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Evidence-Based Supplement Research
Evidence-Based Supplement Research

Lion's Mane and Improved Cognitive Function

Research synthesisLow evidenceModerate effect3 studies · 3 beneficial · 0 neutral · 0 harmful

Across 3 studies, all reported beneficial effects of Lion's Mane on cognitive function, with effect sizes ranging from small to moderate (predominantly moderate). The most robust evidence comes from a randomized controlled trial showing quicker Stroop task performance at 1.8 g/day over 28 days in healthy adults. The evidence base is small (only 3 studies), so conclusions should be considered preliminary.

  • Effective dose range: 1.8 g/day
  • Studied populations: healthy adults aged 18–45 years

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Available evidence is overwhelmingly positive — clinical literature in this area is subject to publication bias (null-result studies are less likely to be published or indexed). One study included participants with and without dementia, but findings may not generalize broadly.

Generated May 13, 2026
Doses used in studies
  • g/day: 1.8 (median 1.8, IQR 1.81.8) 1 study
Time to effect
Median: 4 weeks · IQR 4 weeks4 weeks · Range 4 weeks4 weeks — Reported in 1 of 3 studies
Safety in these studies
3 of 3 papers
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