Guide
How much chaga mushroom should you take a day?
No human trial has set a chaga mushroom dose, so no evidence-based amount exists. Our label directs two capsules a day, 1,000 mg of mycelium powder. Large intakes of chaga powder, 10-15 g a day, were followed by kidney damage in one case report.
There is no evidence-based dose of chaga mushroom, because no human trial of chaga at any dose has been published that we could find. Our label directs two capsules once a day, which is 1,000 mg of chaga mycelium powder standardized to 40% polysaccharides (400 mg). It is a label amount, not a trial-tested one.
What the research says about dose
Nothing, in the sense that matters. A PubMed search on 2 October 2026 for Inonotus obliquus with the clinical-trial publication type returned no records, and a 2020 review describes the research as mostly cell and animal work that still needs studies meeting evidence-based medicine criteria. Without a human trial, nobody can say what amount of chaga does anything, or what amount is the "right" one. Numbers you see on the web come from marketing, tradition or lab concentrations, not from a trial of people.
How much chaga mushroom is too much?
The only human data on large intakes are two case reports, and both concern kidney damage:
- 2022: a 69-year-old man took 10-15 g a day of chaga mushroom powder, plus 500 mg a day of vitamin C, for about 3 months. He developed acute kidney injury, and a biopsy showed calcium oxalate crystals. His kidney function recovered about a month after treatment began.
- 2020: a 49-year-old man took chaga powder for years and reached end-stage kidney disease with oxalate deposits. His daily gram dose is not stated, so we cannot turn it into a multiple of anything; the leftover powder was assayed as extremely high in oxalate.
These are single cases. They do not define a safe ceiling or show how common the problem is, and neither report names the powder as mycelium. For scale, 10-15 g is ten to fifteen times a 1,000 mg serving. We would not read that as "1,000 mg is safe"; we don't know the oxalate content of our mycelium powder.
What our label provides
| Per | Chaga mycelium powder | Stated polysaccharides |
|---|---|---|
| 1 capsule | 500 mg | 200 mg |
| Serving (2 capsules, once a day) | 1,000 mg | 400 mg (40%) |
That is 30 servings a bottle, as low as $19.19 a bottle on subscription. The label does not say how the polysaccharides were measured, and it prints no beta-glucan, triterpenoid or oxalate figure. The powder is mycelium, not the conk that most chaga research describes, so even a trial of conk at 1,000 mg would not be a trial of this product.
Questions people ask
How much chaga mushroom per day?
Our label says two capsules once a day, or as directed by a healthcare professional. That is a label direction; no trial has tested it or any other amount.
How much chaga mushroom powder per day, or per cup of tea?
We have no trial-based figure for powder or tea. The kidney case reports describe 10-15 g of powder a day in one case and unstated amounts in the other, so more is not a safe assumption.
Is more better?
No evidence says so. The only human data on high intakes are harm reports.
How much chaga mushroom for dogs?
We found no study and give no dose. Ask a veterinarian.
Should I take more with vitamin C?
No. The 2022 case report involved chaga powder together with 500 mg a day of vitamin C, and the report does not separate the two. If you take high-dose vitamin C, ask a doctor before adding chaga.
Who should not take it at all?
See who should not take chaga mushroom. Our label tells people with kidney problems or kidney stones to ask a physician before use.
Timing is in when to take chaga mushroom; side effects are in chaga mushroom side effects.
Sources
- Chaga mushroom-induced oxalate nephropathy that clinically manifested as nephrotic syndrome: A case report A 69-year-old man taking 10-15 g a day of chaga powder plus vitamin C for 3 months developed acute kidney injury with oxalate crystals; he recovered with treatment.
- Development of End Stage Renal Disease after Long-Term Ingestion of Chaga Mushroom: Case Report and Review of Literature A 49-year-old man who took chaga powder for years ended up with end-stage kidney disease and oxalate deposits; the leftover powder was very high in oxalate.
- Inonotus obliquus - from folk medicine to clinical use A 2020 review of chaga research says the evidence is mostly cell and animal work and that properly designed human studies are still needed.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
