Functional mushrooms such as lion's mane, reishi, cordyceps, chaga and turkey tail have been used for centuries to support focus, immune function and overall wellness. Shop mushroom supplements in capsules, powders and liquids. Brands include Host Defense, Om Mushroom, Real Mushrooms and Herb Pharm. Compare forms, strengths and sizes, then add to cart. Shop with confidence: authentic supplements from an authorized retailer since 2010.