Host Defense Mushrooms

Host Defense is more than a product line: they are on a myco-mission to spread the power of mushrooms supporting healthy lifestyles.

Grown in the USA

• Near the Olympic Rainforest, USA
• Highest quality lab & growing environments
• Highest quality manufacturing methods
• No co-mingling or adulteration
• Purity testing batch to batch

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 longestcertified organic mushroom company in the U.S.

Peak Performance

Each mushroom species has a narrow window when active constituents are at their highest volume. With over 40 years of experience and knowledge, Paul knows the precise harvest time for each species for maximum activity and efficacy. 

At their optimal rate of growth, the mushroom-forming mycelium are flash-frozen, capturing a full spectrum of constituents at peak performance.

Recommended by Experts

Host Defense^® products are chosen by physicians, naturopaths and other practitioners for efficacy with their patients.

“Host Defense^®, owned by mycologist and author Paul Stamets, is the best all around source for immunesupporting mushroom products and information.*” - Andrew Weil, M.D.