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Dietary supplement

Horseradish Ingredients & Drug Interactions

by Herbal Terra

Horseradish label
See full label image
Liquid Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 9, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Horseradish 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

Horseradish is a dietary supplement by Herbal Terra with 1 active ingredient. Its ingredients are commonly taken for sinus and respiratory congestion, urinary tract infections, digestive support.Based on those ingredients, 16 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Horseradish Root Extract, Dry. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Horseradish by Herbal Terra

Ask about any prescription or over-the-counter medication and we check it for interactions with Horseradish by Herbal Terra — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Horseradish by Herbal Terra

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: Horseradish Root Extract, Dry. It's a concentrated liquid form, which means you're getting a potent dose of the plant material — much more than you'd get from the horseradish you'd eat on a sandwich.

The liquid also contains alcohol, water, and glycerin as inactive ingredients to deliver the extract.

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

This is a single-ingredient Horseradish product and its label doesn't state a use — see Horseradish's own graded uses on its monograph.

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.

The evidence we hold on horseradish doesn't yet support its use for the conditions it's typically marketed for. Respiratory tract infections, intestinal parasites, urinary tract infections (UTIs), and gout all fall into the "insufficient reliable evidence" category — meaning studies either haven't been done, they're too small, or the results are unclear.

That doesn't mean it doesn't work; it means we don't have solid proof yet.

The evidence, ingredient by ingredient Horseradish

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.

Horseradish in food amounts — the pinch you'd add to a plate — is generally well tolerated. But this is a concentrated supplement, and large amounts can irritate your digestive tract and mouth membranes.

In rare cases, consuming a lot of horseradish has caused serious effects like vasovagal syncope (fainting), bloody vomiting, severe diarrhea, and gastrointestinal upset. During pregnancy, the safety data advises against medicinal amounts; during breastfeeding, medicinal use hasn't been well studied, so stick to food amounts if you're nursing.

Side effects, ingredient by ingredient Horseradish

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 — Horseradish.
  • The most serious interaction on file is rated Moderate.
  • For scale: 16 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.

If you take thyroid hormone medication, double-check with your pharmacist before starting this product — horseradish may reduce how well it works (Moderate severity). No other medication types show documented interactions with the ingredient we hold data for.

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.

If you're interested in horseradish for respiratory or urinary tract health, the science isn't there yet to back it up. The main concern is thyroid medication — if you take thyroid hormone, check with us first.

For everyone, remember this is a concentrated extract, not the condiment; use it cautiously and talk to your pharmacist if you have digestive sensitivity.

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 Jun 25, 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

At a glance

General information

Key facts about Horseradish, straight from the product label.

Brand Herbal Terra
Barcode (UPC) 7238360265316
Net contents 2 Fluid Ounce(s); 60 mL
Market status On market
Date entered into DSLD Jun 25, 2025
DSLD ID 325104
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Gluten Free, Sugar 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 Horseradish by Herbal Terra, 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
60
UPC/BARCODE
7238360265316
IngredientAmount% DV
Horseradish Root Extract, Dry983 mg--

Other ingredients: Alcohol, Water, Glycerin

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.
Suggested/Recommended/Usage/Directions

Shake well before use. Adults take up to 30 drops (1 mL, one full squeeze of the dropper bulb) in 3-4 fl. oz. of juice or water up to 4 times a day.

Precautions

We recommend to seek expert medical advice before taking. May have contraindications and cause adverse reaction.

Consult a physician before giving to children under 18, before using during pregnancy, if nursing, or if you are on any medications.

Consult a physician before giving to children under 18, before using during pregnancy, if nursing, or if you are on any medications. Keep out of the reach of children!

Do not use if you are allergic to any ingredients.

Storage

Store in a cool, dry, dark place.

FDA Disclaimer Statement

This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure or prevent any disease.

Formulation

cGMP Made in compliance with cGMP 21 CFR 111 in an FDA registered and inspected facility.

Sugar free

Expertly extracted 100% natural Premium product

Organic alcohol

No artificial ingredients, color additives, fillers or binders.

Natural Gluten free

Formula

Cochlearia armoracia

Organic alcohol

FDA Statement of Identity

Herbal Supplement

Seals/Symbols

Made in USA

General Statements

Organic raw material.

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

See for yourself

Horseradish by Herbal Terra label

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

Horseradish 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 Horseradish by Herbal Terra

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 container60 Amounts shown are per serving.

Horseradish Root Extract, Dry

Interacts with
16 drugs
983 mg per serving Form: Cochlearia armoracia Root Extract, Dry

Horseradish is a pungent root used as a food and folk remedy, most often for sinus congestion and urinary tract complaints. Human evidence is limited,...

Horseradish Root Extract, Dry monograph & interactions

Other (inactive) ingredients: Alcohol, Water, Glycerin. These complete the product’s ingredient list but are not active constituents.

Interaction report

Horseradish by Herbal Terra Drug Interactions

Want to check YOUR meds against Horseradish?

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
16Drugs
16 Moderate

Ingredients driving the most interactions

Horseradish Root Extract, Dry 16

Individual Drug Interactions

The ingredients in Horseradish interact with 16 drugs. Click any drug to see the details.

1 of the 1 ingredient in Horseradish interact with drugs. Each result below shows which ingredient is responsible. Horseradish Root Extract, Dry

Each ingredient & the kinds of drugs it affects

For each ingredient in Horseradish 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.

Horseradish Root Extract, Dry1 drug type · 16 drugs

Thyroid Hormone

Theoretically, horseradish might interfere with the effects of thyroid hormone.
Horseradish and other members of the cabbage and mustard family are associated with depressed thyroid function.

Likelihood Possible Evidence D
Horseradish Root Extract, Dry full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Horseradish, from the product label.

Herbal Terra

See all Herbal Terra products
Name
Herbal Terra LLC
Phone Number
+18083857868
Web Address
herbalterra.com
Pharmacist Counseling Corner

Horseradish by Herbal Terra: Common Questions

Does Horseradish by Herbal Terra interact with any medications?
Yes. Based on its ingredients, Horseradish has a known interaction with 16 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Horseradish 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.
Will horseradish help my cough or sore throat?
The evidence we hold doesn't establish whether it works for respiratory tract infections. Studies either haven't been done or haven't been conclusive enough to say either way. Talk to your pharmacist or doctor if you're looking for something proven for those symptoms.
Can I take this while pregnant?
The safety data advises against medicinal amounts during pregnancy because we don't know enough about how it affects you or your baby. If you're pregnant, chat with your doctor or pharmacist before using it.
Can I take this while breastfeeding?
Stick to food amounts if you're nursing — medicinal use hasn't been well studied. If you want to use this supplement while breastfeeding, check with your pharmacist or doctor first.
What side effects might I notice?
In food amounts, it's generally well tolerated. But this is a concentrated extract, so large amounts can cause digestive upset, diarrhea, and irritation of your mouth and throat. In rare cases, heavy consumption has caused fainting, bloody vomiting, and severe stomach pain.
Are there fillers in this?
The active ingredient is Horseradish Root Extract. The liquid also contains alcohol, water, and glycerin to deliver it.
Is this safe to use with my thyroid medication?
Not without checking first. Horseradish may interfere with how thyroid hormones work, so run it past your pharmacist or doctor before you start, especially if you're on levothyroxine or a similar thyroid drug.

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

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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.

Horseradish label
Go deeper

The Full Monographs Behind Horseradish’s Ingredients

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

Herb & supplement monograph

Horseradish

Interacts with 16 drugs

Horseradish is a pungent root used as a food and folk remedy, most often for sinus congestion and urinary tract complaints. Human evidence is limited, and while culinary amounts are generall...

Read the full Horseradish monograph →
Sources

Sources & How We Checked

Horseradish'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 6 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.

Horseradish 6 references
  1. Blumenthal M, ed. The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Trans. S. Klein. Boston, MA: American Botanical Council, 1998.
  2. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  3. The Review of Natural Products by Facts and Comparisons. St. Louis, MO: Wolters Kluwer Co., 1999.
  4. Electronic Code of Federal Regulations. Title 21. Part 182 -- Substances Generally Recognized As Safe. Available at: https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/CFRSearch.cfm?CFRPart=182
  5. Panter, K. E. and James, L. F. Natural plant toxicants in milk: a review. J Anim Sci 1990;68(3):892-904. PubMed
  6. Lehmann CU, Puckett AL, Betz BO. 56-year-old man - increased heart rate - weakness - intense sweating - horseradish consumption - Dx?. J Fam Pract 2022;71(7):317-321. PubMed

See these in context on the Horseradish 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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