Reishi/Shiitake Blend NOW Rei-Shi Mushrooms is a blend of reishi (also known as Ling Zhi) and shiitake mushrooms. Reishi and shiitake are both well known in Chinese herbalism and have been used to promote health and wellness for centuries.* In more recent years, researchers have identified key bioactive polysaccharides that may contribute to the health supporting properties of these two super mushrooms.* Natural color variation may occur in this product. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Results may vary. Consult your healthcare provider before starting any supplement regimen.