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Dietary supplement

Forager's Quest Chaga Ingredients & Drug Interactions

by SurThrival

Forager's Quest Chaga label
See full label image
Liquid Category: Non-nutrient/non-botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Forager's Quest Chaga against your medications. The heart of this page is the interaction checker and the full interaction report — how this product’s ingredients may interact with prescription and over-the-counter medicines you may be taking.

Around that, we add a pharmacist’s high-level view of the product as a whole — what’s inside, the evidence for its stated use, how transparent the label is, and what safety data exists — so you can see the full picture in one place. It’s educational information from our licensed clinical databases and the clinical staff at HelloPharmacist — not medical advice — and we don’t sell or endorse products. Our editorial policy

The interaction bottom line Most serious interaction: Moderate

Forager's Quest Chaga is a dietary supplement by SurThrival with 1 active ingredient. Its ingredients are commonly taken for immune support, antioxidant support, general wellness/tonic.Based on those ingredients, 327 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Chaga Mushroom. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Forager's Quest Chaga by SurThrival

Ask about any prescription or over-the-counter medication and we check it for interactions with Forager's Quest Chaga by SurThrival — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
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HelloPharmacist Scorecard of Forager's Quest Chaga by SurThrival

Our pharmacy team’s full take, with four database checks built into the cards below — a summary of what is known, not a grade of the product itself.

From our pharmacy team — supplement deep dive

Generated from HelloPharmacist’s pharmacist-curated databases and editorial rules · Last generated Jul 11, 2026

What’s inside

Full disclosure
Ingredient Transparency · database check
Full

Every active ingredient lists its own amount on the label.

Why this rating?
  • The label discloses an exact amount for 1 of its 1 active ingredient.
  • No proprietary blends here — you can verify the dose of every single component.

This product contains one active ingredient: chaga mushroom, a fungus that grows on birch trees in cold climates. The chaga is delivered as a liquid extract using deionized water and organic grain alcohol as solvents, with organic maple syrup and organic vanilla bean extract for flavor.

It's ready to use straight from the bottle.

Does it work?

Couldn't assess
Evidence for Intended Use · database check
By FDA rules, dietary supplements can’t claim to treat, cure, or prevent disease — so labels speak in careful marketing language. We discern each product’s intended use from its name, label claims, and label statements, then grade the clinical evidence for that use. How these ratings are computed
Not assessable

We hold no graded evidence for this product's ingredients for its stated purpose.

Why this rating?
  • The label markets this product for: immune support and antioxidant health.
  • We looked for evidence on: immune function, antioxidant activity, inflammation.
  • Our graded evidence for these ingredients doesn't cover that particular purpose.

The evidence isn't established in our data for chaga's effectiveness. We hold insufficient reliable evidence to rate it for cardiovascular disease, diabetes, or COVID-19.

That doesn't mean it doesn't work — it means well-designed human studies haven't confirmed a benefit yet. If you're considering chaga for a specific health concern, ask your pharmacist what the current research shows.

The evidence, ingredient by ingredient Chaga

How safe is it?

Well-documented data
Safety Information · database check
Well characterized

Adverse-effect, pregnancy, and general safety data are on file for most of these ingredients.

Why this rating?
  • We hold adverse-effect (side-effect) data for 1 of the 1 matched ingredient.
  • Pregnancy & breastfeeding safety ratings cover 1 of 1.
  • General safety write-ups exist for 1 of 1.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Chaga is generally well tolerated when used in foods and teas, but human safety data are limited. There have been rare reports of kidney problems linked to excessive chaga use — specifically two cases of kidney failure and one case of acute kidney injury — because chaga contains high concentrations of oxalate, a compound that can build up in your kidneys.

The safety information for pregnancy and breastfeeding isn't sufficient to know either way, so it's best to avoid this product during pregnancy and while breastfeeding unless you've discussed it with your doctor or pharmacist.

Side effects, ingredient by ingredient Chaga

Meds to double-check

Moderate interaction found
Known Interaction Concern · database check
Moderate identified

The most serious documented interaction for these ingredients is Moderate. Check your medications for a personalized result.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Chaga.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; immunosuppressants / transplant drugs; diabetes medications.
  • For scale: 327 individual medications appear in the full list. A big number alone doesn't make a product dangerous — what matters is whether YOUR medication is on it, so run yours through the interaction checker on this page.

Check with us before taking this product if you use blood thinners or antiplatelet drugs (like warfarin or aspirin), immunosuppressants (especially after a transplant), or diabetes medications — chaga may theoretically affect how all three work. Use the interaction search below to verify your specific medications.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

Chaga is a traditional mushroom extract with limited human research behind it. If you take blood thinners, diabetes medications, or drugs that suppress your immune system, you'll want to check with us before adding this in.

Pregnant or nursing? Skip it for now.

For everyone else, it's generally well tolerated, but talk with your pharmacist about whether it makes sense for you.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 1 active ingredient matched to our full ingredient reviews (monographs). Based on the product label dated Feb 25, 2021.

This Scorecard evaluates available label information, ingredient evidence, and known medication-safety considerations. It does not independently verify product identity, purity, potency, contamination, or manufacturing quality. How these ratings are computed

At a glance

General information

Key facts about Forager's Quest Chaga, straight from the product label.

Brand SurThrival
Barcode (UPC) 628586189249
Net contents 1.69 Fluid Ounce(s); 50 mL
Market status On market
Date entered into DSLD Feb 25, 2021
DSLD ID 243917
Product type Non-nutrient/non-botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
From the label
Everything in this section is reproduced from the manufacturer’s own product label — it’s the label speaking, not HelloPharmacist. We show it so you can see exactly what the maker states; we don’t verify or endorse those statements.

Supplement Facts

The label details for Forager's Quest Chaga by SurThrival, sourced from the NIH Dietary Supplement Label Database.

Supplement Facts

Daily Value (DV) Target Group(s):
Adults and children 4 or more years of age
Minimum serving Sizes:
1 mL
Maximum serving Sizes:
1 mL
Servings per container
50
UPC/BARCODE
628586189249
IngredientAmount% DV
Chaga Mushroom333 mg--

Other ingredients: deionized Water, organic Grain Alcohol, organic Maple syrup, organic Vanilla bean extract

Tap any ingredient to jump to its full detail below.

Label statements
These statements are the manufacturer’s wording, reproduced from the product label — the label is saying it, not HelloPharmacist. We don’t verify or endorse them.
Formula

Dual-extracted mushroom elixir The formula you're holding is unparalleled in quality and composition. Our unique dual-extraction of wild foraged chaga is extracted with hot water for immune-modulating beta-glucans and in organic ethanol for adaptogenic terpenes.

Wild-foraged chaga Smooth, delicious vanilla flavor

Mushroom elixir

Formulation

Known to have powerful antioxidant properties Immune supporting Extracted in organic ethanol and hot water

1:3 dual-extraction

General Statements

Thriving through all circumstances

FDA Disclaimer Statement

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, or prevent disease.

FDA Statement of Identity

Herbal Supplement

Suggested/Recommended/Usage/Directions

Usage: Take 30 drops and hold in mouth for 90 seconds then swallow.

Precautions

Warning: If you are pregnant or lactating, consult a health care practitioner before using.

Keep out of reach of children.

Is this label outdated? Report a formula or label change and our pharmacy team will review it.

See for yourself

Forager's Quest Chaga by SurThrival label

The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.

Forager's Quest Chaga label

Label images are published by the NIH Dietary Supplement Label Database for the version of this product on file. Always read your actual product label.

View the full label (PDF)
What’s inside

The Ingredients in Forager's Quest Chaga by SurThrival

This is the 1 active ingredient this product is made of. Select it to open its full monograph.

Serving size1 mL Dosage formLiquid Servings per container50 Amounts shown are per serving.

Chaga Mushroom

Interacts with
327 drugs
333 mg per serving

Chaga is a fungus that grows mostly on birch trees and is used as a tea or supplement, mainly for immune and antioxidant support. Human evidence for i...

Chaga Mushroom monograph & interactions

Other (inactive) ingredients: Deionized Water, Organic Grain Alcohol, Organic Maple syrup, Organic Vanilla bean extract. These complete the product’s ingredient list but are not active constituents.

Interaction report

Forager's Quest Chaga by SurThrival Drug Interactions

Want to check YOUR meds against Forager's Quest Chaga?

Ask about interactions with your drugs in plain English — “Can I take it with lisinopril?” — and we find you the answer in seconds, ingredient by ingredient.

 Go to the checker
327Drugs
327 Moderate

Ingredients driving the most interactions

Chaga Mushroom 327

Individual Drug Interactions

The ingredients in Forager's Quest Chaga interact with 327 drugs. Click any drug to see the details.

1 of the 1 ingredient in Forager's Quest Chaga interact with drugs. Each result below shows which ingredient is responsible. Chaga Mushroom

Each ingredient & the kinds of drugs it affects

For each ingredient in Forager's Quest Chaga with known interactions, here are the types of medications it can affect. Open any type for the detail — or search your exact drug in the checker above.

Chaga Mushroom3 drug types · 327 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, chaga may increase the risk of bleeding if used with anticoagulant or antiplatelet drugs.
In vitro and animal research suggests that chaga extract can inhibit platelet aggregation. This effect has not been reported in humans.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, taking chaga with antidiabetes drugs might increase the risk of hypoglycemia.
Animal research suggests that chaga might decrease blood glucose levels and increase insulin levels. This has not been reported in humans.

Likelihood Possible Evidence D
Immunosuppressants

Theoretically, chaga might interfere with immunosuppressive therapy.
In vitro research suggests that certain constituents of chaga stimulate immune function. This has not been reported in humans.

Likelihood Possible Evidence D
Chaga Mushroom full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Forager's Quest Chaga, from the product label.

SurThrival

See all SurThrival products
Name
SurThrival LLC
Street Address
P.O. Box 614
City
York
State
ME
ZipCode
03909
Phone Number
877.439.7996
Web Address
surthrival.com
Pharmacist Counseling Corner

Forager's Quest Chaga by SurThrival: Common Questions

Does Forager's Quest Chaga by SurThrival interact with any medications?
Yes. Based on its ingredients, Forager's Quest Chaga has a known interaction with 327 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Forager's Quest Chaga contains a single active ingredient, and that one ingredient can interact with many different medications on its own. We check it against each medication and show the mechanism responsible.
Where does this information come from?
The product label data comes from the NIH Dietary Supplement Label Database (DSLD); the interaction data is built on the Natural Medicines database and reviewed by HelloPharmacist pharmacists.
Can I take this if I'm pregnant or breastfeeding?
There isn't enough safety information to know either way, so it's best to avoid chaga during pregnancy and while breastfeeding. Talk with your doctor or pharmacist for personalized advice.
What are the side effects?
Chaga is generally well tolerated in foods and teas. The main concern from reported cases is kidney problems tied to very high doses — we've seen two cases of kidney failure and one case of acute kidney injury, likely from oxalate buildup. If you have kidney disease or a history of kidney stones, mention that to your pharmacist.
Does this product actually work?
We don't have enough reliable human evidence yet to confirm that chaga works for cardiovascular health, diabetes, or COVID-19. It's been used traditionally for centuries, but modern research hasn't caught up. If you're taking it for a specific reason, your pharmacist can fill you in on what research does exist.
What exactly is chaga?
Chaga is a fungus that grows on birch trees in cold climates. This product is a liquid extract of that mushroom, mixed with water, grain alcohol, maple syrup, and vanilla for taste.
Is this safe to take long-term?
Human safety data are limited, so we don't know much about long-term use. The rare kidney problems reported were tied to excessive doses with high oxalate content. If you're thinking about taking this regularly, check in with your pharmacist first.

Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy

Not sure if Forager's Quest Chaga is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

Label information is sourced from the NIH Dietary Supplement Label Database and reflects the product version on file; always read your actual product label. This page is for education only and is not a substitute for professional medical advice. Confirm with your pharmacist or doctor before combining supplements and medications.

Forager's Quest Chaga label
Go deeper

The Full Monographs Behind Forager's Quest Chaga’s Ingredients

Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.

Herb & supplement monograph

Chaga

Interacts with 327 drugs

Chaga is a fungus that grows mostly on birch trees and is used as a tea or supplement, mainly for immune and antioxidant support. Human evidence for its benefits is very limited, and it may...

Read the full Chaga monograph →
Sources

Sources & How We Checked

Forager's Quest Chaga's label data comes from the NIH Dietary Supplement Label Database; the ingredient interaction data is from the Natural Medicines database, reviewed by our pharmacists.

Content is written and reviewed by licensed HelloPharmacist pharmacists. See our data sources and editorial standards for how this information is built and checked.

The 9 references behind this product’s interaction data

Every citation that drives the interaction findings for this product’s ingredients, from the evidence-graded Natural Medicines (TRC Healthcare) database. Open an ingredient to browse its citations — links open the study on PubMed or the publisher’s site.

Chaga 9 references
  1. Sun JE, Ao ZH, Lu ZM, et al. Antihyperglycemic and antilipidperoxidative effects of dry matter of culture broth of Inonotus obliquus in submerged culture on normal and alloxan-diabetes mice. J Ethnopharmacol 2008;118(1):7-13. PubMed
  2. Hyun KW, Jeong SC, Lee DH, et al. Isolation and characterization of a novel platelet aggregation inhibitory peptide from the medicinal mushroom, Inonotus obliquus. Peptides 2006;27(6):1173-8. PubMed
  3. Kim YO, Han SB, Lee HW, et al. Immuno-stimulating effect of the endo-polysaccharide produced by submerged culture of Inonotus obliquus. Life Sci 2005;77(19):2438-56. PubMed
  4. Kikuchi Y, Seta K, Ogawa Y, et al. Chaga mushroom-induced oxalate nephropathy. Clin Nephrol 2014;81(6):440-4. PubMed
  5. Lee S, Lee HY, Park Y, et al. Development of end stage renal disease after long-term ingestion of chaga mushroom: case report and review of literature. J Korean Med Sci. 2020;35(19):e122.
  6. Kwon O, Kim Y, Paek JH, et al. Chaga mushroom-induced oxalate nephropathy that clinically manifested as nephrotic syndrome: A case report. Medicine (Baltimore) 2022;101(10):e28997. PubMed
  7. Su L, Xin C, Yang J, et al. A polysaccharide from Inonotus obliquus ameliorates intestinal barrier dysfunction in mice with type 2 diabetes mellitus. Int J Biol Macromol 2022;214:312-323. PubMed
  8. Chen S, Ma Y, Li H, et al. Anti-diabetic e?ects of Inonotus obliquus extract in high fat diet combined streptozotocin-induced type 2 diabetic mice. Nutr Hosp 2022;39(6):1256-1263. PubMed
  9. Ye X, Wu K, Xu L, et al. Methanol extract of Inonotus obliquus improves type 2 diabetes mellitus through modifying intestinal flora. Front Endocrinol (Lausanne) 2023;13:1103972. PubMed

See these in context on the Chaga monograph →

Parts of this content are provided by the Therapeutic Research Center, LLC.

DISCLAIMER: Currently this does not check for drug-drug interactions. This is not an all-inclusive comprehensive list of potential interactions and is for informational purposes only. Not all interactions are known or well-reported in the scientific literature, and new interactions are continually being reported. Input is needed from a qualified healthcare provider including a pharmacist before starting any therapy. Application of clinical judgment is necessary.

© 2021 Therapeutic Research Center, LLC

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