Paul Stamets with an Agarikon fruit body

Mushroom Mycelium Formulas From the Trusted Experts!

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.*

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ꝉ SPINSscan Natural / Natural Products Supermarkets > $2MM / Total US - Natural Channel / Mushrooms Ingredient Report / 52 Wks Ending 12/28/2025

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