Last verified: 17 days ago
Chaga
Also known as: Inonotus obliquus, Chaga mushroom, birch mushroom, cinder conk
Evidence under review. — Not yet rated
Traditional fungus with antioxidant and anti-inflammatory activity in lab studies, but no proven human benefits yet.
-
What it does
Chaga is a parasitic fungus that grows on birch trees, long used in Russian folk medicine. Lab and animal studies suggest its extracts may have antioxidant, anti-inflammatory, and...
-
Evidence quality
Evidence base hasn't been formally rated yet. See research below.
-
Clinical dose
No established dose
What the Science Says
Chaga is a parasitic fungus that grows on birch trees, long used in Russian folk medicine. Lab and animal studies suggest its extracts may have antioxidant, anti-inflammatory, and immune-modulating properties, driven by compounds like beta-glucans, triterpenoids, and phenolics. No human clinical trials from the provided research confirm these effects translate to real-world health benefits.
What It Doesn't Do
Not proven to treat cancer in humans — lab results don't equal a cure. No solid evidence it boosts immunity in people. Not a proven heart health supplement. Don't assume 'natural' means safe at high doses.
Evidence-Based Benefits
Compounds in Chaga suppress inflammatory cytokines in lab cell studies.
Weak EvidenceEffective at: No established human dose
Supporting studies (click to view on PubMed):
High-dose Chaga causes kidney damage in rats due to its high oxalate content.
Weak EvidenceEffective at: Harmful at 3,844.8 mg/kg body weight in rats
Supporting studies (click to view on PubMed):
Chaga extract reduced heart injury markers in rats exposed to extreme cold stress.
Weak EvidenceEffective at: 300–600 mg/kg in rats
Supporting studies (click to view on PubMed):
Absorption & Bioavailability
Unknown — no human pharmacokinetic data in the provided studies
Red Flags to Watch For
- High oxalate content: animal studies show high-dose Chaga can cause kidney damage and oxalate-induced kidney injury
- Reported cases of renal failure linked to Chaga consumption in humans, flagged in social media health research
- Only one clinical trial indexed among 10 papers — the vast majority of evidence is animal or cell-based
- Natural product variability: constituent levels differ between batches, making consistent dosing unreliable
Products Containing Chaga
See how Chaga is used in these analyzed products:
Host Defense Mushroom Powders
Supplement
Best Earth Naturals Vegan Mushroom Complex
Supplement
Zena Nutrition Organic Super Greens Powder
Supplement
Everyday Dose Mushroom Coffee+ Single Packet
Supplement
310 Chocolate Icing Shake
Supplement
Host Defense MycoShield Throat Spray
Supplement
Elm & Rye Vegan Protein Blend
Supplement
Anima Mundi Adaptogenic Powder
Supplement
Shiruto Supplement
Supplement
Beekeeper's Naturals (Multiple Products)
Supplement
Country Farms Collagen + Greens Powder
Supplement
Double Wood Supplements Collagen Peptides Powder
Supplement
CBD Dog Health - Pet CBD Product Line
Supplement
Host Defense Mushrooms
Supplement
Everyday Dose Medium Roast Functional Coffee
Supplement
310 Organic Vanilla Shake
Supplement
Everyday Dose Medium Roast Instant Coffee+
Supplement
Everyday Dose
Supplement
Frequently Asked Questions
What does Chaga do?
Traditional fungus with antioxidant and anti-inflammatory activity in lab studies, but no proven human benefits yet.
What is the effective dose of Chaga?
No established dose
Is Chaga safe?
High oxalate content: animal studies show high-dose Chaga can cause kidney damage and oxalate-induced kidney injury
What doesn't Chaga do?
Not proven to treat cancer in humans — lab results don't equal a cure.
Research Sources
- PubMed
- NIH DSLD
This information is for educational purposes only and is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Last updated: 2026-05-25