What was tested
Researchers randomized 132 patients to Ganopoly or placebo; 123 were assessable at the end. The regimen was 1,800 milligrams three times daily, and outcomes included fatigue, well-being and clinical impression scales. [1]
More active-treatment participants were rated as more than minimally improved. Both groups improved on some measures, so placebo-group change remains relevant when interpreting the result. [1]
How far the result applies
The trial used a defined diagnosis and a specific extract. It does not establish that ordinary reishi powder treats every cause of fatigue or produces the same subjective experience in healthy users. Longer-term outcomes remain uncertain. Funding and conflicts were not established from the retrieved abstract. [1]
A hypothetical reading of the evidence
Imagine two people use products sharing a mushroom name but different preparations. A trial of one does not directly test the other.
| Detail | Interpretation |
|---|---|
| Study result | Limited to its measured outcomes |
| Other preparation | Equivalence not established |
| Broader claim | Needs separate evidence |
Sources for this article
- A randomized, double-blind and placebo-controlled study of a Ganoderma lucidum polysaccharide extract in neurasthenia - PubMed
Source consulted: 2026-09-19. This is a reference resource, not a claim that we conducted the studies or tested a product.