Welcome to Host Defense Mushrooms! Founded by Paul Stamets, our mushroom mycelium and fruit bodies grown on our certified organic farm in Washington State are non-GMO, vegan, and gluten-free. We base our formulations on scientifically proven data to ensure quality and safety, which is why we are the best selling mushroom supplement brand in the U.S.ꝉ

A product of Fungi Perfecti, LLC. Building Better Health Since 1980.*

Paul Stamets founded Host Defense Mushrooms with the goal of building a bridge between people and fungi.

Based near the Olympic Rainforest in Washington state, we are one of the best-documented and longest-standing mushroom supplement companies in the USA. Our continued mission is to explore, study, preserve, and spread knowledge about the use of fungi for helping bees, trees, people, and planet.

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