Red reishi mushroom is known for being a powerful immune system booster and one of nature's most healing mushrooms. We meticulously source and lab-test our mushrooms, ensuring that they are free of toxins or fillers. Our reishi mushroom powder is milled from the water-extracted fruiting mushroom body (not the myceliem) and is grown on hardwood logs. Our reishi extract contains a minimum of 20% polysaccharides.