Nature's Herbs Premium Reishi Mushroom (Ganoderma Lucidum) is derived from the highest quality Reishi Mushrooms obtainable. Reishi Mushrooms have been used in China for at least 2000 years and is known as Ling-Zhi. It is also known as Red Reishi. Our premium Reishi Mushrooms are grown on an organically grown soybean base and produced under strictly-controlled, hygienic conditions. There are absolutely no chemicals, pesticides, artificial colors, flavors or foreign substances used at any time in the growing cycle or during processing.