Host Defense® Mushrooms™ was founded by renowned mycologist Paul Stamets with
the goal of building a bridge between people and fungi. They specialize in mushroom
mycelium-based supplements and are one of the best-documented and longest-standing
mushroom supplement companies in the USA. All of their mycelium and fruit bodies are
organic, non-GMO, gluten-free, and vegan, and are grown on their farm in Washington
state.