Black Walnut Hulls 900 mg Ingredients & Drug Interactions
by Nature's Way
What is this page for?
First and foremost: checking Black Walnut Hulls 900 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
Black Walnut Hulls 900 mg is a dietary supplement by Nature's Way with 1 active ingredient. Its ingredients are commonly taken for intestinal parasites and worms, digestive complaints, antimicrobial and antifungal support.We don’t currently list a known drug interaction for its mapped ingredients — but that doesn’t guarantee none exist, so always confirm with your pharmacist.
HelloPharmacist Scorecard of Black Walnut Hulls 900 mg by Nature's Way
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.
What’s inside
Full disclosure
This product contains one active ingredient: Black Walnut (900 mg per capsule). Black walnut hull — the fibrous covering of the walnut — is the part used here.
The capsule itself is made from hypromellose and cellulose, which are inactive ingredients that help hold the powder together.
Does it work?
Couldn't assess
The evidence for black walnut isn't established in the data we hold. For coronary heart disease and wound healing, the available research is insufficient to rate whether it works.
If you're considering this product for a specific health goal, we'd recommend talking with your pharmacist or doctor about what the science supports for your situation.
How safe is it?
Well-documented data
Black walnut hull is generally well tolerated when taken by mouth for short-term use in most adults, but human safety data are limited and long-term use hasn't been well studied. Because the hull contains high amounts of tannins (plant compounds), the most common side effect is gastrointestinal upset — stomach discomfort or digestive issues.
If you have a tree nut allergy, avoid this product; tree nuts are a major food allergen and can trigger allergic reactions in sensitive people. During pregnancy, there isn't enough safety information — the data advises against use.
While breastfeeding, safety data are also insufficient, so it's best avoided. If you're pregnant, planning pregnancy, or nursing, talk with your doctor or pharmacist before taking this.
Meds to double-check
No known interactions
No interactions are documented for the ingredients we could check. Even so, if you take any prescription or regular over-the-counter medications, run them through the interaction checker on this page or ask your pharmacist to be certain.
The bottom line
Scorecard at a glanceFully disclosed formula with no assessable stated purpose. No medication interactions are currently documented, and safety information is well characterized.
Black Walnut Hulls may be worth considering if you're looking for a short-term supplement and have no tree nut allergy, but the evidence for what it does isn't clear, and long-term safety isn't well studied. If you're pregnant, breastfeeding, or have a nut allergy, skip it.
Ask your pharmacist whether it makes sense for your situation.
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 May 21, 2025.
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
General information
Key facts about Black Walnut Hulls 900 mg, straight from the product label.
| Brand | Nature's Way |
|---|---|
| Barcode (UPC) | 033674106006 |
| Net contents | 100 Vegan Capsule(s) |
| Market status | On market |
| Date entered into DSLD | May 21, 2025 |
| DSLD ID | 327881 |
| Product type | Botanical |
| Supplement form | Capsule |
| Dietary claims / uses | All Other, Structure/Function |
| Intended target group(s) | Vegan, Vegetarian, Adult (18 - 50 Years), Gluten Free, Dairy Free |
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 Black Walnut Hulls 900 mg by Nature's Way, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| Black Walnut | 900 mg | -- |
Other ingredients: Hypromellose, Cellulose
Tap any ingredient to jump to its full detail below.
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
Traditional digestive tract tonic Made with the quality you trust Botanicals are sourced where they grow best From the black walnut tree, native to North America
Gluten Free. No salt, wheat, corn, soy, dairy, gelatin, or artificial colors, flavors, or preservatives.
Bottled and tested in USA
Vegan V Gelatin Free
Vegan V Gelatin Free
Plant Powered Traditional Digestive Tract Tonic
Non GMO Project nongmoproject.org
General Statements
Explore more products at naturesway.com Questions? 1-800-962-8873 / naturesway.com Bottle made from 50% post-consumer recycled plastic
Brand IP Statement(s)
Copyright 2024 Nature's Way Brands, LLC
FDA Disclaimer Statement
These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
Formula
Black Walnut Hulls 900 mg per 2-capsule serving
Seals/Symbols
Non GMO Project nongmoproject.org
FDA Statement of Identity
Dietary Supplement
Suggested/Recommended/Usage/Directions
Recommendation: Adults take 2 capsules twice daily.
Precautions
Warning: This product is intended for short-term use only. Unless recommended by a healthcare professional, do not take for longer than a six week period of time.
If you are pregnant, nursing, or taking any medications, consult a healthcare professional before use.
Contains tree nuts (walnut).
Keep out of reach of children.
Storage
Keep tightly closed. Store at room temperature. Avoid excessive heat and direct sunlight.
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Black Walnut Hulls 900 mg by Nature's Way label
The label scan from the NIH Dietary Supplement Label Database. Tap to enlarge.
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)The Ingredients in Black Walnut Hulls 900 mg by Nature's Way
This is the 1 active ingredient this product is made of. Select it to open its full monograph.
Serving size2 Capsule(s) Dosage formCapsule Servings per container50 Amounts shown are per serving.
Black Walnut
No knowninteractions
Black walnut is a tree whose green hulls are traditionally used as a natural antiparasitic and digestive remedy, but solid human evidence for these us...
Black Walnut monograph & interactionsOther (inactive) ingredients: Hypromellose, Cellulose. These complete the product’s ingredient list but are not active constituents.
Black Walnut Hulls 900 mg by Nature's Way Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in Black Walnut Hulls 900 mg. This doesn’t guarantee none exist — always confirm with your pharmacist before combining a supplement with your medications.
Brand information
Manufacturer and brand details for Black Walnut Hulls 900 mg, from the product label.
Nature's Way
See all Nature's Way products- Name
- Nature's Way Brands, LLC
- City
- Green Bay
- State
- WI
- ZipCode
- 54311
- Phone Number
- 1-800-962-8873
- Web Address
- naturesway.com
Black Walnut Hulls 900 mg by Nature's Way: Common Questions
Does Black Walnut Hulls 900 mg by Nature's Way interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Will Black Walnut Hulls upset my stomach?
Is this safe to take long-term?
Can I take this if I have a tree nut allergy?
Is it safe during pregnancy or breastfeeding?
What is black walnut hull supposed to do?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Black Walnut Hulls 900 mg is safe with your meds?
Our pharmacists answer your medication & supplement questions — free.
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.
The Full Monographs Behind Black Walnut Hulls 900 mg’s Ingredients
Every ingredient we hold a full HelloPharmacist monograph for — uses, evidence, safety, and the complete interaction list.
Sources & How We Checked
Black Walnut Hulls 900 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.
- NIH Dietary Supplement Label Database (DSLD) — The official product label on file for this supplement.
- Natural Medicines (Therapeutic Research Center) — Evidence-graded clinical reference behind the ingredient interaction data.
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 3 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.
Black Walnut 3 references
- Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
- McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
- Food and Drug Administration. Food Allergen Labeling and Consumer Protection Act of 2004 (FALCPA); Public Law 108-282, Title II. Accessed on May 19, 2021. Available at: https://www.fda.gov/food/food-allergensgluten-free-guidance-documents-regulatory-infor
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