The red reishi mushroom, also known as Ganoderma lucidum and lingzhi, is a mushroom that has been a used in the east for its many health benefits for centuries. The active ingredients in Reishi are polysaccharides, triterpenoids, and peptidoglycans which help contribute to its health benefits. Reishi can help support immune system health by effecting the genes of white blood cells. Finally, Reishi is a powerful antioxidant which can support cardiovascular health healthy cholesterol levels. Double Wood's Reishi Mushroom Extract is Made / Tested in the USA, Non-Gmo, Gluten Free, and Vegan Friendly. It contains 300 capsules and each capsule contains 500mg of 4:1 Reishi extract.