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Chaga
Inonotus obliquus
Capsules · PRIME189 zł
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Chaga (Inonotus obliquus)
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Chaga
Inonotus obliquus
Powders · LONGEVITY119 zł
MushroomsSubscription −15%
Chaga
Inonotus obliquus
Powders · PRIME189 zł
MushroomsSubscription −15%
Chaga
Inonotus obliquus
Capsules · LONGEVITY129 zł
MushroomsSubscription −15%
Chaga
Inonotus obliquus
Drops · PRIME169 zł
Chaga guide
Version 1.0 · Updated: 21 June 2026 · Subject-matter reviewer: Mateusz Rosa, founder of Aloha Fungi, international TCM therapist, Doctor of Acupuncture (WFAS), author.
Chaga in 60 seconds
- Inonotus obliquus, in Polish czerniak brzozy (birch canker), regionally błyskoporek podkorowy, czyreń, czarcie oko, Siberian czanga. A parasitic mushroom living mainly on birches in cold and temperate climates.
- Bioactive compounds: β-1,3/1,6-glucans above 30%, melanin (the protective black pigment), polyphenols, betulinic acid, inotodiol, lanosterol, ergosterol. More than 200 compounds have been described.
- Mechanisms described in the literature: immunomodulation through activation of Dectin-1 and TLR4 on macrophages (in vitro), antioxidant protection by melanin and polyphenols, bidirectional regulation of TNF-α and IL-1β.
- The strongest evidence is in vitro work, some of it Polish co-authored (Lemieszek 2011, UMCS Lublin + Institute of Rural Medicine). For Chaga there are not yet large clinical RCTs in humans.
- In TCM it tonifies Wei Qi (defensive energy), supports Kidney Yang and clears Heat from the Liver. Bitter, slightly sweet taste, cool to neutral nature. Meridians: Liver, Kidney, Spleen.
- Our raw material: a 10:1 fruiting-body extract, standardised to above 30% β-glucans, tested for heavy metals and pesticides.
What chaga is and where it comes from
Chaga is the common name for the mushroom Inonotus obliquus of the Hymenochaetaceae family. In Polish czerniak brzozy, regionally błyskoporek podkorowy, czyreń, czarcie oko, in Siberian czanga. It is a parasitic mushroom that attacks living trees, mainly birches, and develops inside for 10-20 years, forming on the outside a black, irregular growth that looks like a burnt crust.
Inside, beneath that crust, is an orange-rust coloured core. It is the core, not the crust, that holds the highest concentration of bioactive compounds. The black outer shell of Chaga is not burnt wood but concentrated melanin, which the mushroom produces to protect itself from UV radiation and microbes.
In Poland Chaga is a partially protected species and wild harvest is restricted. Aloha Fungi sources its raw material only from certified controlled-harvest regions (mainly Siberia and Eastern Europe), never from Polish forests.
Tradition of use
The earliest documented use goes back to the Khanty people (Western Siberia), who used Chaga for stomach and liver complaints. From Siberia, through Russia, the tradition spread to Poland and the Baltic countries by the 16th century. In Polish villages Chaga was used as a strengthening tea, a digestive aid and a coffee substitute in times of shortage.
Marta Kinga Lemieszek, in her 2011 work, describes Chaga as a traditional folk-medicine remedy in Russia, Poland and the Baltic countries, used for digestive and liver conditions. Modern research on Inonotus obliquus has partly Polish roots, including the team from UMCS in Lublin and the Institute of Rural Medicine.
Bioactive composition, what is in the extract
More than 200 bioactive compounds have been identified in Chaga. The main groups are polysaccharides, melanin, polyphenols and triterpenoids. Standardised in our extract to above 30% β-glucans.
β-glucans (1→3, 1→6 and 1→4), the main immunomodulatory agent, including heteropolysaccharides built from β-Glc, β-Xyl, α-Man and α-Rha (Wold et al. 2018).
Melanin, the pigment giving Chaga its black exterior. It is the same type of compound found in human skin and one of the strongest antioxidants in the mushroom.
Polyphenols, betulinic acid, styrylpyrone derivatives and phenolic acids account for part of the antioxidant action.
Triterpenoids: inotodiol, lanosterol, ergosterol and trametenolic acid. In addition, betulin and betulinic acid, which the mushroom accumulates from the host birch.
How chaga works: three mechanisms
Mechanism 1. β-glucans and immunomodulation
Chaga β-glucans bind to Dectin-1 and TLR4 receptors on macrophages and dendritic cells, triggering NF-κB and MAPK signalling cascades that modulate cytokine production (Sang et al. 2022, Shen et al. 2022).
A key observation from Shen et al. (2022) on RAW264.7 macrophage lines: Chaga extracts had a bidirectional effect. In the resting state (M0) they raised macrophage activity, while in the overactive state (M1, LPS-induced) they lowered production of IL-1β and TNF-α. This is regulatory rather than purely stimulatory action. Wold et al. (2018) identified specific polysaccharide fractions (IOE-WN) inducing NO production in macrophages and dendritic cells in vitro.
Mechanism 2. Antioxidant protection
Melanin shows strong free-radical scavenging in DPPH assays. Polyphenols, including betulinic acid and styrylpyrones, act synergistically. Chaga activates the Nrf2 transcription factor, which upregulates phase II detoxification enzymes: superoxide dismutase (SOD), catalase and glutathione-S-transferase (Glamočlija et al. 2015).
Mechanism 3. Regulation of inflammation
Bidirectional modulation of TNF-α, IL-1β and IL-6 (Shen et al. 2022) points to regulatory rather than classically anti-inflammatory action. In addition, inhibition of the NF-κB pathway in inflamed cells (Sang et al. 2022), modulation of prostaglandin and leukotriene production (2024 review) and a protective effect on the liver against oxidative stress (Fang et al. 2020) have been described.
What chaga does not do
Chaga does not cure cancers in humans. All available studies are in vitro and animal models, and a therapeutic claim is prohibited by regulation. Chaga does not „flush toxins"; only modulation of phase II detoxification enzymes through Nrf2 can be described. It does not replace immunosuppressive, hormonal, anticoagulant or oncological medicines. It also has no fast, noticeable effect like coffee or adrenaline. It is a tonifying mushroom; the first changes appear after 4-12 weeks of regular use.
How to take chaga: the protocol
Time and serving
Chaga works in the morning and before noon, up to about 2 pm. It is tonifying and strengthens Yang, so in the evening it may make it harder to fall asleep for sensitive people. Exception: sublingual drops (15-20 drops) can be taken with lunch.
For prevention, preferably in the morning: 1 g of extract a day as powder (1 teaspoon) or drops (30 drops), and in capsules the standard serving is 3. Intensively: 2-3 g of extract a day in two servings, morning and before noon. Do not exceed 4 g a day without individual recommendation.
With what and for how long
Chaga extract absorbs best 20-30 minutes before a meal, on a slightly empty stomach, with warm water, coffee or cacao. Hold sublingual drops under the tongue for 30-60 seconds, then swallow. If discomfort appears on an empty stomach, take it with a light meal. You can also add 1 teaspoon of powder to your morning coffee.
The classic rhythm is 5 days on, 2 days off (usually the weekend). The break maintains receptor responsiveness to β-glucans and triterpenes and limits adaptation. Prevention and everyday support: 8-12 weeks, then a 2-4 week break and a repeat cycle. Targeted protocol under a therapist: 12-16 weeks. Seasonal variant (autumn-winter): 4-8 weeks.
What to observe over time
Week 1-2: subtle effects, sometimes mild fatigue (in TCM a „cleansing reaction"). If it is strong, reduce the serving by half.
Week 3-6: steadier daytime energy, better stress tolerance, some people report changes in skin and digestion.
Week 8-12: a cumulative effect, greater resistance to infection, a steadier overall state. Individual variation is large.
What to combine chaga with: proven synergies
Chaga + Reishi: SHIELD day and night
Chaga in the morning (tonifying, strengthens Yang and Wei Qi), Reishi in the evening (calming, supports Yin). This gives 24-hour immune support without night-time stimulation. Duration: 8-12 weeks.
Pair with:Reishi
Chaga + Lion’s Mane: SHIELD and neuro
For people doing intensive mental work and exposed to oxidative stress. Lion’s Mane supports the NGF/BDNF neuronal growth factors. Chaga 1 g in the morning, Lion’s Mane 0.5-1 g in the morning or split between morning and afternoon. Duration: 12 weeks.
Pair with:Lion’s Mane
Chaga + Coriolus: deep immunomodulation
Coriolus contains the unique polysaccharide-peptides PSK and PSP. Chaga 1 g in the morning, Coriolus 1 g before noon. Broad support of immune function, an autumn-winter classic. Duration: 8 weeks, seasonally.
Pair with:Coriolus
Chaga + Cordyceps: immunity and energy
Immune support combined with daytime energy. Cordyceps 0.5-1 g in the morning on an empty stomach, Chaga 1 g in the morning or before noon. Both mushrooms are tonifying, so avoid them after 2 pm. Duration: 8-12 weeks.
Pair with:Cordyceps
Chaga + Tremella: SHIELD and skin
Chaga 1 g in the morning (antioxidant protection), Tremella 1 g in the evening with dinner (water-binding, support for the skin barrier). For people with atopic tendencies or an aggressive skincare regimen. Duration: 12 weeks.
Pair with:Tremella
Chaga in Traditional Chinese Medicine
In TCM Chaga tonifies Wei Qi (defensive energy), supports Kidney Yang, clears Heat from the Liver and moves Blood. In the OOTI model it is most often used in the Cleansing phase, where it supports the Liver and phase II detoxification through regulation of Nrf2 and glutathione-S-transferase, and in the Nourishment phase, where it strengthens Wei Qi and the recovery of cellular immunity, often combined with Reishi or Tremella.
Caution according to TCM with Spleen Yang deficiency (chronic diarrhoea, weak digestion, cold extremities), because Chaga’s cool nature burdens the Spleen in deep Yang deficiency, and also with Blood deficiency and in acute viral infections. This is a frame of cultural observation, not a medical diagnosis. Concepts such as Qi, Yang or meridian do not correspond one to one with Western anatomy or physiology.
| Taste | bitter (苦 kǔ), slightly sweet (甘 gān) |
| Nature | cool to neutral (微寒 wēi hán) |
| Meridians | Liver (肝), Kidney (腎), Spleen (脾) |
| Category | tonic of Wei Qi and Kidney Yang, clears Heat from the Liver |
Contraindications and interactions
Absolute contraindications
Pregnancy and breastfeeding (insufficient clinical safety data).
Active kidney stones or a history of oxalate calculi. This is a real, documented risk: Chaga contains relatively high oxalate levels, and long, intense use has been associated with acute kidney failure in predisposed individuals (Kikuchi et al. 2014, Clin Nephrol).
Active immunosuppressive treatment (after organ transplant, active autoimmune disease in flare), because Chaga modifies immune signalling through macrophage activation.
Requires consultation with a doctor
Anticoagulants (warfarin, acenocoumarol, NOAC): Chaga has anticoagulant activity, may potentiate the drug effect and increase bleeding risk.
Antidiabetic medicines: Chaga lowers blood glucose (animal studies), and combined with metformin or insulin it risks hypoglycaemia.
Antihypertensive medicines: possible potentiation of the blood-pressure-lowering effect.
Active autoimmune diseases (RA, lupus, Hashimoto’s in flare).
Planned surgery: stop at least 14 days before the procedure (anticoagulant activity).
Possible side effects and safe serving
Reported: mild gastrointestinal discomfort on an empty stomach (take with a light meal), a „cleansing reaction" in the first 5-7 days (fatigue, mild migraine, reduce the serving by half), rare allergic reactions (itching, rash, stop immediately). With long-term use, increased urinary oxalate excretion, so drink at least 2 L of water a day.
Up to 3 g of extract a day is well tolerated by healthy people. Above that requires therapist oversight. Do not exceed 4 g a day without a specific recommendation.
Evidence verdict
Honest about what is known
We also show what is not proven. This is a dietary supplement, not a medicine.
3
Strong evidence
confirmed composition
3
Preliminary
in vitro and animal studies
2
Not proven
no human studies
Reviewed by
Mateusz Rosa · Doctor of Acupuncture (WFAS)
Version 1.0 · Updated: 21 June 2026 · Subject-matter reviewer: Mateusz Rosa, founder of Aloha Fungi, international TCM therapist, Doctor of Acupuncture (WFAS), author.
Based on 10 verified sources
See sources ↓Strength of evidence: an honest qualification of claims
| Claim | Type of evidence | Strength |
|---|---|---|
| β-glucans activate Dectin-1 and TLR4 (immunomodulation) | in vitro (Wold 2018, Shen 2022), multiple independent studies | MOCNY |
| Bidirectional regulation of TNF-α and IL-1β on M0/M1 macrophages (regulatory, not stimulant) | in vitro (Shen 2022, RAW264.7 lines) | MOCNY |
| Antioxidant activity (DPPH, FRAP), melanin and polyphenols | in vitro (Glamočlija 2015), multiple independent studies | MOCNY |
| Hepatoprotective action | animal models (Fang 2020), no human RCT | WSTĘPNY |
| Support in atopic dermatitis (IgE and cytokine modulation) | mouse DNCB-AD model (Liu 2026), needs human replication | WSTĘPNY |
| Anti-fatigue action (liver glycogen, lactic acid) | exhaustion swim test in mice (Xiuhong 2015) | WSTĘPNY |
| „Cures" cancers in humans | none, only in vitro and animal models, claim prohibited by regulation | BRAK |
| „Flushes toxins" from the whole body | none, only modulation of phase II enzymes (Nrf2) can be discussed | BRAK |
MOCNY = solid evidence · WSTĘPNY = moderate or preliminary · BRAK = unsupported or prohibited by regulation.
Frequently asked questions
- What exactly is Chaga and where does it come from?
- Chaga (Inonotus obliquus, birch canker) is a parasitic mushroom living on birch trunks in cold and temperate climates. It occurs in Poland, Russia, the Baltic countries, Scandinavia, North Korea, Siberia, Canada and Alaska. Its traditional use is documented in Polish folk medicine since the 16th century.
- What is the difference between Chaga PRIME and LONGEVITY?
- PRIME is an 80% extract complex plus 20% powder for maximum potency in the OOTI Cleansing phase. LONGEVITY is a 50% 10:1 extract plus 50% powdered fruiting body for everyday, long-term protection in the Nourishment phase. Individual matching during a free consultation.
- After how long will I feel an effect?
- The first subtle effects usually after 2-4 weeks. The full effect after 8-12 weeks of regular use in a 5/2 rhythm. Chaga works at depth, not on the surface.
- Can Chaga be combined with Reishi, Lion’s Mane or Cordyceps?
- Yes. Popular stacks: Chaga + Reishi (SHIELD day and night), Chaga + Lion’s Mane (SHIELD and neuro), Chaga + Coriolus (deep immunomodulation), Chaga + Cordyceps (immunity and energy), Chaga + Tremella (SHIELD and skin).
- What are the main contraindications?
- Absolute: pregnancy, breastfeeding, active oxalate kidney stones, immunosuppressive medicines. Requires consultation: anticoagulants, antidiabetic medicines, blood-pressure-lowering medicines, active autoimmune diseases, before surgery (stop 14 days ahead).
- Can Chaga be drunk instead of coffee?
- It does not replace coffee in terms of stimulation, because Chaga contains no caffeine. Traditionally it is consumed as an infusion, slightly bitter and earthy-forest in taste. You can add 1 teaspoon of powder to your morning coffee.
- Does Chaga work on skin and hair?
- Preliminary studies suggest modulation of inflammatory markers in the skin. The antioxidant action of melanin (in vitro) suggests support for protecting skin cells, but cosmetic effects vary individually.
- Can I forage Chaga myself in Polish forests?
- We do not recommend it. Inonotus obliquus is on the list of partially protected species in Poland, and correct identification requires mycological experience.
- What is the 5 ON / 2 OFF rhythm?
- Five days of use, two days off. It helps avoid adaptation and keep the Dectin-1 and TLR4 receptors responsive.
- Why a fruiting-body extract rather than mycelium?
- The fruiting body contains a far higher concentration of bioactive compounds than mycelium grown on grain.
Scientific bibliography
- Lemieszek MK et al. (2011). Anticancer effects of fraction isolated from fruiting bodies of Chaga medicinal mushroom, Inonotus obliquus: in vitro studies. Int J Med Mushrooms 13(2):131-143. PMID: 22135889.
- Saar M (1991). Fungi in Khanty folk medicine. J Ethnopharmacol 31(2):175-179.
- Wold CW et al. (2018). Structural characterization of bioactive heteropolysaccharides from the medicinal fungus Inonotus obliquus (Chaga). Carbohydr Polym 185:27-40. PMID: 29421057.
- Shen S et al. (2022). In Vitro Immunomodulatory Effects of Inonotus obliquus Extracts on Resting M0 Macrophages and LPS-Induced M1 Macrophages. Evid Based Complement Alternat Med 2022:8251344. PMID: 35497923.
- Glamočlija J et al. (2015). Chemical characterization and biological activity of Chaga (Inonotus obliquus), a medicinal „mushroom". J Ethnopharmacol 162:323-332. PMID: 25576897.
- Sang R et al. (2022). Immunomodulatory effects of Inonotus obliquus polysaccharide on splenic lymphocytes infected with Toxoplasma gondii via NF-κB and MAPKs pathways. Front Cell Infect Microbiol.
- Fang J et al. (2020). Extracts of Phellinus linteus, Bamboo Leaf and Chaga Mushroom (Inonotus obliquus) Exhibit Antitumor Activity through Activating Innate Immunity. Nutrients 12(8):2279.
- Liu J et al. (2026). Chaga Mushroom (Inonotus obliquus) Attenuates DNCB-Induced Atopic Dermatitis by Modulating Oxidative Stress and Cytokine Expression. J Microbiol Biotechnol.
- Kikuchi Y et al. (2014). Chaga mushroom-induced oxalate nephropathy. Clin Nephrol 81(6):440-444.
- Xiuhong J et al. (2015). Effects of Inonotus obliquus polysaccharides on anti-fatigue activity in mice.
The educational content on this page does not replace medical advice. A dietary supplement is not a medicine and should not replace a varied diet or medical consultation. Before starting supplementation, especially with chronic conditions, pregnancy, breastfeeding or when taking medication, consult your doctor. All cited studies come from peer-reviewed scientific journals (DOI and PMID in the bibliography). Aloha Fungi does not claim therapeutic efficacy for any product; the mechanisms described are based on the current state of the literature. All products are dietary supplements notified to the Polish Chief Sanitary Inspectorate (GIS).