Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Chaga Mushroom 1,650 mg Ingredients & Drug Interactions

by Fresh Nutrition

Chaga Mushroom 1,650 mg label
See full label image
Capsule 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 Chaga Mushroom 1,650 mg 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

Chaga Mushroom 1,650 mg is a dietary supplement by Fresh Nutrition 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 organic Chaga Mushroom. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Chaga Mushroom 1,650 mg by Fresh Nutrition

Ask about any prescription or over-the-counter medication and we check it for interactions with Chaga Mushroom 1,650 mg by Fresh Nutrition — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Chaga Mushroom 1,650 mg by Fresh Nutrition

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 16, 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.

Fresh Nutrition's Chaga Mushroom contains one active ingredient: organic chaga mushroom extract at 1,650 mg per capsule. Chaga is a fungus that grows on birch trees and is used traditionally in teas and foods.

The capsule itself is made from cellulose and hypromellose, which are inactive ingredients that help hold the powder together.

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: improve immunity level and antioxidant property.
  • We looked for evidence on: immune function, antioxidant status.
  • Our graded evidence for these ingredients doesn't cover that particular purpose.

The evidence for chaga isn't established yet in the data we hold. There isn't enough reliable research to rate it for heart disease, diabetes, COVID-19, or other conditions.

If you're considering it for a specific health goal, talk with your doctor or pharmacist about what the current evidence actually supports.

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 used in foods and teas, but human safety data are limited. There have been rare reports of kidney problems — two cases of kidney failure and one of acute kidney injury — linked to very high chaga intake; chaga contains high levels of oxalate, which can stress the kidneys if consumed in large amounts.

There isn't enough safety information to recommend chaga during pregnancy or while breastfeeding. If you're pregnant, nursing, or planning to become pregnant, talk with your doctor or pharmacist before taking this product.

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.

Before you take this chaga product, check with your doctor or pharmacist if you use blood thinners or antiplatelet drugs — chaga may increase bleeding risk (Moderate concern). Also double-check if you take immunosuppressants or diabetes medications, as chaga may interfere with how they work.

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 may be worth considering if you're interested in traditional mushroom supplements, but the evidence for specific health benefits isn't solid yet. If you take blood thinners, diabetes drugs, or immunosuppressants, check your exact medications with your doctor or pharmacist before starting.

Those with kidney concerns should also talk it over first because of oxalate content.

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 Mar 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 Chaga Mushroom 1,650 mg, straight from the product label.

Brand Fresh Nutrition
Barcode (UPC) 850012956938
Net contents 90 Capsule(s)
Market status On market
Date entered into DSLD Mar 25, 2021
DSLD ID 242057
Product type Non-nutrient/non-botanical
Supplement form Capsule
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free
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 Chaga Mushroom 1,650 mg by Fresh Nutrition, 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:
3 Capsule(s)
Maximum serving Sizes:
3 Capsule(s)
Servings per container
30
UPC/BARCODE
850012956938
IngredientAmount% DV
organic Chaga Mushroom1650 mg--

Other ingredients: Cellulose Hypromellose

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.
Formulation

Vegan

Non GMO Gluten free Soy free

No artificial colors. No artificial flavors. No preservatives. Made with Non-GMO, all natural ingredients!

Essential immunity support Powerful antioxidant Healthy immune support High in fiber

Fresh Nutrition produces the most potent and highest quality Organic Chaga Mushrooms. Our raw materials are carefully sourced and cultivated; contain no fillers, additives, and are manufactured domestically in a cGMP facility. Thank you for choosing Fresh!

Quality Verified Third Party Tested For Quality And Purity To provide our consumers with complete confidence in our product quality, every batch is 3rd party tested for quality & purity.

Formula

Chaga Mushroom Chaga Mushroom is well known to improve immunity level. It is also well regarded for its antioxidant property, Fresh Nutrition Chaga Mushroom is an optimal healthy choice because it is low in calorie and high in fiber.

Made with Non-GMO, all natural ingredients!

1,650 mg per serving

General Statements

Fresh Nutrition Our goal is to create high-quality natural products using both organic and responsibly sourced ingredients to optimize health and well-being.

Suggested/Recommended/Usage/Directions

Recommended Dosage Take three (3) capsules daily with sufficient water before a meal.

Seals/Symbols

Non GMO Project Verified nongmoproject.org

Made in USA

FDA Statement of Identity

Dietary Supplement

FDA Disclaimer Statement

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.

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

See for yourself

Chaga Mushroom 1,650 mg by Fresh Nutrition label

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

Chaga Mushroom 1,650 mg 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 Chaga Mushroom 1,650 mg by Fresh Nutrition

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

Serving size3 Capsule(s) Dosage formCapsule Servings per container30 Amounts shown are per serving.

Organic Chaga Mushroom

Interacts with
327 drugs
1650 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...

Organic Chaga Mushroom monograph & interactions

Other (inactive) ingredients: Cellulose Hypromellose. These complete the product’s ingredient list but are not active constituents.

Interaction report

Chaga Mushroom 1,650 mg by Fresh Nutrition Drug Interactions

Want to check YOUR meds against Chaga Mushroom 1,650 mg?

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

organic Chaga Mushroom 327

Individual Drug Interactions

The ingredients in Chaga Mushroom 1,650 mg interact with 327 drugs. Click any drug to see the details.

1 of the 1 ingredient in Chaga Mushroom 1,650 mg interact with drugs. Each result below shows which ingredient is responsible. organic Chaga Mushroom

Each ingredient & the kinds of drugs it affects

For each ingredient in Chaga Mushroom 1,650 mg 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.

organic 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
organic Chaga Mushroom full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Chaga Mushroom 1,650 mg, from the product label.

Fresh Nutrition

See all Fresh Nutrition products
Name
Fresh Nutrition by Excelsior Nutrition Inc.
Street Address
1601 Dove St
City
Newport Beach
State
California
ZipCode
92660
Web Address
www.fresh-nutrition.com
Pharmacist Counseling Corner

Chaga Mushroom 1,650 mg by Fresh Nutrition: Common Questions

Does Chaga Mushroom 1,650 mg by Fresh Nutrition interact with any medications?
Yes. Based on its ingredients, Chaga Mushroom 1,650 mg 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?
Chaga Mushroom 1,650 mg 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.
What exactly is chaga?
Chaga is a fungus that grows on birch trees. It's been used in teas and foods traditionally, especially in Eastern Europe and Asia, and that's where most of the knowledge about it comes from.
Does chaga actually help with diabetes or heart disease?
The evidence isn't reliable enough yet to say whether it works for those conditions. There's interest in it, but we need stronger human studies before we can rate its effectiveness.
Is chaga safe during pregnancy?
There isn't enough safety information to recommend it during pregnancy. If you're pregnant or thinking about becoming pregnant, talk with your doctor or pharmacist before taking it.
Can too much chaga cause problems?
Yes — there have been rare reports of kidney failure and acute kidney injury from very high chaga intake. Chaga contains high levels of oxalate, which can stress your kidneys, so moderation matters, especially if you already have kidney concerns.
Does this product have fillers?
The capsule contains cellulose and hypromellose as inactive ingredients — these help keep the powder in capsule form. The active ingredient is the chaga mushroom itself.

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

Not sure if Chaga Mushroom 1,650 mg 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.

Chaga Mushroom 1,650 mg label
Go deeper

The Full Monographs Behind Chaga Mushroom 1,650 mg’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

Chaga Mushroom 1,650 mg'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

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team