Chaga (Inonotus obliquus)
The 'king of mushrooms' in Russian and Siberian folk medicine. Highest antioxidant load of any mushroom and a long traditional use for immune and gut health.
Strong traditional use (multi-century Russian / Siberian / Nordic folk medicine). Modern human evidence is limited — most data is preclinical (cell culture, animal models showing antioxidant and immune effects). Effects: 4–12 weeks (subjective).
Chaga is a sterile conk that grows on birch trees in cold northern climates — Siberia, Scandinavia, Canada, Northern US. It looks more like burnt charcoal than a mushroom. Its dark colour comes from melanin and a high concentration of polyphenols and betulinic acid (absorbed from birch bark). Traditional uses include immune support, GI health, and as a 'longevity tonic.' Modern interest is mostly in its antioxidant profile (one of the highest ORAC values of any food) and modest immune modulation. The evidence base is mostly preclinical — human trials are limited.
- Form
- Dual-extract from wild-harvested chaga — best preserves the polyphenols and the betulinic acid. Chaga tea is the traditional form. Avoid mycelium-on-grain (chaga is hard to cultivate; most powders are wild-harvested conks).
- Dose
- 500–3,000 mg/day of extract. Traditional tea: 1–3 cups daily.
- Timing
- Anytime, with or without food. AM common.
- Schedule
- Daily. Periodic breaks optional.
- Side effects
- Generally well-tolerated. Rare bleeding (mild antiplatelet effect). Theoretical kidney stone risk at very high doses (high oxalate content).
- Interactions
- Anticoagulants and antiplatelets — mild additive blood-thinning. Diabetes medications (modest glucose effects). Immunosuppressants (immune modulation).
- Contraindications
- Bleeding disorders. Pre-surgery (stop 1–2 weeks before). History of oxalate kidney stones (chaga is high in oxalates). Pregnancy / lactation.
- Lab markers
- Not standard.
- Food sources
- Chaga itself — usually consumed as tea brewed from chunks of the conk. Hard to find as a casual ingredient outside specialty shops.
Pairs with
Other mushrooms (lion's mane, reishi, cordyceps, turkey tail — synergistic in mushroom stacks). Vitamin C, glutathione (antioxidant network).
within Mushrooms