Does Lion's mane (Hericium erinaceus) work?

Read Off Label rates the evidence for Lion's mane (Hericium erinaceus) as Weak-Moderate and the benefit magnitude as med, producing an overall grade of B (6.4/10). Mori 2009 Yamabushitake MCI trial (n=30) showed cognitive scale improvements at weeks 8-16 that reversed after discontinuation.

Is Lion's mane (Hericium erinaceus) safe?

Lion's mane (Hericium erinaceus) has a low risk profile in published human data. Legal status: OTC. This is not medical advice — see the disclaimer.

Rankings / Cognitive

Lion's mane (Hericium erinaceus)

Cognitive · Medicinal mushroom

Tier B

Reviewed by Read Off Label · Last reviewed Jun 8, 2026 · How we grade

anti-inflammatoryotc

6.4 / 10

Tier B

Ev 4.5 Bn 5 Sf 9

Bottom line

Read Off Label grades Lion's mane (Hericium erinaceus) as B (6.4/10) based on weak-moderate evidence, med benefit magnitude, and a low-risk safety profile.

Mori 2009 Yamabushitake MCI trial (n=30) showed cognitive scale improvements at weeks 8-16 that reversed after discontinuation.

Typical use: 500-3000 mg/day fruiting body extract; 1-5 g crude powder — OTC.

What this is

Mori 2009 Yamabushitake MCI trial (n=30) showed cognitive scale improvements at weeks 8-16 that reversed after discontinuation. Docherty 2023 showed acute Stroop task improvement in young adults. Evidence is suggestive but limited in scale. Dual extract (water + alcohol) preferred to capture both polysaccharides and erinacines.

Mechanism

Hericenones and erinacines stimulate nerve growth factor (NGF) synthesis and promote neurite outgrowth; anti-inflammatory; modulates gut-brain axis

Dose & route

500-3000 mg/day fruiting body extract; 1-5 g crude powder

Citations

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Common questions

Does Lion's mane (Hericium erinaceus) work?: Read Off Label rates the evidence for Lion's mane (Hericium erinaceus) as Weak-Moderate and the benefit magnitude as med, producing an overall grade of B (6.4/10). Mori 2009 Yamabushitake MCI trial (n=30) showed cognitive scale improvements at weeks 8-16 that reversed after discontinuation.
Is Lion's mane (Hericium erinaceus) safe?: Lion's mane (Hericium erinaceus) has a low risk profile in published human data. Legal status: OTC. This is not medical advice — see the disclaimer.
What is the typical dose for Lion's mane (Hericium erinaceus)?: 500-3000 mg/day fruiting body extract; 1-5 g crude powder
How does Lion's mane (Hericium erinaceus) work?: Hericenones and erinacines stimulate nerve growth factor (NGF) synthesis and promote neurite outgrowth; anti-inflammatory; modulates gut-brain axis

This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.