Fomes Fomentarius (Fomes fomentarius): Benefits, Dosage, Safety & Evidence

Frequently asked questions

How does Fomes fomentarius work in the body?

Fomes fomentarius contains bioactive compounds including fomentarins, polyphenols, and triterpenoids that contribute to its medicinal effects. These compounds exhibit immunomodulatory and anti-inflammatory properties through modulation of immune cell activity and cytokine production. The polyphenols provide antioxidant activity, while triterpenoids may support wound healing processes. Evidence level C indicates these mechanisms are primarily supported by in vitro and animal studies rather than extensive human trials.

Does Fomes fomentarius interact with any medications?

Fomes fomentarius may interact with immunosuppressant medications due to its immunomodulatory properties. Because it can stimulate immune activity, individuals taking drugs to suppress immune function should avoid this fungus. Additionally, its potential effects on blood clotting suggest caution when combined with anticoagulant or antiplatelet medications. Always consult a healthcare provider before combining Fomes fomentarius with prescription medications. Evidence level C.

What is the recommended dosage for Fomes fomentarius?

The typical adult dosage for Fomes fomentarius is 1-3 grams of extract daily, traditionally divided into smaller doses throughout the day. This can be taken as capsules, tinctures, or powdered extracts mixed with water. Dosage may vary depending on the specific preparation and concentration. Start with the lower end of the range and adjust based on individual response. Consult a qualified herbalist or healthcare provider for personalized dosing recommendations. Evidence level C.

Is Fomes fomentarius safe during pregnancy and breastfeeding?

Fomes fomentarius is considered unsafe during pregnancy and breastfeeding. The immunomodulatory compounds may affect fetal development or infant health, and insufficient safety data exists for these populations. Women who are pregnant, planning to become pregnant, or breastfeeding should avoid this herb entirely. Additionally, individuals with autoimmune conditions should not use Fomes fomentarius as it may stimulate immune activity and worsen symptoms. Evidence level C.

What is Fomes fomentarius used for in traditional medicine?

Fomes fomentarius has been used traditionally across Northern Europe and Siberia for wound healing and as a hemostatic agent to stop bleeding. Folk medicine applications include supporting immune function, reducing inflammation, and promoting tissue repair. Historically, it was also valued as tinder for starting fires. Modern herbalists may recommend it for similar purposes, though clinical evidence remains limited to level C, indicating a need for more rigorous human studies.

PubMed-compiled information sheet

This sheet was compiled from PubMed (NIH) abstracts using AI assistance. Every factual claim is cited to a real PubMed article (see the source list). It has not yet been human-reviewed — confirm with a healthcare provider before use.

Compiled from 30 PubMed articles · model: gemma4:31b

Summary

Fomes fomentarius, known as the tinder polypore, is a wood-decaying macrofungus with recognized medicinal value and biotechnological applications [PMID:27910753, PMID:37017659].

Background

Fomes fomentarius is a white-rot basidiomycete fungus that colonizes coarse wood and standing trees, particularly birch [PMID:20668917, PMID:38535205]. It is characterized by hoof-shaped fruiting bodies and is distributed across North America, Europe, and Asia [PMID:27910753, PMID:37017659].

Traditional uses

Traditionally used worldwide as tinder for starting fires, for ritual purposes, in artworks (clothing, frames, ornaments), and to treat human diseases including wounds, gastro-intestinal disorders, liver-related problems, inflammations, and various cancers [PMID:37017659]. In central European folk medicine, it was used for dysmenorrhoea, haemorrhoids, bladder disorders, pyretic diseases, coughs, cancer, and rheumatism [PMID:24786572].

Active compounds

The fungus contains phenolics, carbohydrates (including beta-glucans and alpha-glucans), minerals, and crude fat [PMID:33822505]. Specific compounds include melanin-like pigments (melanins, lignins, and humic acids), ergosterol peroxide, ergost-7-en-3-one [PMID:33822505, PMID:10963454], and ergostane-type sterols known as fomentarols A-D [PMID:23747096]. It also contains the anti-inflammatory compound methyl 9-oxo-(10E,12E)-octadecadienoate (FF-8) [PMID:26539049] and chitin [PMID:35381153].

Mechanism of action

The compound FF-8 attenuates lipopolysaccharide-induced inflammatory responses in murine macrophages by blocking the phosphorylation of STAT3 and downregulating inducible NO synthase and cyclooxygenase-2 expression [PMID:26539049].

Clinical evidence

Evidence DInflammation (Murine model)

Methyl 9-oxo-(10E,12E)-octadecadienoate (FF-8) suppressed the secretion of nitric oxide, prostaglandin E2, and inflammatory cytokines TNF-α and IL-6 [PMID:26539049]

Evidence DCancer (In vitro)

An aqueous alkali extract showed dose-dependent cytotoxicity against murine fibroblasts (L929) and cutaneous melanoma cells (COLO-818), while human colorectal adenocarcinoma cells (Caco-2) did not react [PMID:36004705]

Evidence DHoney Bee Viruses

Extracts from Fomes mycelium reduced levels of deformed wing virus (DWV) and Lake Sinai virus (LSV) in a dose-dependent manner [PMID:30287824]

Evidence summary

The current evidence is primarily based on in vitro studies, animal models, and traditional use reviews (Level C and D). There are no human clinical trials (Level B) or meta-analyses (Level A) provided in the source material.

PubMed sources

1.PMID: 27910753 (2016) — Medicinal Value and Taxonomy of the Tinder Polypore, Fomes fomentarius (Agaricomycetes): A Review. · International journal of medicinal mushrooms
2.PMID: 37017659 (2023) — Medicinal Potential of the Insoluble Extracted Fibers Isolated from the Fomes fomentarius (Agaricomycetes) Fruiting Bodies: A Review. · International journal of medicinal mushrooms
3.PMID: 34933689 (2021) — Extrusion-based additive manufacturing of fungal-based composite materials using the tinder fungus Fomes fomentarius. · Fungal biology and biotechnology
4.PMID: 35209941 (2022) — Establishment of the basidiomycete Fomes fomentarius for the production of composite materials. · Fungal biology and biotechnology
5.PMID: 20668917 (2011) — Ecology of coarse wood decomposition by the saprotrophic fungus Fomes fomentarius.

Fomes Fomentarius

Sources & Citations

Calculate a safe dose of Fomes Fomentarius