Support immune health, heart health, and daily energy with Host Defense Reishi Capsules. Made with Reishi, the Mushroom of Immortality, to promote overall wellness and vitality. About Host Defense: Host Defense Mushrooms was founded by renowned mycologist Paul Stamets; our mushroom mycelium is certified organic, non-GMO, gluten-free, and grown in the USA. Powered by Mushroom Mycelium: Our organic mushroom mycelium is grown on organic brown rice substrate; third-party studies show that mushroom mycelium and fermented rice substrate support your health. Herbal Immune Support Supplement: As a stamina support supplement, take 2 mushroom capsules once daily with food or on an empty stomach, or as recommended by your healthcare advisor.