Herbal Extract
Chaga Mushroom (Inonotus obliquus)
Also known as: Inonotus obliquus, Chaga, Birch Fungus, Chaga Extract
Chaga is a fungal growth on birch trees traditionally used in Scandinavian and Russian medicine, containing bioactive compounds like polysaccharides and betulinic acid. Limited human clinical evidence exists for most claimed benefits, with most research conducted in vitro or in animal models.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Primary uses
- Immune system support
- Antioxidant support
- General wellness
How it works
- Polysaccharide-mediated immune modulation
- Antioxidant activity via melanin and phenolic compounds
- Potential anti-inflammatory effects
Dosage
- Typical range
- 1-3 grams daily (powder) or 250-500 mg extract
- Timing
- Can be taken any time; often mixed into beverages
- With food
- May be taken with or without food; some evidence suggests taking with food may improve absorption
- Duration
- Traditionally used long-term; optimal duration for modern use unclear due to limited human studies
- Special populations
- Pregnant/nursing women should consult healthcare provider; may interact with immunosuppressant medications
Forms
- Powder· 70/100
- Extract· 70/100
- Capsule· 70/100
- Tea· 70/100
Safety
Common side effects
- Generally well-tolerated
- Rare: digestive upset
- Rare: allergic reactions in sensitive individuals
Contraindications
- Immunosuppressant therapy (potential immune stimulation may interfere)
- Known allergy to fungi or birch pollen
- Pregnancy and lactation (insufficient safety data)
Products containing Chaga Mushroom (Inonotus obliquus)
Top-scoring supplements in our catalog that list Chaga Mushroom (Inonotus obliquus) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
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Evidence notes
Most evidence is in vitro or animal-based; human RCTs are limited and small. Traditional use is well-established but does not substitute for clinical evidence. Grade reflects preliminary scientific support for immune and antioxidant claims.
Grade C: Mostly observational or small trials; mechanism is plausible but unproven at scale.
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Medical disclaimer. This page is educational and does not replace advice from a qualified healthcare provider. Individual needs and risks vary — consult a professional before starting, stopping, or combining supplements, especially if you are pregnant or nursing, taking medication, or managing a health condition.