ErinaPrime™
Hericium erinaceus
No grain.
No starch.
No filler.
Just 100% pure mycelium.
Standardized Lion’s Mane mycelium with 1% (10 mg/g) Erinacine A. Grown in liquid culture, then freeze-dried.
| Fungal Part | Pure mycelium grown in liquid culture |
| Erinacine A | 1% |
| Beta-(1,3)(1,6)-glucan | 8% |



Hericium erinaceus
Standardized Lion’s Mane Mycelium
ErinaPrime™ is 100% Lion’s Mane mycelium, freeze-dried into a powder and standardized to 1% Erinacine A. Erinacine A is a compound that only develops in the mycelium of Lion’s Mane. It is not present in the mushroom. The powder contains no grain substrate, no added starch, and no fillers.
Erinacine A
(10 mg/g) guaranteed
1%
1% Erinacine A
100% Pure Mycelium
Third-Party Tested
Clinically Studied

No Grain. No Starch. No Filler.
U.S. Grown lion’s mane mycelium fermented grain is more grain than mycelium.
The ingredient at a glance
Three things that make ErinaPrime™ different.
If you’ve evaluated Lion’s Mane mycelium ingredients before, these are the points where ErinaPrime™ diverges from mycelium fermented grain.
01 / COMPOSITION
100% Mycelium.
ErinaPrime™ is freeze-dried Lion’s Mane mycelium. The mycelium is grown in liquid culture and separated from the substrate before drying, so the finished powder has no grain, no starch, and no carrier material in it.
For comparison: most “Lion’s Mane mycelium” on the market is mycelium fermented grain which is more grain than mycelium.
02 / ACTIVE COMPOUNDS
1% Erinacine A in Every Batch.
Every batch is assayed for Erinacine A and released at 1% (10 mg/g) or higher. Testing uses validated HPLC methods from accredited third-party labs.
Most mycelium fermented grain are not tested for Erinacine A and contain almost none.
03 / COST PER ACTIVE
Pay for the Active, not the Grain
Mycelium fermented grain is inexpensive because most of it is grain. ErinaPrime™ delivers cost effective options for Erinacine A delivery.
Lower active concentration means a much larger dose per recommended serving of Erinacine A.
Side by side
What “Lion’s Mane mycelium” Actually Means in the Supply Chain.
The label looks the same. The material is not. Here’s what shows up on a typical mycelium fermented grain spec sheet versus ErinaPrime™.
ErinaPrime™
100% Mycelium
- Composition: 100% Lion’s Mane mycelium. No grain, no starch, no fillers. Just 100% mycelium.
- Growth Method: submerged liquid fermentation. Mycelium is harvested from the liquid and freeze-dried as pure mycelium.
- Erinacine A Content: 1% (10 mg/g) verified per batch. Declared on the specification sheet and on the COA.
- Pricing: tied to active concentration. Cost per effective dose of Erinacine A is affordable.
U.S. Grown
Mycelium Fermented Grain
✕ Composition: More grain (oats, sorghum, or rice) than mycelium by weight. Mycelium colonizes the grain substrate; both are dried and milled together.
✕ Growth Method: solid-state fermentation using a grain substrate (rice, oats, sorghum). No separation step.
✕ Erinacine A Content: typically below the limit of detection on third-party assays. Not declared on specification sheet or labels.
✕ Pricing: low per kilo. Cost per effective dose of Erinacine A is high or not definable.
Why erinacine A
A Compound that only Develops in the Mycelium.
Erinacine A is a diterpenoid from the cyathane family. The reason it’s useful as a formulation target is that it only develops in the mycelium of Lion’s Mane. Mushroom extracts do not contain it.
How it acts in the body
Erinacine A is small and lipophilic enough to cross the blood-brain barrier. In published research, it functions as a stimulator of NGF (nerve growth factor) and BDNF (brain-derived neurotrophic factor) signaling, two of the central pathways in neurogenesis and synaptic plasticity.
Crosses the blood-brain barrier
Stimulates NGF
Stimulates BDNF
Active in studied neurogenesis pathways
The formulation math
The amount used in human structure-function studies is around 3 mg of Erinacine A. At 10 mg/g of Erinacine A in ErinaPrime™, an effective dose would start at 300mg.
Erinacine A Testing
ErinaPrime™ vs. Mycelium Fermented Grain

*Based on internal HPLC testing at Nammex.
Clinical research
Two Published Human Trials. More Underway.
The research below was conducted on ErinaPrime™, not on a different Lion’s Mane preparation or on isolated Erinacine A.
Cognitive function
Human trial on cognitive endpoints
Peer-reviewed study published in 2024. Looked at cognitive endpoints in adults supplementing with standardized Lion’s Mane mycelium with verified erinacine A.
Auditory function
Human trial on hearing support
Peer-reviewed study published in 2022. Investigated neural support for auditory function using standardized Lion’s Mane mycelium with verified erinacine A.
Underway
Additional human trials in progress
Our manufacturing partner has additional human clinical work currently in progress on this same ingredient. Results will be made available as they’re published.
50+
Years of Mushroom Growing Experience
Where ErinaPrime™ fits with Nammex
Different Product. Same Quality.
Nammex has been producing mushroom ingredients since 1989. Almost all of that history is in Certified Organic mushroom extracts from species like reishi, turkey tail, cordyceps, and lion’s mane, with verified beta-glucan and measured secondary compounds.
ErinaPrime™ is the start of pure mycelium standardized to Erinacine A. Erinacine A only develops in the mycelium of Lion’s Mane and is not present in the mushroom, so this is an important active we couldn’t deliver from our existing extract line.
FAQ
Questions From You.
Still have questions? Ask us directly.
Talk to our team and sample ErinaPrime™ today.
Request a sample, ask for the spec sheet and a representative COA, or schedule a call to discuss how ErinaPrime™ fits into your next formulation.
