20:1 Extract -The Most Potent On The Australian MarketRELAX | DETOXIFY | ADAPT"MUSHROOM OF IMMORTALITY" Reishi has been used and recognized as a medicinal mushroom for over 2000 years. It is often referred to as Ling Zhi, or "Mushroom of Spiritual Potency". You'll commonly hear Herbalists talk about Reishi's benefits, including its adaptogenic properties, and the support it often offers for overall wellness, healthy sleep, and immunity.