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- Reishi
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 | Reishi (Ganoderma lucidum) |
Common names: Ling chih, ling zhi
Parts used and where grown: Reishi mushrooms grow wild on decaying logs and tree stumps in the coastal provinces of China. The fruiting body of the mushroom is employed medicinally. Reishi occurs in six different colors, but the red variety is most commonly used and commercially cultivated in North America, China, Taiwan, Japan, and Korea.1
Historical or traditional use: Reishi has been used in traditional Chinese medicine for more than 4,000 years.2 The Chinese name Ling zhi translates as the “herb of spiritual potency” and was highly prized as an elixir of immortality.3 Its traditional Chinese medicine indications include treatment of general fatigue and weakness, asthma, insomnia, and cough.4 |
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Active constituents: Reishi contains several constituents, including sterols, coumarin, mannitol, polysaccharides, and triterpenoids called ganoderic acids. Ganoderic acids seem to help lower blood pressure as well as decrease low density lipoprotein (LDL) and triglyceride levels. These specific triterpenoids also help to reduce blood platelets from sticking together—an important factor in lowering the risk for coronary artery disease. While human research demonstrates some efficacy for the herb in treating altitude sickness and chronic hepatitis B, these uses still need to be confirmed.5
How much should I take? Many people take reishi as 1.5-9 grams of the crude dried mushroom per day, 1-1.5 grams per day in powder form, 1 ml per day of tincture, or as a tea. Are there any side effects or interactions? Side effects from reishi can include dizziness, dry mouth and throat, nose bleeds, and abdominal upset; these rare effects may develop with continuous use over three to six months. As it may increase bleeding time, reishi is not recommended for those taking anti-coagulant (e.g., blood-thinning) medications. Pregnant or lactating women should consult a physician before taking reishi. |
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