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Dietary supplement

Black Radish and Parsley Ingredients & Drug Interactions

by Kroeger Herb Products Co.

Black Radish and Parsley label
See full label image
Capsule Category: Botanical
Most serious interaction: Moderate
Clinical methodology reviewed by · Updated Sep 30, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Black Radish and Parsley 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

Black Radish and Parsley is a dietary supplement by Kroeger Herb Products Co. with 2 active ingredients. Its ingredients are commonly taken for water retention and bloating, urinary and bladder support, digestive upset.Based on those ingredients, 443 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Parsley, Black Radish. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Black Radish and Parsley by Kroeger Herb Products Co.

Ask about any prescription or over-the-counter medication and we check it for interactions with Black Radish and Parsley by Kroeger Herb Products Co. — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Black Radish and Parsley by Kroeger Herb Products Co.

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 12, 2026

What’s inside

Low disclosure
Ingredient Transparency · database check
Low

Most active ingredients don't disclose an individual amount — you can't tell how much of each you're getting.

Why this rating?
  • The label discloses an exact amount for 0 of its 2 active ingredients.
  • “Proprietary Blend” is a proprietary blend — the label gives one combined amount (900 mg) without saying how much of each component you get.

This product contains 2 active ingredients: Black Radish and Parsley, blended together in a proprietary formula. Both are plant materials traditionally used in herbal practice — parsley is a common culinary herb, and black radish is a root vegetable.

The capsule itself is made from a vegetarian source.

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: Supports the immune system and throat health.
  • We looked for evidence on: Immune function, Throat health, Respiratory health, Infection prevention.
  • Our graded evidence for these ingredients doesn't cover that particular purpose.

The evidence for what this product does isn't established in the data we hold. Both parsley and black radish are rated as having insufficient reliable evidence for the conditions they're associated with — including urinary tract infections, skin conditions, osteoarthritis, and diabetes.

If you're considering this for a specific health goal, talk to your pharmacist or doctor about what the current research actually supports.

The evidence, ingredient by ingredient Parsley Radish

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 2 of the 2 matched ingredients.
  • Pregnancy & breastfeeding safety ratings cover 2 of 2.
  • General safety write-ups exist for 2 of 2.
  • Remember: this measures how much safety information exists. Thin data is not the same as being safe.

Parsley is safe as food in normal amounts, but this product is a concentrated supplement — and concentrated parsley is a different story. In very high doses, parsley can cause serious effects like anemia, low blood pressure, or kidney problems; there's also a rare case of anaphylaxis (severe allergic reaction) on record.

Parsley may also stimulate the uterus, so it's not recommended in pregnancy. Black radish is generally well tolerated in normal food amounts; large amounts may irritate your stomach.

A rare allergy to radish has been reported with throat tightness and hives. Because this is a concentrated supplement, the safety data is limited compared to eating these foods.

Side effects, ingredient by ingredient Parsley Radish

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?
  • 2 of the 2 matched ingredients can interact with medications — Radish, Parsley.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 443 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, double-check any blood thinners or antiplatelet drugs you're on — parsley can increase bleeding risk (Moderate severity). Also flag diabetes medications, water pills (diuretics), and any sedatives or barbiturates; warfarin (Coumadin) is a particular concern.

If you're on any drug your liver processes, mention this product to your pharmacist to be safe.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no assessable stated purpose. Moderate medication interactions have been identified, and safety information is well characterized.

If you're on diabetes medications, blood thinners (especially warfarin), water pills, or sedatives, check with your pharmacist before taking this — parsley has documented interactions with all of these. It's not recommended in pregnancy.

If you have a known allergy to parsley or radish, avoid this product.

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

Assessment coverage: 2 of 2 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Jan 23, 2023.

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 Black Radish and Parsley, straight from the product label.

Brand Kroeger Herb Products Co.
Barcode (UPC) 696916100042
Net contents 100 Vegetarian Capsule(s)
Market status On market
Date entered into DSLD Jan 23, 2023
DSLD ID 282498
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
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 Black Radish and Parsley by Kroeger Herb Products Co., 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:
2 Capsule(s)
Maximum serving Sizes:
2 Capsule(s)
Servings per container
100
UPC/BARCODE
696916100042
IngredientAmount% DV
Proprietary Blend900 mg--
Total Carbohydrate1 Gram(s)1%
Parsley0 NP--
Black Radish0 NP--

Other ingredients: Vegetarian Source Capsules

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

Directions: 2 capsules 3 times daily before meals.

General Statements

A 16 day supply.

Formulation

Vegan.

No: GMO's, gluten, wheat, corn, rice, pesticides, or preservatives.

Supports the immune system & throat health

FDA Disclaimer Statement

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

FDA Statement of Identity

Herbal Supplement

Precautions

Do not purchase if seal is broken.

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

Black Radish and Parsley by Kroeger Herb Products Co. label

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

Black Radish and Parsley 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 Black Radish and Parsley by Kroeger Herb Products Co.

These are the 2 active ingredients this product is made of. Select any to open its full monograph.

Serving size2 Capsule(s) Dosage formCapsule Servings per container100 Amounts shown are per serving.

Most supplement products combine several ingredients, and a medication can interact with the product through any one of them. Each ingredient below shows whether it has known drug interactions.

Proprietary Blend

900 mg per serving

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

Interaction report

Black Radish and Parsley by Kroeger Herb Products Co. Drug Interactions

Want to check YOUR meds against Black Radish and Parsley?

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
443Drugs
443 Moderate

Ingredients driving the most interactions

Parsley 443
Black Radish 86

Individual Drug Interactions

The ingredients in Black Radish and Parsley interact with 443 drugs. Click any drug to see the details.

2 of the 2 ingredients in Black Radish and Parsley interact with drugs. Each result below shows which ingredient is responsible. Parsley Black Radish

Each ingredient & the kinds of drugs it affects

For each ingredient in Black Radish and Parsley with known interactions, here are the types of medications they can affect. Open any type for the detail — or search your exact drug in the checker above.

Parsley8 drug types · 443 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, parsley might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
Animal research suggests that parsley has antiplatelet effects.

Likelihood Possible Evidence D
Antidiabetes Drugs

Theoretically, parsley might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research suggests that parsley might decrease blood glucose. Monitor blood glucose levels closely. Dose adjustments might be necessary.

Likelihood Possible Evidence D
Cytochrome P450 1A2 (Cyp1A2) Substrates

Theoretically, parsley might increase serum levels of CYP1A2 substrates.
Laboratory research suggests that parsley can inhibit CYP1A2.

Likelihood Possible Evidence D
Diuretic Drugs

Theoretically, parsley might enhance or interfere with the effects of diuretic drugs.
Animal research suggests that parsley seed extract increases urine elimination. Parsley leaf and root might also interfere with diuretic therapy due their purported aquaretic effects.

Likelihood Possible Evidence D
Pentobarbital (Nembutal)

Theoretically, parsley might increase the duration of pentobarbital effects.
Animal research suggests that parsley juice prolongs the action of pentobarbital, perhaps by decreasing cytochrome P450 levels. It is not known if this occurs in humans or if this applies to other barbiturates or sedatives.

Likelihood Possible Evidence D
Sirolimus (Rapamune)

Theoretically, large quantities of parsley might increase sirolimus levels.
In one case report, an adult female with a history of kidney transplant presented with elevated blood sirolimus levels, approximately 4-7 times greater than previous measures, after daily consumption of a juice containing approximately 30 grams of parsley for 7 days. Sirolimus levels returned to normal a week after the parsley juice was discontinued.

Likelihood Possible Evidence D
Warfarin (Coumadin)

Theoretically, large amounts of parsley leaf and root might decrease the effects of warfarin.
Parlsey contains vitamin K.

Likelihood Possible Evidence D
Aspirin

Theoretically, aspirin might increase the severity of allergic reactions to parsley.
In one case, severe urticaria and swelling were reported after taking aspirin with parsley in an individual with a known mild parsley allergy.

Likelihood Unlikely Evidence D
Parsley full monograph & interactions

Black Radish1 drug type · 86 drugs

Antidiabetes Drugs

Theoretically, radish might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal research shows that radish extract, juice, and sprouts can reduce glucose levels. Animal research also shows that radish root juice 300 mg/kg reduces fasting and postprandial blood glucose in a rat model of diabetes, with effects similar to glibenclamide.

Likelihood Possible Evidence D
Black Radish full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Black Radish and Parsley, from the product label.

Kroeger Herb Products Co.

See all Kroeger Herb Products Co. products
Name
Kroeger Herb Products Co., Inc.
Street Address
1500 Kansas Avenue, Unit 4F
City
Longmont
State
CO
ZipCode
80501
Phone Number
303-443-0261
Pharmacist Counseling Corner

Black Radish and Parsley by Kroeger Herb Products Co.: Common Questions

Does Black Radish and Parsley by Kroeger Herb Products Co. interact with any medications?
Yes. Based on its ingredients, Black Radish and Parsley has a known interaction with 443 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Black Radish and Parsley contains 2 active ingredients, and an interaction can come from any of them. We check every ingredient, combine the results into one list per medication, and show which ingredient and mechanism is 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.
Is this safe to take if I'm pregnant or breastfeeding?
Parsley in medicinal or large amounts is not recommended in pregnancy — it may stimulate the uterus. Stick to normal food amounts only if you're pregnant. For breastfeeding, we don't have safety data on file, so talk to your doctor or pharmacist for personalized advice.
Can I take this if I'm allergic to parsley or radish?
No. Both parsley and radish allergies have been documented, including anaphylaxis (a severe reaction) with parsley. Avoid this product if you know you're allergic to either ingredient.
What does this product do?
Both parsley and black radish have traditional uses, but the evidence showing they actually work for specific conditions — like urinary tract infections, diabetes, or skin problems — isn't established yet. If you're looking for help with a particular health issue, ask your pharmacist what the research really shows.
Is this just food, or is it a supplement?
It's a concentrated supplement in capsule form, not whole food. Parsley and black radish are safe to eat as food, but concentrated extracts are a different story — they're stronger and come with more risk, especially in large amounts.
Could this cause stomach problems?
Large amounts of radish may irritate your stomach or cause mild indigestion. Parsley is generally well tolerated at low to moderate doses, but very high doses can cause serious effects. Start with the label dose and watch how you feel.

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.

Black Radish and Parsley label
Go deeper

The Full Monographs Behind Black Radish and Parsley’s Ingredients

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

Herb & supplement monograph

Parsley

Interacts with 443 drugs

Parsley is a popular culinary herb that is safe to eat in normal food amounts and is a good source of vitamins K and C. It is traditionally used as a diuretic and for digestion, but solid hu...

Read the full Parsley monograph → Herb & supplement monograph

Radish

Interacts with 86 drugs

Radish is a common edible root vegetable that is nutritious and generally safe to eat as food. Some people use radish (especially black radish) and its extracts for digestion and liver suppo...

Read the full Radish monograph →
Sources

Sources & How We Checked

Black Radish and Parsley'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 26 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.

Parsley 21 references
  1. Newall CA, Anderson LA, Philpson JD. Herbal Medicine: A Guide for Healthcare Professionals. London, UK: The Pharmaceutical Press, 1996.
  2. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Food, Drugs and Cosmetics. 2nd ed. New York, NY: John Wiley & Sons, 1996.
  3. McGuffin M, Hobbs C, Upton R, Goldberg A, eds. American Herbal Products Association's Botanical Safety Handbook. Boca Raton, FL: CRC Press, LLC 1997.
  4. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  5. Robbers JE, Tyler VE. Tyler's Herbs of Choice: The Therapeutic Use of Phytomedicinals. New York, NY: The Haworth Herbal Press, 1999.
  6. Foster S, Tyler VE. Tyler's Honest Herbal, 4th ed., Binghamton, NY: Haworth Herbal Press, 1999. DOI
  7. Eberhard P, Gall HM, Muller I, Moller R. Dramatic augmentation of a food allergy by acetylsalicylic acid. J Allergy Clin Immunol 2000;105:844 PubMed
  8. Tunali T, Yarat A, Yanardag R, et al. Effect of parsley (Petroselinum crispum) on the skin of STZ induced diabetic rats. Phytother Res 1999;13:138-41.. DOI
  9. Chuang CH, Doyle P, Wang JD, et al. Herbal medicines used during the first trimester and major congenital malformations: an analysis of data from a pregnancy cohort study. Drug Saf 2006;29:537-48. PubMed
  10. Ciganda C, and Laborde A. Herbal infusions used for induced abortion. J Toxicol.Clin Toxicol. 2003;41:235-239. PubMed
  11. Jakovljevic, V., Raskovic, A., Popovic, M., and Sabo, J. The effect of celery and parsley juices on pharmacodynamic activity of drugs involving cytochrome P450 in their metabolism. Eur.J Drug Metab Pharmacokinet. 2002;27(3):153-156. PubMed
  12. Kreydiyyeh, S. I. and Usta, J. Diuretic effect and mechanism of action of parsley. J Ethnopharmacol 2002;79(3):353-357. PubMed
  13. Yanardag, R., Bolkent, S., Tabakoglu-Oguz, A., and Ozsoy-Sacan, O. Effects of Petroselinum crispum extract on pancreatic B cells and blood glucose of streptozotocin-induced diabetic rats. Biol Pharm Bull. 2003;26(8):1206-1210. PubMed
  14. Bolkent, S., Yanardag, R., Ozsoy-Sacan, O., and Karabulut-Bulan, O. Effects of parsley (Petroselinum crispum) on the liver of diabetic rats: a morphological and biochemical study. Phytother.Res 2004;18(12):996-999.
  15. Ozsoy-Sacan, O., Yanardag, R., Orak, H., Ozgey, Y., Yarat, A., and Tunali, T. Effects of parsley (Petroselinum crispum) extract versus glibornuride on the liver of streptozotocin-induced diabetic rats. J Ethnopharmacol 3-8-2006;104(1-2):175-181. PubMed
  16. Peterson, S., Lampe, J. W., Bammler, T. K., Gross-Steinmeyer, K., and Eaton, D. L. Apiaceous vegetable constituents inhibit human cytochrome P-450 1A2 (hCYP1A2) activity and hCYP1A2-mediated mutagenicity of aflatoxin B1. Food Chem.Toxicol. 2006;44(9):147 PubMed
  17. Gadi, D., Bnouham, M., Aziz, M., Ziyyat, A., Legssyer, A., Legrand, C., Lafeve, F. F., and Mekhfi, H. Parsley extract inhibits in vitro and ex vivo platelet aggregation and prolongs bleeding time in rats. J Ethnopharmacol 8-17-2009;125(1):170-174. PubMed
  18. Arslan S, Ucar R, Caliskaner AZ. A Cases of Near-fatal Anaphylaxis: Parsley "Over-use" as an Herbal Remedy. Med Arch. 2014;68(6):426-7.
  19. Foti C, Cassano N, Mistrello G, Amato S, Romita P, Vena GA. Contact urticaria to raw arugula and parsley. Ann Allergy Asthma Immunol. 2011 May;106(5):447-8. PubMed
  20. Farzaei MH, Abbasabadi Z, Ardekani MR, Rahimi R, Farzaei F. Parsley: a review of ethnopharmacology, phytochemistry and biological activities. J Tradit Chin Med. 2013;33(6):815-26. PubMed
  21. Kurtaran M, Koc NS, Aksun MS, Yildirim T, Yilmaz SR, Erdem Y. Petroselinum crispum, a commonly consumed food, affects sirolimus level in a renal transplant recipient: a case report. Ther Adv Drug Saf 2021;12:20420986211009358.

See these in context on the Parsley monograph →

Radish 5 references
  1. Gruenwald J, Brendler T, Jaenicke C. PDR for Herbal Medicines. 1st ed. Montvale, NJ: Medical Economics Company, Inc., 1998.
  2. Damiani E, Aloia AM, Priore MG, Nardulli S, Ferrannini A. Generalized urticaria after ingestion of Raphanus sativus. Ann Allergy Asthma Immunol. 2011 Feb;106(2):168. PubMed
  3. Evans M, Paterson E, Barnes DM. An open label pilot study to evaluate the efficacy of Spanish black radish on the induction of phase I and phase II enzymes in healthy male subjects. BMC Complement Altern Med. 2014 Dec 9;14:475. PubMed
  4. Banihani SA. Radish (Raphanus sativus) and diabetes. Nutrients. 2017;9(9). pii: E1014. PubMed
  5. Shukla S, Chatterji S, Mehta S, Rai PK, Singh RK, Yadav DK, Watal G. Antidiabetic effect of Raphanus sativus root juice. Pharm Biol. 2011 Jan;49(1):32-7.

See these in context on the Radish 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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