Lion's Mane Mushroom
Also known as: Hericium erinaceus, HE, Yamabushitake, Monkey Head Mushroom, Bearded Tooth Mushroom
Effective Dosage
No established dose from provided studies
What the Science Says
Lion's Mane is an edible medicinal mushroom (Hericium erinaceus) traditionally used in East Asian medicine. It contains bioactive compounds — including hericenones and erinacines — that may support nerve growth and brain health. Early human trials suggest possible modest improvements in cognitive function and mood, and a systematic review found small gains in memory scores in people with and without dementia, though the overall body of clinical evidence remains preliminary and inconsistent.
What It Doesn't Do
Not proven to reverse or prevent Alzheimer's disease in humans — the Alzheimer's research so far is computational and animal-based only. No strong evidence it boosts athletic performance. A single dose is unlikely to produce noticeable cognitive effects. Don't expect dramatic mood or memory changes — the human trials are small and results are mixed.
Evidence-Based Benefits
Preliminary clinical evidence suggests Lion's Mane may modestly improve cognitive function and mood in young adults after 28 days at 1.8 g/day, though findings are described as 'tentative' from a pilot study (PMID: 38004235). A systematic review found a combined weighted mean MMSE score increase of 1.17 in intervention groups across RCTs and pilot trials, suggesting potential neuroprotective and cognitive benefits (PMID: 40959699). Preclinical data indicate antioxidant activity, dopamine recovery in Parkinson's-like mouse models, and computational identification of bioactive compounds (erinacerin A, hericenone B) with acetylcholinesterase-inhibiting potential relevant to Alzheimer's disease (PMID: 37110620, 38617639).
Weak EvidenceEffective at: No established dose from provided studies; clinical trials used 1.8 g/day
Source: auto-research
Absorption & Bioavailability
Unknown in humans from provided studies. Animal research suggests cell-wall-breaking processing may improve absorption of key compounds like erinacine A, but no human bioavailability data was provided.
Red Flags to Watch For
- Most compelling mechanistic research (nerve growth, Alzheimer's compounds) is from lab and animal studies — not proven in humans yet
- At least one acute human trial found no significant cognitive effect from a standardized extract
- Potential side effects include stomach discomfort, headache, and allergic reactions — often underreported in studies
- Over 1,000 registered supplement products exist, but clinical evidence supporting most product claims is still very limited
- Products vary widely in extract type, concentration, and whether they use fruiting body vs. mycelium — standardization is a major issue
Products Containing Lion's Mane Mushroom
See how Lion's Mane Mushroom is used in these analyzed products:
Best Earth Naturals Vegan Mushroom Complex
Supplement
Realmushrooms
Supplement
Host Defense Stamets 7 Capsules
Supplement
Brain Forza Organic Lion's Mane Mushroom
Supplement
Hello100 Lion's Mane Capsules
Supplement
Country Farms Collagen + Greens Powder
Supplement
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-04-06