Fungi Perfecti - Host Defense Organic Stamets 7 Extract - 1 oz. (30 mL) Fungi Perfecti Host Defense Stamets 7 Extract is a special blend of seven mushroom species to support general immunity. Fungi Perfecti Host Defense Stamets 7 Extract is used by many as a general tonic for maintaing perk performance and health. Why Host Defense MushroomsGrown in the USA Located near the Olympic Rainforest, USA Highest quality lab, growing environments and manufacturing methods No co-mingling and adulteration Purity testing batch to batch Non-GMO Maintain Chain of CustodyPaul Stamets adn his skilled Host Defense team grow every single mushroom in every product. From the Forest, to Their Farm, to You. There is no other mushroom supplement company that has such complete control over their raw materials. Sustainably CultivatedWhen sourcing mushrooms from the pristine Olympic rainforest, their team leaves the habitat and original mushroom intact and undisturbed. Only a small sample is required and taken for growing in their laboratories at the farm. Host Defense methods protect the native habitat. Their vast culture library of rare and endangered mushroom species has been called a national treasure. Certified Organic Host Defense is a Certified Organic food producer and processor. Our organic certificates are always available upon request. We are the best-documented and longest-certified organic mushroom company in the U.S.Preserved Genetic Integrity Host Defense mushrooms are genetic matches to species found in the wild. They are able to ensure this integrity by following a method developed by Paul called Certified P Value. P Value is a scientific system of measuring the generational age of each species to preserve genetic strength, and is key to providing fungal strains with the greatest efficacy and vitality. The higher P Value gets, strains degenerate and die out.