Immune & Energy Support Supplement: This herbal mushroom supplement supports immune health, heart health, and daily energy and stamina* Reishi Mushroom Vitality Supplement: Our herbal supplement is made with Reishi, "The Mushroom of Immortality," to support 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*