Host Defense

At Host Defense®, all of our product development and formulation is based on scientifically validated data to ensure the quality and efficacy of our supplements. Our mushroom mycelium and fruit bodies are grown on our farm in Washington state and are certified organic, non-GMO, vegan, and gluten-free. And all of our supplements are verified for identity, purity, composition, and strength by independent labs that use internationally recognized, validated testing methods.

One of the most significant outcomes of our research has been discovering the value of using mushroom mycelium. Mycelium is the longest living part of the mushroom organism and consists of highly active cells that serve many important functions - including acting as the immune response of the fungal organism. Years of industry-based research, along with both internal and third-party testing, demonstrates that mycelium-based mushroom supplements offer significant immunological support. That’s why we use mushroom mycelium in ALL of our supplements – because it works!*