Made with US Grown, Triple Extracted Mushrooms Dietary Supplement USDA Certified by the Washington State Department of Agriculture From the Forest, to our Farm, to You About the Founder Paul Stamets believes in the power of Mycelium, the network of thread-like cells that produces mushrooms. Paul wants everyone to share in the benefits from the Host Defense line of products. Mentored by the greatest mycologists of our time, he integrates and expands upon the knowledge of our ancestors. Host Defense Shiitake Native to the Far East, Shiitakes are amoung the most widely recognized gourmet mushrooms. They are prized by health practitioners for their unique protein-free polysaccharides, believed to be instrumental in supporting immunity in those that consume them. The Source Full Spectrum of Active Constituents Grown & Processed in the USA Purity Assured Triple Extracted Optimized, Peak Life Cycle Selection P Value Certified for Maximum Growth