Conclusion: Ex vivo studies conducted in human blood cells show the radioprotective effect of β-glucan of aqueous extract of G. lucidum, nevertheless, its implementation as radioprotector to humans is in need of further clinical research studies.
PubMed 32325828 ↗Reishi Mushroom Extract
People mainly take Reishi Mushroom Extract for sleep, focus, anxiety. Based on 4 first-hand reports and 5 meta-analyses & systematic reviews in the medical literature. Ranked #799 of 1,974 overall.
Of reports that state an outcome, 100% are positive.
What Reishi Mushroom Extract does, according to users
Of the people who reported each effect, the share who said it got better.
What the research says
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
At least one meta-analysis, or 5+ randomized controlled trials. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: Our review did not find sufficient evidence to justify the use of G. lucidum as a first-line treatment for cancer. It remains uncertain whether G. lucidum helps prolong long-term cancer survival. However, G. lucidum could be administered as an alternative adjunct to conventional treatment in consideration of its potential of enhancing tumour response and stimulating host immunity. G. lucidum was generally well tolerated by most participants with only a scattered number of minor adverse events. No major toxicity was observed across the studies. Although there were few reports of harmful effect
PubMed 27045603 ↗Conclusion: mTOR is one of the targets by DCM and can be inhibited by the antioxidative properties of G. lucidum directly via scavenging radicals and indirectly via modulating mTOR signal pathways such as Wnt signaling pathway, Erk1/2 signaling, and NF-κB pathways.
PubMed 32775437 ↗Conclusion: Evidence from a small number of randomised controlled trials does not support the use of G lucidum for treatment of cardiovascular risk factors in people with type 2 diabetes mellitus. Future research into the efficacy of G lucidum should be placebo-controlled and adhere to clinical trial reporting standards.
PubMed 25686270 ↗Dosage people report
As stated by users — not a recommendation. Follow the label or your doctor.
Reported side effects
How often each side effect came up across all reports.
What users say
Verbatim quotes, shortened only — each links to the original discussion.
“3 X 500MG Red Reishi Extract (Various extracts)”
“i drink my coffee black with a teaspoon of reishi mushroom extract and it is outstanding.”
“Reishi mushroom extract has been clinically studied and shown to decrease time to fall asleep and increase the amount of time spent in deep anabolic sleep”
“Reishi mushroom extract and cod liver oil daily have saved me”
Top discussions (4)
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Other options for sleep
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate