Mushroom
Chaga (Inonotus obliquus)
Also known as: Birch fungus, Inonotus obliquus, King of mushrooms
Antioxidant-rich fungus from birch trees with immune-modulating and anti-inflammatory properties.
Last reviewed June 2026 · Evidence graded from peer-reviewed research, not editorial opinion. Educational only — not medical advice.
Every Chaga (Inonotus obliquus) product we have scored
| # | Product | Score | Per serving |
|---|---|---|---|
| 1 | Complement Restore | 86 A- | $1.90 |
| 2 | Terra Origin Healthy Mushroom Capsules | 83 A- | $1.00 |
| 3 | Thorne Daily Greens Plus | 79 B+ | $0.83 |
| 4 | Micro Ingredients Organic Mega 10 mushroom Powder | 66 B- | $0.14 |
Scored on dose accuracy, form, label transparency and third-party testing. Per-serving cost is list price divided by servings per container. No brand pays to be listed or ranked.
Common questions
How much Chaga (Inonotus obliquus) should I take?
The typical range is 1-3g extract or 2-6g powder daily. Long-term use traditional
When should I take Chaga (Inonotus obliquus)?
Morning or afternoon. Either way.
Which form of Chaga (Inonotus obliquus) is best?
Hot water extract — Traditional, extracts beta-glucans. Other forms in the catalog: Dual extract, Chunks for tea, Powder.
Is Chaga (Inonotus obliquus) safe?
Commonly reported: Rare, well tolerated. Serious warnings: High oxalate content - kidney stone risk with very high doses, May lower blood sugar. High oxalates - kidney concern with excessive use
Which Chaga (Inonotus obliquus) supplement scores highest?
Complement Restore, at 86/100. Scored on dose accuracy, form, label transparency and third-party testing — no brand pays to be listed or ranked.
Primary uses
- Antioxidant
- Immune support
- Anti-inflammatory
- Gut health
How it works
- Extremely high antioxidant content (ORAC)
- Beta-glucans modulate immunity
- Betulinic acid from birch host
- Supports gut microbiome
Dosage
- Typical range
- 1-3g extract or 2-6g powder daily
- Timing
- Morning or afternoon
- With food
- Either way
- Duration
- Long-term use traditional
- Special populations
- Those seeking antioxidant and immune support
Forms
- Hot water extract
- Dual extract
- Chunks for tea
- Powder
Safety
Common side effects
- Rare, well tolerated
Contraindications
- Kidney disease
- Oxalate kidney stones
- Bleeding disorders
Products containing Chaga (Inonotus obliquus)
Top-scoring supplements in our catalog that list Chaga (Inonotus obliquus) on the label. Each product is graded on Formulate's ingredient-level rubric — dose accuracy, form, transparency, and third-party testing.
Evidence notes
Traditional use with emerging research
Grade B: Some human trials support key claims; further confirmation needed.
Related in Mushroom
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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.