Reishi

It has been used in Japan and China for over 2,000 years and thus making it the oldest mushroom known to have been used as medicine. Since ancient times, the Reishi mushroom was reserved for emperors and royalties. It has been revered as nature’s rarest and most beneficial herb. In the Superior category of Shen Nung Ben Cao Jing, the oldest and most famous medical text on Oriental herbal medicine, red Reishi is ranked as the number one herb, ahead of ginseng.