Turkey Tail is one of the most well studied medicinal mushrooms for its benefits for cancer patients and other immunocompromised individuals. Ours is the most potent we could find, wild-harvested, and made from mature fruiting bodies (real mushrooms!). No mycelia or myceliated rice. 30% or more polysaccharide content, 15% minimum mushroom Beta Glucans (none from starch!), and a 15:1 extract ratio.