Reishi Mushroom

Ganoderma lucidum

The ancient 'mushroom of immortality' — a bitter, woody fungus prized for immune resilience, liver protection, and a deep, centered calm.

At a glance

Intensely bitter, woody, and slightly resinous. The hot decoction is dark amber with a complex bitterness that lingers. A softening agent (licorice, date) is traditional.

Immune resilience during cold and flu season
Integrative support alongside conventional cancer care (with oncologist)
Liver-protective decoction
Stress-calming evening tonic

Modern research

Tradition

Reishi is one of the most storied herbs in East Asian medicine. First recorded in the Shennong Bencao Jing (~100 CE) as a 'superior herb' — a classification reserved for tonics with no toxicity and long-term benefit — it appears in Chinese, Japanese, and Korean medical texts consistently for 2,000 years as a Qi tonic, heart-calming herb, and symbol of longevity.

Modern evidence

Beta-glucan polysaccharides and triterpenoids (ganoderic acids) are the primary active groups. A Cochrane review found that reishi, used alongside conventional therapy, improved quality-of-life markers in cancer patients. Immune-stimulating effects on NK cell activity are the most replicated finding in healthy volunteers.

How to prepare

Raw dried reishi must be decocted (simmered) for 30–45 minutes to release beta-glucans. Triterpenoids require alcohol extraction. A quality dual extract captures both. Whole-powdered reishi capsules (not dual-extracted) deliver beta-glucans but not the full triterpenoid profile.