Tinder Fungus (Fomes fomentarius)
A legendary bracket fungus and Ötzi's companion — for millennia the primary raw material for fire-starting in Europe, today mostly a historical and ethnobotanical topic rather than a dietary supplement.
Table of contents
TL;DR
A legendary bracket fungus and Ötzi's companion — for millennia the primary raw material for fire-starting in Europe, today mostly a historical and ethnobotanical topic rather than a dietary supplement.
- →Extracts show significant antioxidant activity in in vitro studies
- →Preliminary laboratory studies describe antimicrobial and antibiofilm activity
- →Historically prized as a wound-dressing material
| Latin name | Fomes fomentarius |
|---|---|
| Family | Polyporaceae |
| Active compounds | Phenolic compounds (shown only in in vitro studies) |
| Form | No commercial form — the fruiting body is inedible, significance purely historical |
| Level of evidence | In vitro only; zero studies in humans |
| Interactions | None documented — the species isn't consumed |
| Status | Not a dietary supplement or a drug — significance mainly historical and ethnobotanical |
Understand
Overview
Tinder fungus (Fomes fomentarius) is a species that forms hard, hoof-shaped, perennial fruiting bodies on the trunks of deciduous trees. Its significance to humans is primarily historical — the inner layer of the fruiting body was processed to produce a material called amadou (tinder), used for fire-starting. The most famous archaeological evidence is the finds beside Ötzi's remains.
Today there's no consumer market built around this mushroom — available research is limited almost entirely to in vitro laboratory tests.
Who can this actually help, and who not: bushcraft enthusiasts, historical reenactors and ethnobotany fans — as a curiosity about historical fire-starting techniques. For people seeking health support, this species has nothing real to offer: there are no studies in humans, the fruiting body is inedible, and the only available data comes from test-tube experiments.
Where it's found
Fomes fomentarius grows on the trunks of living and dead deciduous trees — most often beech and birch — throughout Europe, Asia and North America, causing white rot of wood.
History of use
Tinder produced from this fungus was for millennia one of the primary fire-starting materials in Europe — the most famous evidence is the finds beside the remains of Ötzi from roughly 5,300 years ago. Besides fire-starting, tinder was also used as a makeshift dressing to stop bleeding.
Mechanism of action
The biological mechanisms come exclusively from in vitro studies and include antioxidant activity linked to phenolic compound content and antimicrobial activity against select bacteria. The historical use of tinder as a wound dressing to stop bleeding most likely stems mainly from the material's physical properties.
It's worth emphasizing that both available studies are purely chemical and laboratory-based — they measure the extract's ability to neutralize radicals in test-tube assays (including in comparison to the synthetic standard BHT) and to inhibit the growth of select bacterial strains and biofilm on a plate, not an effect in a living organism.
Evidence: limited — based on 2 studies in this database.
Benefits
Common myths
MythTinder fungus is the same thing as chaga.
FactThese are entirely different species with different uses.
Forms & variants
Tinder Fungus (Fomes fomentarius) comes in several forms that differ in bioavailability and use case — the form you pick genuinely matters for how effective the supplementation is.
Amadou (tinder) — raw material
A soft, felt-like layer of the fruiting body obtained by soaking and beating the fibers.
Best for: Historical reenactment, bushcraft
Practice
Frequently asked questions
Not in practice. There's no established consumer market built around this species.
Dosage & timing
Typical dose
Not applicable — the species isn't used as a dietary supplement or drug in modern practice
Form
Historically: processed tinder for non-medical purposes
This entry is purely historical and informational. In case of injury, sterile dressings should be used.
Best times to take it
- Not applicable
Safety
Side effects & contraindications
Possible side effects
Not consumed or taken orally in modern practice
The fruiting body is hard and inedible
Contraindications
Allergy to mushrooms and mushroom spores
Open wounds — using non-sterile tinder carries a risk of infection
Interactions
No documented drug interactions
Is it worth taking?
Who it's for
- Extracts show significant antioxidant activity in in vitro studies
- Preliminary laboratory studies describe antimicrobial and antibiofilm activity
- Historically prized as a wound-dressing material
Not for
- Allergy to mushrooms and mushroom spores
- Open wounds — using non-sterile tinder carries a risk of infection
Evidence
Worth knowing
Processed tinder was found beside the remains of Ötzi from roughly 5,300 years ago.
For centuries in Europe, the fruiting body was used to make not just fire-starting material but also hats and clothing items.
Studies
Extracts from Fomes fomentarius showed higher antioxidant activity than the synthetic standard BHT, along with significant antimicrobial and antibiofilm activity.
İrez E.İ., Hacıoğlu Doğru N., Demir N., Biologica Nyssana, 2021
Evaluation of antioxidant, antimicrobial and antibiofilm activities of Fomes fomentarius
Early-stage evidenceİrez E.İ., Hacıoğlu Doğru N., Demir N. · Biologica Nyssana · 2021
Extracts showed higher antioxidant activity than the standard BHT along with significant antimicrobial and antibiofilm activity.
View studyBioactive Compounds and Pharmacological Properties of the Polypore Fomes fomentarius
Early-stage evidenceErbiai E.H., et al. · International Journal of Molecular Sciences · 2025
Analysis of fruiting bodies showed a high content of phenolic compounds and a broad spectrum of antimicrobial activity.
View studySources & bibliography
Citations are illustrative for this demo version and require full bibliographic verification by the editorial team before production publication.
Compare with similar entries
About the authors of this entry
Author
Julia WiśniewskaEditor, Neurohacking & Sleep
Julia writes about nootropics, chronobiology and recovery protocols.
45 publications on this site
Medical review
dr Piotr ZielińskiEndocrinologist
Piotr reviews content on hormones, metabolic health and supplement pharmacology.
131 publications on this site
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Comments (2)
- KW
Kasia W. 2 weeks ago
Very clearly explained, especially the interactions section — I hadn't seen it laid out this well anywhere else.
- MT
Marek T. a month ago
Are you planning to update this with the newest study from this year? I saw an interesting meta-analysis.