Last verified: 17 days ago
Chaga Mushroom
Also known as: Inonotus obliquus, Chaga, Birch mushroom, Cinder conk
Evidence under review. — Not yet rated
Medicinal mushroom with antioxidant and anti-inflammatory properties, but human clinical evidence is nearly absent.
-
What it does
Chaga mushroom is a parasitic fungus that grows on birch trees and has been used in folk medicine for centuries. Lab and animal studies suggest it contains compounds — including inotodiol and...
-
Evidence quality
Evidence base hasn't been formally rated yet. See research below.
-
Clinical dose
No established dose
What the Science Says
Chaga mushroom is a parasitic fungus that grows on birch trees and has been used in folk medicine for centuries. Lab and animal studies suggest it contains compounds — including inotodiol and polyphenols — that may reduce inflammation, scavenge free radicals, and modulate immune responses. One animal study found it reduced SARS-CoV-2 viral load in mice, and cell studies show anti-inflammatory effects in skin tissue, but no robust human clinical trials have confirmed these benefits.
What It Doesn't Do
Not proven to treat or prevent cancer in humans — cancer studies are lab-only. No human evidence it fights COVID-19 or other viruses. Not a proven immune booster in people. Don't expect detox benefits — that's marketing, not science.
Evidence-Based Benefits
Inotodiol, a compound in Chaga, reduces inflammatory cytokines in human skin cell studies.
Weak EvidenceEffective at: No established dose
Supporting studies (click to view on PubMed):
Chaga extracts show strong free radical scavenging activity in lab tests.
Weak EvidenceEffective at: No established 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 mg/kg body weight in rats
Supporting studies (click to view on PubMed):
Absorption & Bioavailability
Unknown — inotodiol (a key active compound) has poor solubility and low oral bioavailability; a microemulsion formulation improved absorption in animal pharmacokinetic testing, but human data is lacking
Red Flags to Watch For
- High oxalate content: animal studies show high-dose Chaga can cause kidney damage due to oxalate accumulation — especially risky for people prone to kidney stones
- No established safe human dose — most evidence comes from animal or cell studies, not clinical trials
- Widely marketed for cancer and immune benefits that have zero human clinical trial support
- Over 1,000 supplement products registered despite only 1 human clinical trial indexed on PubMed
Products Containing Chaga Mushroom
See how Chaga Mushroom is used in these analyzed products:
Host Defense Mushroom Powders
Supplement
Everyday Dose Mushroom Coffee+ Single Packet
Supplement
310 Chocolate Icing Shake
Supplement
Anima Mundi Adaptogenic Powder
Supplement
Shiruto Supplement
Supplement
Beekeeper's Naturals (Multiple Products)
Supplement
CBD Dog Health - Pet CBD Product Line
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 Mushroom do?
Medicinal mushroom with antioxidant and anti-inflammatory properties, but human clinical evidence is nearly absent.
What is the effective dose of Chaga Mushroom?
No established dose
Is Chaga Mushroom safe?
High oxalate content: animal studies show high-dose Chaga can cause kidney damage due to oxalate accumulation — especially risky for people prone to kidney stones
What doesn't Chaga Mushroom do?
Not proven to treat or prevent cancer in humans — cancer studies are lab-only.
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