# Yamabuki King Lion's Mane (Hericium erinaceus 'Yamabuki King')

**Canonical URL:** https://ingredients.hermeticasuperfoods.com/ingredients/yamabuki-king-lion-s-mane
**Data Source:** Hermetica Superfoods Ingredient Encyclopedia
**Updated:** 2026-03-24
**Evidence Score:** 2 / 10
**Category:** Mushroom/Fungi
**Also Known As:** Hericium erinaceus 'Yamabuki King', Lion's Mane Mushroom, Yamabushitake, Bearded Tooth Mushroom, Pom Pom Mushroom, Monkey Head Mushroom, Hou Tou Gu

## Overview

Yamabuki King is a cultivated strain of Hericium erinaceus selected for potentially elevated concentrations of hericenones and erinacines, bioactive compounds that stimulate [nerve growth factor](/ingredients/condition/cognitive) (NGF) synthesis in neuronal tissue. These terpenoid and aromatic compounds act on TrkA receptors and downstream MAPK/ERK signaling pathways, making this strain of particular interest in preclinical neurotrophin research.

## Health Benefits

• Potential neuroprotection through [nerve growth factor](/ingredients/condition/cognitive) (NGF) promotion (preliminary evidence from in-vitro studies only)
• May support neuronal survival via hericenones and erinacines compounds (preclinical evidence only)
• Possible [immunomodulatory](/ingredients/condition/immune-support) activity from HEP-W polysaccharides (preliminary evidence)
• Traditional use for memory support (historical use only, no clinical validation)
• Traditional [digestive health](/ingredients/condition/gut-health) support (historical use only, no clinical validation)

## Mechanism of Action

Erinacines (diterpenoids found in the mycelium) cross the blood-brain barrier and upregulate NGF mRNA expression, activating TrkA receptors and triggering the MAPK/ERK and PI3K/Akt signaling cascades that promote neuronal survival and differentiation. [Hericenone](/ingredients/condition/cognitive)s (aromatic compounds concentrated in the fruiting body) independently stimulate NGF secretion from 1321N1 astrocytoma cells in vitro. The HEP-W [beta-glucan](/ingredients/condition/immune-support) polysaccharides modulate immune activity by binding Dectin-1 receptors on macrophages and dendritic cells, promoting [cytokine](/ingredients/condition/inflammation) release including TNF-alpha and IL-6.

## Clinical Summary

No clinical trials have been conducted specifically on the Yamabuki King cultivar; available evidence derives from studies on Hericium erinaceus broadly and must be interpreted with caution when applied to this strain. The most cited human trial (Mori et al., 2009, n=30) found that 3g/day of H. erinaceus powder over 16 weeks significantly improved Hasegawa Dementia Scale scores in mild [cognitive](/ingredients/condition/cognitive) impairment patients, with benefits reversing after discontinuation. A 2023 randomized trial (n=41) using 1.8g/day of H. erinaceus extract over 12 weeks demonstrated improvements in stress and [sleep quality](/ingredients/condition/sleep) metrics versus placebo. No strain-specific pharmacokinetic or efficacy data exist for Yamabuki King, so all neurological benefit claims remain preliminary and extrapolated from general H. erinaceus research.

## Nutritional Profile

Yamabuki King is a cultivated variety of Hericium erinaceus with nutritional composition broadly consistent with the species, though variety-specific quantitative data is limited. General H. erinaceus nutritional profile per 100g dry weight: Protein: 20–30g (containing all essential amino acids; glutamic acid, aspartic acid, and leucine predominant); Fat: 3–5g (primarily linoleic acid and oleic acid); Carbohydrates: 50–60g total; Dietary fiber: 15–25g (including [beta-glucan](/ingredients/condition/immune-support)s estimated at 3–5g/100g dry weight, primarily β-1,3/1,6-glucan linkages); Ash/minerals: 6–10g. Key minerals: Potassium (~3,000–4,500mg/100g dry), Phosphorus (~900–1,200mg/100g dry), Zinc (~5–8mg/100g dry), Iron (~4–7mg/100g dry), Calcium (~20–40mg/100g dry), Magnesium (~100–200mg/100g dry). Vitamins: Ergosterol (provitamin D2 precursor): ~100–400mg/100g dry weight (converts to vitamin D2 upon UV exposure); B-vitamins present including thiamine, riboflavin, niacin, and B6 in modest amounts. Bioactive compounds: [Hericenone](/ingredients/condition/cognitive)s (A–H, primarily in fruiting body): estimated 0.05–0.5mg/g dry weight; Erinacines (A–K, primarily in mycelium): 0.1–1.0mg/g dry weight; HEP polysaccharides: variable by extraction method. Yamabuki King phenotypically produces larger, denser fruiting bodies with reported higher polysaccharide content versus wild types, but no peer-reviewed variety-specific quantification is published. Bioavailability note: Raw consumption reduces bioavailability of polysaccharides and hericenones; cooking or hot-water extraction significantly improves polysaccharide solubility and absorption. Erinacines show better extraction via ethanol/methanol solvents.

## Dosage & Preparation

No clinically studied dosage ranges are available for Yamabuki King or standardized H. erinaceus in human trials. Preclinical contexts mention erinacine A at 5 mg/g dry mycelium weight, but no human dosages for extracts or powders have been established. Consult a healthcare provider before starting any new supplement.

## Safety & Drug Interactions

Hericium erinaceus, including cultivated strains like Yamabuki King, is generally well-tolerated; the most commonly reported adverse effects are mild gastrointestinal discomfort and, in rare cases, skin rash or respiratory irritation potentially indicating allergic sensitization. Individuals with mushroom allergies or known mold sensitivities should exercise caution and consult a healthcare provider before use. Due to preliminary [immunomodulatory](/ingredients/condition/immune-support) activity via beta-glucan pathways, caution is warranted in individuals on immunosuppressant medications such as cyclosporine or tacrolimus, as additive or antagonistic effects are theoretically possible though unstudied. Safety data in pregnancy and lactation are absent, and use is not recommended in these populations until adequate evidence is available.

## Scientific Research

No human clinical trials, RCTs, or meta-analyses were found specifically for the Yamabuki King cultivar. Available research pertains only to standard H. erinaceus with preclinical neuroprotection studies showing [hericenone](/ingredients/condition/cognitive)s and erinacines promoting neuronal survival in vitro, but human data is limited.

## Historical & Cultural Context

In Eastern Asian traditional medicine, particularly Chinese and Japanese practices, H. erinaceus (yamabushitake) has been used for centuries both culinarily and medicinally to improve [memory](/ingredients/condition/cognitive) and [digestion](/ingredients/condition/gut-health). It is characterized by a sweet taste and mild properties in traditional preparations.

## Synergistic Combinations

NGF-supporting compounds, [neuroprotective](/ingredients/condition/cognitive) [antioxidant](/ingredients/condition/antioxidant)s, cognitive nootropics, [adaptogen](/ingredients/condition/stress)ic mushrooms, omega-3 fatty acids

## Frequently Asked Questions

### What makes Yamabuki King Lion's Mane different from standard Lion's Mane?

Yamabuki King is a selectively cultivated strain of Hericium erinaceus bred to potentially express higher concentrations of hericenones in the fruiting body and erinacines in the mycelium compared to wild-type specimens. However, no published peer-reviewed comparative phytochemical analyses between Yamabuki King and standard H. erinaceus cultivars have been released, so claims of superior bioactive content remain commercially asserted rather than independently verified.

### Does Yamabuki King Lion's Mane actually increase NGF in humans?

Direct human evidence for Yamabuki King increasing NGF levels is absent. In vitro studies using H. erinaceus hericenone extracts demonstrated NGF secretion stimulation in 1321N1 astrocyte cell lines, and animal studies showed elevated hippocampal NGF protein levels after erinacine A administration. Human NGF elevation from oral H. erinaceus supplementation has not been directly quantified in published clinical trials, so this mechanism remains unconfirmed in living humans.

### What is the recommended dosage of Yamabuki King Lion's Mane?

No strain-specific dosage guidelines exist for Yamabuki King. Extrapolating from general H. erinaceus clinical research, doses of 1.8g to 3g per day of dried fruiting body powder or standardized extract have been used in human trials studying cognitive and mood outcomes over 12 to 16 weeks. Mycelium-based products containing erinacines may require different dosing than fruiting body preparations, and consumers should verify whether a product specifies fruiting body, mycelium, or a dual extract.

### Can Yamabuki King Lion's Mane help with anxiety or depression?

A 2010 randomized controlled trial (Nagano et al., n=30) found that 2g/day of H. erinaceus fruiting body powder over 4 weeks significantly reduced self-reported anxiety and depression scores in women compared to placebo, with effects attributed to possible modulation of the HPA axis and serotonergic pathways. These findings have not been replicated specifically for Yamabuki King, and the small sample size and single study limit conclusions. The mechanism may involve erinacine-driven NGF support in limbic regions, but this is speculative.

### Is Yamabuki King Lion's Mane safe to take with other nootropics or medications?

No drug interaction studies specific to Yamabuki King exist, and general H. erinaceus interaction data are sparse. Theoretically, its beta-glucan immunomodulatory activity could interfere with immunosuppressant drugs like cyclosporine, and its NGF-promoting activity warrants caution alongside prescription medications that affect neurotrophin signaling. Combining with other NGF-targeting compounds such as Bacopa monnieri or ashwagandha is common in nootropic stacks but lacks safety evaluation in controlled studies; always consult a licensed clinician before combining with prescription medications.

### How does the Yamabuki King cultivar compare to other Lion's Mane strains in terms of bioactive compound concentration?

The Yamabuki King cultivar is marketed as producing higher concentrations of hericenones and erinacines compared to standard Hericium erinaceus strains, though direct comparative chemical analyses in peer-reviewed literature remain limited. Most evidence for superior potency comes from preliminary in-vitro studies rather than standardized human trials. If bioactive content is your primary concern, look for products with third-party testing that verifies hericenone and erinacine percentages across different cultivars.

### Is Yamabuki King Lion's Mane better absorbed as a whole fruiting body, extract, or mycelium powder?

Fruiting body extracts typically contain higher concentrations of beta-glucans and bioactive compounds than mycelium-on-grain products, potentially offering better bioavailability for NGF-promoting compounds. However, standardized extracts (particularly those concentrated for hericenones and erinacines) may provide more consistent dosing than whole fruiting body powders. Individual absorption can vary based on digestive health, so some users report better results with dual-extracted forms that capture both water-soluble and alcohol-soluble compounds.

### What populations might benefit most from Yamabuki King Lion's Mane supplementation based on current research?

Individuals concerned with cognitive aging, neuronal health, or mild cognitive changes may be the intended population, though clinical evidence in humans remains preliminary. People with compromised immune function might theoretically benefit from the HEP-W polysaccharides, but this is supported only by preclinical data. Currently, the evidence base does not definitively establish which populations would benefit most, making this supplement most appropriate for those interested in experimental neuroprotection rather than those seeking proven therapeutic outcomes.

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*Source: Hermetica Superfoods Ingredient Encyclopedia — https://ingredients.hermeticasuperfoods.com*
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