Harmonic Arts Reishi Concentrated Mushroom Powder - The benefits of Reishi (Ling-zhi) have been studied in China for over 2000 years. The "Mushroom of Spiritual Potency" is traditionally used to promote longevity and vitality. Source of fungal polysaccharides with immunomodulating properties. Used in herbal medicine to support the immune system, and as an adaptogen to help increase energy and resistance to stress (in case of mental and physical fatigue related to stress).