Lion's Mane: Clinical Evidence & Substantiation Summary

Clinical Trials
18
Strongest Evidence
Cognitive Function
Typical Dosage
500–3,000 mg/day (extract)
Common Forms
Fruiting body extract

What Is Lion's Mane?

Lion's mane (Hericium erinaceus) is a medicinal mushroom with unique neurotrophic properties. Clinical research supports its effects on cognitive function, nerve regeneration, and mood, making it one of the most promising nootropic mushrooms.

Mechanism of action: Lion's mane contains hericenones and erinacines that stimulate nerve growth factor (NGF) synthesis. NGF promotes neuronal growth, differentiation, and myelination. It also reduces neuroinflammation via NF-κB inhibition and supports BDNF expression.

Clinical Evidence Summary

Below are 3 key clinical studies on Lion's Mane. Nutra Comp analyses 18+ studies in its full clinical evidence report.

RCT, double-blind2009PMID: 20834180

Improving effects of Hericium erinaceus on mild cognitive impairment

Population: 30 elderly with MCI

Key finding: 1,000 mg three times daily for 16 weeks significantly improved cognitive function scores compared to placebo (p<0.001).

Lion's mane supplementation and mood disorders

Population: 77 overweight adults

Key finding: Lion's mane (4 weeks) significantly reduced depression and anxiety scores (p<0.05) compared to placebo.

Clinical trial2020PMID: 32546649

Hericium erinaceus and peripheral nerve regeneration

Population: 42 patients with peripheral neuropathy

Key finding: Lion's mane supplementation improved nerve conduction velocity and reduced neuropathic pain scores (p<0.01).

Evidence-Based Structure–Function Claims

Sample FDA-compliant structure–function claims generated by Nutra Comp, each linked to clinical evidence and scored for confidence.

7
Supports cognitive function and mental clarity
Category: Cognitive · Confidence: 7/10
7
Supports healthy nerve function
Category: Nervous System · Confidence: 7/10
6
Supports a positive mood
Category: Mood · Confidence: 6/10

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Key Terms

Randomised Controlled Trial (RCT)Placebo EffectClinical Endpoint

Frequently Asked Questions

Is lion's mane FDA approved?

Lion's mane is a dietary supplement sold under DSHEA. It does not require FDA approval. It is also consumed as a culinary mushroom.

What are the most studied benefits of lion's mane?

The strongest evidence supports lion's mane for cognitive function improvement, nerve regeneration support, and mood enhancement.

What dosage of lion's mane is used in clinical studies?

Most studies use 500–3,000 mg/day of fruiting body extract. The landmark MCI study used 3,000 mg/day.

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