Peptides went from a word nobody used to the loudest aisle in the supplement shop. Skin serums, injectables, recovery powders, all of them selling short chains of amino acids.
Almost none of those occur naturally in a food. Ours do, so we had them named and published rather than describing them in adjectives.
- Amino acids are the building blocks. Peptides are a few of them linked up.
- 31 peptides were identified by name in our two extracts.
- Four show up only in Reishi, five only in Lion's Mane.
- Lion's Mane carried all nine essential amino acids, Reishi eight.
- Everything here is from a published dataset anyone can download.
Peptides, in plain words
Protein is made from a set of building blocks called amino acids, and nine of them have to come from what you eat because your body cannot build them.
A peptide is a handful of those blocks linked together. Long chains fold up into proteins. Short ones behave differently, closer to a message than to material.
That is the whole reason the peptide category exploded. People are not buying them as food, they are buying something that reads as instructions.
Mushrooms make their own, and a careful extraction leaves them intact. The question is whether a brand can tell you which ones.
The peptides we found, and which mushroom they came from
Most of the 31 are short, two or three blocks long. A large family of them is built around glutamate, which is the same chemistry your body uses to handle its own antioxidant housekeeping.
Nine of the 31 showed up in one mushroom and not the other, a cleaner split than we expected from two fungi grown in the same room.
The rest appear in both, usually leaning toward one. Gly-Gly and Thr-Asp, for example, only turned up in the Lion's Mane extract.
Only in Reishi
Four of the thirty-one
- A glutamate pair with isoleucine
- A glutamate pair with leucine
- A glutamate pair with tyrosine
- A tyrosine and arginine pair
Only in Lion's Mane
Five of the thirty-one
- Gly-Gly, the simplest one in the set
- Thr-Asp and His-Glu
- Leu-Leu-Tyr, a three-block chain
- A glutamate chain with valine and glycine
Two that usually come out of a lab
Two of the peptides in our extracts, Val-Pro-Pro and Ile-Pro-Pro, are normally encountered somewhere else entirely. They are the ones food scientists make by fermenting milk, and they are produced commercially for ingredient suppliers.
We are not going to tell you what they do, because the honest answer is that what matters is the whole extract rather than any single chain in it.
What is worth saying is simply where they came from. Not a fermenter, not a synthesis step, just two mushrooms grown in Rockville and extracted without alcohol.
That is the difference between a peptide product and a food that happens to contain peptides.
Where the two mushrooms split on amino acids
The free amino acids are the other half of this. These are not locked up in protein, they are loose in the extract, which is why a liquid carries them through.
Lion's Mane came back with all nine of the essential ones. Reishi carried eight, with methionine the one that did not appear.
The profiles lean in different directions beyond that. Lion's Mane runs toward serine, threonine and the aspartate family. Reishi runs toward alanine, valine and tyrosine.
It lines up with how we sell them, which was not something we arranged. Reishi is the evening one and Lion's Mane is the daytime one, and the chemistry was already pointing that way.
| Reishi Elixir | Lion's Mane Elixir | |
|---|---|---|
| Essential amino acids | Eight of nine detected | All nine detected |
| Leans toward | Alanine, valine, tyrosine | Serine, threonine, aspartate |
| Peptides found only here | Four | Five |
| What we use it for | Winding down at night | Focus during the day |
What this does and does not mean
Being straight about the limits is part of publishing data. The peptide identifications are putative, which means they match the instrument's library and accurate mass but have not each been confirmed against a purchased standard.
We also do not put an amount on them. Naming a compound is a different claim from dosing it, and anyone quoting milligrams off a panel like this is overreaching.
The free amino acids are on firmer ground, measured against standards rather than inferred.
None of it is a health claim. It is an inventory, which is more than this category usually offers, and less than a clinical trial.
What makes AHARA different
Most mushroom brands buy bulk material from a supplier and print the species on the front. We grow our own organic mushrooms in Rockville, Maryland, and extract them without alcohol.
Both extracts were profiled at a leading metabolomics lab in Japan, which mapped over 2,000 metabolites, the most extensive metabolic analysis in the history of the mushroom industry. The peptide and amino acid panels on this page come straight out of that work.
It is published as a preprint with the full dataset on an open repository, so none of this has to be taken on trust.
You can read more about what the full map turned up, or the nutrition side of the Lion's Mane extract.
| Most brands | AHARA | |
|---|---|---|
| Peptides | Not measured, or bought as an isolate | 31 identified by name, naturally occurring |
| Amino acids | Not measured | 19 measured across both extracts |
| The data | A pass or fail sheet, if any | Full dataset published openly |
| Source | Bulk material bought from a supplier | Grown organic in Rockville, Maryland |
AHARA The Elixir Bundle
Both alcohol-free liquid extracts, Lion's Mane for the morning and Reishi for the night. Two droppers each, organic, grown in Rockville, Maryland, with over 2,000 metabolites mapped and published so you can read what is in the bottle.
Shop the bundleFrequently asked questions
What are mushroom peptides?
Peptides are short chains of amino acids, a few building blocks linked together rather than the long chains that make up a protein. Mushrooms produce their own, and an extraction that does not strip the mushroom down leaves them in the liquid. AHARA's published analysis identified 31 of them across the Reishi and Lion's Mane extracts.
Are mushroom peptides the same as the peptides people inject?
No, and it is worth being clear about it. Injectable and cosmetic peptides are single compounds synthesized in a lab at a set dose. What is in a mushroom extract is a naturally occurring mixture at whatever level the mushroom made it, which is a food, not a drug. We name ours rather than dosing them.
Do mushrooms contain amino acids?
Yes, and some of them sit loose in the extract rather than locked inside protein, which is why a liquid carries them. In AHARA's analysis 19 free amino acids were measured across the two extracts. All nine essential ones were detected in Lion's Mane and eight in Reishi.
Is reishi or lion's mane better for amino acids?
They are different rather than ranked. Lion's Mane carried all nine essential amino acids and leans toward serine, threonine and the aspartate family. Reishi carried eight and leans toward alanine, valine and tyrosine. Most people take Lion's Mane in the morning and Reishi at night, which is the simpler way to choose.
The bottom line
The peptide aisle is built on compounds made in a lab, and almost nobody selling mushrooms can tell you which ones are in the bottle.
We had ours named and published. 31 peptides, 19 free amino acids, and a dataset you can open yourself.
- Harvard T.H. Chan School of Public Health, The Nutrition Source. Protein.
- Cleveland Clinic. Amino Acid: Benefits & Food Sources.
- Malghan A, Malghan S, Grimes A. ChemRxiv. 2026. Comparative Dual-Platform Metabolomic Characterization of Commercial Ganoderma lucidum (Reishi) and Hericium erinaceus (Lion's Mane) Extracts.
- Malghan A, Malghan S, Grimes A. Zenodo. 2026. Comparative dual-platform metabolomic dataset of Reishi and Lion's Mane extracts (doi:10.5281/zenodo.21905399).
These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
