi extracts may improve urinary flow in men with slight-to-moderate LUTS. Larger, long-term studies are needed to see if it can improve LUTS in men who have more severe symptoms.