Black Walnut Ingredients & Drug Interactions
What is this page for?
First and foremost: checking Black Walnut 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 is a dietary supplement by Oregon's Wild Harvest 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 by Oregon's Wild Harvest
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: fresh organic Black Walnut. Black walnut has been used traditionally for a range of purposes, though the scientific evidence supporting its effectiveness for most uses remains limited.
The product also contains organic alcohol as an inactive ingredient to preserve and extract the plant material.
Does it work?
Couldn't assess
The evidence for black walnut is insufficient to reliably rate it for coronary heart disease or wound healing. In other words, we don't have enough solid research to say whether it works for these purposes.
If you're considering it for a specific health goal, talk with your doctor or pharmacist about what the current evidence does and doesn't show.
How safe is it?
Well-documented data
Black walnut is generally well tolerated when taken by mouth, though the leaf, bark, and hull contain high levels of tannins — compounds that can cause gastrointestinal upset and, rarely, other effects. Tree nuts (including black walnuts) are a major food allergen in the United States, so avoid this product if you have a tree nut allergy.
The safety data advise against use during pregnancy and breastfeeding, as there isn't enough information to know it's safe in those situations. Short-term use appears acceptable for most adults, but long-term safety hasn't been well studied.
Meds to double-check
No known interactions
No medication interactions are documented in our data for the ingredients we checked. That said, use this page's search tool to confirm your specific medications, or ask your doctor or pharmacist before you start.
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 by Oregon's Wild Harvest is generally well tolerated, and no medication interactions are documented for it. If you're pregnant, breastfeeding, or have a tree nut allergy, check with your doctor or pharmacist before taking it.
Because the evidence for its effectiveness is limited, it's worth discussing with your healthcare provider whether it's the right choice for what you're trying to support.
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 Jul 21, 2022.
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, straight from the product label.
| Brand | Oregon's Wild Harvest |
|---|---|
| Barcode (UPC) | 706195001432 |
| Net contents | 1 fl. Oz.; 30 mL |
| Market status | On market |
| Date entered into DSLD | Jul 21, 2022 |
| DSLD ID | 270486 |
| Product type | Botanical |
| Supplement form | Liquid |
| Dietary claims / uses | All Other |
| Intended target group(s) | Adult (18 - 50 Years), Women (not pregnant or lactating), Organic, 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 by Oregon's Wild Harvest, sourced from the NIH Dietary Supplement Label Database.
Supplement Facts
| Ingredient | Amount | % DV |
|---|---|---|
| fresh organic Black Walnut | 500 mg | -- |
Other ingredients: organic Alcohol
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.
General Statements
We care about the future. As certified organic farmers we grow many of the herbs found in our products. Our regenerative practices heal the land, sequester carbon from the atmosphere and ensure that pure, potent herbal medicine is available today and for future generations. Peace.
Formulation
Free from: Gluten, dairy and soy allergens.
Non GMO GF (Gluten free)
Extract
Certified Organic by Oregon Tilth
Precautions
Caution: Keep out of reach of children.
Do not take if pregnant or nursing. If taking medication consult a healthcare professional before use.
Discontinue use if unusual symptoms occur.
Alcohol Content: Not more than 55%. Contains Walnut.
Do not exceed recommended dose. Due to tannis, it is advised to discontinue use after 6 weeks. Not recommended for long-term use.
Suggested/Recommended/Usage/Directions
Shake well.
Suggested Use: Take 1 mL twice daily in warm water or juice or as directed by your healthcare professional. 1 mL = approx. 40 drops. Do not exceed recommended dose. Due to tannis, it is advised to discontinue use after 6 weeks. Not recommended for long-term use.
Storage
Store upright in a cool, dry place.
Brand IP Statement(s)
Oregon's Wild Harvest Herbal Supplement Since 1994
FDA Statement of Identity
Herbal Supplement
Seals/Symbols
USDA Organic
Oregon Tilth Certified Organic (OTCO)
Is this label outdated? Report a formula or label change and our pharmacy team will review it.
Black Walnut by Oregon's Wild Harvest 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 by Oregon's Wild Harvest
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 container30 Amounts shown are per serving.
Fresh organic 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...
Fresh organic Black Walnut monograph & interactionsOther (inactive) ingredients: Organic Alcohol. These complete the product’s ingredient list but are not active constituents.
Black Walnut by Oregon's Wild Harvest Drug Interactions
We don’t currently list any known drug interactions for the mapped ingredients in Black Walnut. 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, from the product label.
Oregon's Wild Harvest
See all Oregon's Wild Harvest products- Name
- Oregon's Wild Harvest
- City
- Redmond
- State
- OR
- ZipCode
- 97756
- Phone Number
- 800-316-6869
- Web Address
- oregonswildharvest.com
Black Walnut by Oregon's Wild Harvest: Common Questions
Does Black Walnut by Oregon's Wild Harvest interact with any medications?
How can one product interact with so many drugs?
Where does this information come from?
Is black walnut safe if I'm pregnant or breastfeeding?
Can I take this if I have a tree nut allergy?
What side effects might I experience?
Does black walnut actually work for heart health or wound healing?
Is this safe for long-term use?
Written and reviewed by the HelloPharmacist editorial staff. Our editorial policy
Not sure if Black Walnut 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’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'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