A slender white cultivated mushroom widely eaten in East Asia, sold as an extract for immune claims. Its most-studied constituent is an immunomodulatory protein called FIP-fve, along with the usual fungal beta-glucans.
Enokitake's reputation rests largely on an observational finding: cancer mortality was reported to be lower among enoki-growing households in Nagano prefecture than in the surrounding population. That is an ecological comparison between farming families and everyone else, a design that cannot separate a mushroom from everything else that differs between those groups, and it has been repeated in supplement marketing for decades as though it were a trial. The laboratory work on the FIP-fve protein is real and interesting, including effects on allergic airway responses in mice. Human trials are essentially absent. The mushroom is also worth knowing about for an unrelated reason: enoki has been the subject of large international recalls for Listeria contamination.
Rarely standardised; occasionally reported as polysaccharide or protein content — a product without this marker may not resemble what was studied.
Also known as
Enoki, Golden needle mushroom, Winter mushroom, Velvet shank
Regulation: Sold as a dietary supplement in the US with no pre-market efficacy review. Fresh enoki has been recalled in multiple countries following Listeria monocytogenes outbreaks, including cases with deaths, which is a food-safety matter rather than a supplement one.
What the research used
The amounts, forms and durations published trials of Enokitake extract actually administered.
These are the amounts published trials administered — not a recommendation, and not a dose to copy. Trial participants were screened, supervised and given a characterised preparation. What is in a retail bottle is frequently not what was studied, and the amount that suits one person is not general advice.
Studied for Supplement use
300–1000 mg
Not enough
Extract capsule, daily
What products contain. No human trial has established a dose of enokitake extract for any outcome, so this reflects manufacturing convention only.
This is general information about food, not medical advice. It cannot diagnose, treat or replace guidance from a clinician who knows your history.
When it was taken
Each window says whether a trial compared it against an alternative, or whether it is convention and pharmacology. Most timing advice is the second kind.
None of the timings below were directly compared in a trial. They reflect how the research happened to dose, or what the pharmacology implies — which is not the same as a timing being better.
🕐Any time
Not enough
No timing research exists for enokitake in any form.
Timing was not directly compared. This reflects convention or how the compound behaves in the body, not a trial showing this window works better.
The evidence in depth
Best supported: Not enough
What each association actually rests on, and the papers behind it. A rating describes the state of the research, not how promising the supplement sounds. How we rate evidence.
The FIP-fve protein modulates immune responses in cell culture and in mice, including allergic airway models. There are no controlled human trials of enokitake extract for immune outcomes.
What may be going on: FIP-fve is a fungal immunomodulatory protein that stimulates cytokine production in laboratory systems; enoki also contains beta-glucans.
Not enough evidence. Not enough human research to say anything useful yet.
No source is attached to this association yet, so it is rated not enough evidenceby default. It is listed because people commonly ask about it — not because there is evidence for it.
Reduction of allergic airway inflammation has been shown in mice. Human asthma or allergy trials have not been conducted.
Not enough evidence. Not enough human research to say anything useful yet.
No source is attached to this association yet, so it is rated not enough evidenceby default. It is listed because people commonly ask about it — not because there is evidence for it.
Things to know
Interactions, contraindications and dose limits, most serious first. Concentrated extracts interact with medication in ways the whole plant does not, so this section carries more weight here than it does on a food page.
Worth knowing
The Nagano finding is an ecological observation, not a trial
The lower cancer mortality reported among enoki-farming households compared with the general population is a comparison between two very different groups, subject to every confounder that separates farmers from everyone else. It has been recycled through supplement marketing for decades and it does not support a health claim.
Worth knowing
Listeria outbreaks in fresh enoki
Fresh enoki mushrooms have caused multinational Listeria monocytogenes outbreaks with hospitalisations, deaths and miscarriages, leading to large recalls. Pregnant people and anyone immunocompromised should not eat them raw, and cooking thoroughly is the standard advice.
Allergy
Fungal allergy
Allergic reactions to edible mushrooms occur in sensitised people, and concentrated extracts present a larger protein load than a culinary portion.
Worth knowing
No human efficacy or safety data for the extract
There are no human trials of enokitake extract for any outcome, and no long-term safety data at supplement doses. The food has a long history of consumption; the concentrate does not.
In the food catalogue
The whole-food form, where one exists. The evidence for a concentrated extract rarely transfers to the food, or the other way round — these are cross-links, not equivalents.