Learn

Reishi

Ganoderma lucidum

Reishi is the hard, lacquered shelf mushroom that grows off hardwood and looks more like a piece of furniture than food. It has been used in traditional wellness practices for centuries, and almost never as a vegetable.

Updated September 2026

What Reishi is

Reishi fruits as a kidney-shaped shelf with a glossy red-brown top, and it grows woody as it matures. It is one of the oldest documented mushrooms in traditional use, with a written record going back many centuries in China and Japan.

It is also genuinely bitter. That bitterness comes from the same triterpene compounds the species is known for, so it is a feature of the material rather than a flaw in the batch.

Why it is a powder and never a side dish

A mature Reishi is too tough to chew. Traditional preparation simmers slices into a tea for hours, and the modern equivalent is a fine powder that can be stirred into a hot liquid. Grinding the dried fruiting body is what makes the material usable at all.

That is worth knowing when comparing products. With a species nobody eats whole, the container is the only form it comes in, so what is actually inside the container carries all the weight.

The compounds

Reishi is the triterpene species in our line. Ganoderic acids are the best known of them and are concentrated in the fruiting body. Alongside those it carries beta-glucans and other polysaccharides, the same family that runs through every mushroom in the daily powders, plus antioxidant compounds.

How the powder is used

A tablespoon a day is the serving for every daily powder, stirred into hot water, coffee, or broth. The flavor is assertive and bitter, so it sits better in something savory or strongly flavored than in a smoothie. Reishi comes in a 3/4 oz size where the other daily powders come in 1 oz.

How much Reishi powder per day

Reishi is bitter, so most people take it as a teaspoon to a tablespoon in hot water, coffee, or broth rather than in anything sweet. The 3/4 oz size holds fewer tablespoons than the 1 oz powders, which the last row shows.

One level teaspoonabout 0.9 g
One level tablespoon (the label serving)about 2.8 g
A 3/4 oz containerabout 7 servings at a tablespoon a day

Every row is the arithmetic of our label's serving. None of it is a recommendation for you; ask your own clinician about what is right for you.

Compounds it is known for

  • Triterpenes
  • Ganoderic acids
  • Beta-glucans
  • Polysaccharides
  • Antioxidants

What people take it for

  • Supports relaxation and restful sleep
  • Supports the immune system
  • Adaptogenic support for everyday stress

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.