Chaga Mushroom (Inonotus obliquus)

Reviewed by the HeyPsych Medical Review Board

Board-certified psychiatrists and mental health professionals

Published August 17, 2025•Updated February 20, 2026•Reviewed February 20, 2026

Indications

Primary Indications

Stress adaptationFatigueImmune support

Mechanism

Chaga mushroom is rich in antioxidants such as melanin, betulinic acid, and polyphenols. These compounds help reduce oxidative stress and modulate inflammatory signaling pathways. Chaga also appears to influence immune cell activity, potentially balancing Th1/Th2 immune responses. Its adaptogenic properties may support stress resilience through HPA-axis modulation.

Dosing

Adult Dosing

note: Standardized extracts (containing ≥10% polysaccharides) are preferred in supplements.

typical: 200–1200 mg/day of extract; or brewed as tea (2–5 g dried chaga chunks)

Dosage Forms

Powder
Capsules
Tea
Tincture

Onset Duration

Onset: Weeks. Duration: Benefits maintained with consistent use.

Adverse Effects

Common Side Effects

• Gastrointestinal upset

• Diarrhea

⚠️ Serious Side Effects

Kidney stones (due to oxalates)
Immune overstimulation in autoimmune conditions

Warnings

Critical Safety Information

→Avoid in uncontrolled autoimmune disorders.
→Caution in chronic kidney disease due to oxalate load.

Interactions

With: Anticoagulants (e.g., warfarin)

Risk: May increase bleeding risk

Action: Monitor closely

With: Immunosuppressants

Risk: May reduce efficacy

Action: Avoid combination

Monitoring

Kidney health
Autoimmune symptoms
Bleeding risk if on anticoagulants

Special Populations

👶Pregnancy

Insufficient data; avoid use

🤱Breastfeeding

Unknown safety; avoid use

👧Children & Adolescents (Under 18)

Not recommended

👴Older Adults (65+)

Generally safe if kidney function is normal

Tapering

Not required; no withdrawal symptoms expected.

Clinical Notes

High in antioxidants, often marketed as 'anti-aging'.
Traditional Siberian medicine regarded it as a general vitality tonic.
Animal models suggest possible antidepressant-like effects via anti-inflammatory pathways.

This treatment information is for educational purposes only. Treatment decisions should be made in consultation with qualified healthcare professionals based on individual circumstances, symptoms, and medical history. Do not attempt treatment without professional guidance.

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