“Reishi mushroom?”Here!Ganoderma lucidum
Hasn’t appeared in a scanned product yet.
As a supplement
Talk to your doctor or pharmacist.
Roll Call does not check drug interactions or assess personal safety.
Reishi is a mushroom used for centuries in East Asian traditional practices. Supplements typically use dried mushroom powder or extracts of the fruiting body or spores.
Why it’s used
Taken to support immune function and general wellness.
What the evidence says
Human clinical evidence for reishi remains limited. Some small trials suggest effects on immune cell activity, but studies are often small, short, and inconsistent in preparation and dosing, and no clear clinical benefit has been well established in humans.
Context
Studied preparations and doses vary widely across trials, from mushroom powders to purified extracts, making direct comparison and dose standardization difficult.
Rumors
Reishi mushroom supplements can harm the liver.
Supports — suggestivehealth and safety evidence
Measured as an outcome.
- Ganoderma lingzhi (Reishi Mushroom)-Induced Acute Liver Injury in the Setting of Alcohol Use: A Case Report and Review of the Literature (Peer-reviewed) · Funding not checked · No conflicts declared
- Evaluation of Immune Modulation by β-1,3; 1,6 D-Glucan Derived from Ganoderma lucidum in Healthy Adult Volunteers, A Randomized Controlled Trial (Peer-reviewed) · Funded by SBG Biomedical Research (Los Angeles, CA, USA) (industry)
Who’s saying this
- Ubie — a brand: AI symptom checker; sells targeted healthcare advertising to pharma advertisers
How we know who this is
- “Ubie is Japan's top healthcare startup.” (their page)
- “Ubie launches a self-serve platform that lets healthcare and pharma advertisers reach patients with targeted, clinically contextual placements inside Ubie's AI-driven patient experiences.” (their page)
Reishi mushroom reduces stress and anxiety.
Not gradedhealth and safety evidence
Sources cited — no verdict reached.
What was measured is not yet noted.
- A randomized, double-blind and placebo-controlled study of a Ganoderma lucidum polysaccharide extract in neurasthenia (Peer-reviewed) · Funding not checked
Who’s saying this
- Ancient + Brave — a brand: sells collagen, supplements and functional blends
How we know who this is
- “Founded by Kate Prince, Ancient + Brave is a mission-driven wellness brand with an award-winning range of collagen, supplements and functional blends.” (their page)
Reishi mushroom improves sleep and helps with insomnia.
We haven’t found evidence strong enough to support this or rule it out.
What was measured is not yet noted.
Who’s saying this
- Tom's Guide — a publisher: tech publication; part of Future US Inc
How we know who this is
- “Tom's Guide is more than just reviews.” (their page)
- “Tom's Guide is part of Future US Inc, an international media group and leading digital publisher.” (their page)
- Tom's Guide — a publisher: tech publication; part of Future US Inc
Reishi mushroom supplements boost the immune system.
Supports — suggestivehealth and safety evidence
Measured as a biomarker.
- Evaluation of Immune Modulation by β-1,3; 1,6 D-Glucan Derived from Ganoderma lucidum in Healthy Adult Volunteers, A Randomized Controlled Trial (Peer-reviewed) · Funded by SBG Biomedical Research (Los Angeles, CA, USA) (industry)
- Medicinal Mushrooms (PDQ®)–Health Professional Version (Regulatory) · Funding not checked
Who’s saying this
- Fungies LLC — a brand: sells functional mushroom gummies
How we know who this is
- “© 2026, Fungies LLC.All Rights Reserved.” (their page)
- “Join the buzz and see how Fungies are transforming lives with delicious, functional mushroom gummies.” (their page)
Reishi mushroom fights cancer.
Does not supporthealth and safety evidence
Studied in: cancer patients (advanced lung cancer and colorectal adenoma patients).
Measured as an outcome.
- Medicinal Mushrooms (PDQ®)–Health Professional Version (Regulatory) · Funding not checked
Who’s saying this
- Ancient + Brave — a brand: sells collagen, supplements and functional blends
How we know who this is
- “Founded by Kate Prince, Ancient + Brave is a mission-driven wellness brand with an award-winning range of collagen, supplements and functional blends.” (their page)