Gaia Herbs Reishi Mushroom is an adaptogenic tonic designed to support your immune health, promote heart health, and help your body cope with stress. Made with 100% mushroom extract—no fillers, starch, grains, or mycelium. Vegan, gluten-free, and proudly made in NC, USA. Since 1987, Gaia Herbs has connected people, plants, and planet to support longevity.