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Dietary supplement

Red Cabbage 4:1 Extract Powder Ingredients & Drug Interactions

by TerraVita Premium Collection

Red Cabbage 4:1 Extract Powder label
See full label image
Powder Category: 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 Red Cabbage 4:1 Extract Powder 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

Red Cabbage 4:1 Extract Powder is a dietary supplement by TerraVita Premium Collection with 1 active ingredient. Its ingredients are commonly taken for breast engorgement during breastfeeding, joint pain and swelling (topical), digestive and stomach upset.Based on those ingredients, 325 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Red Cabbage Extract, Powder. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Red Cabbage 4:1 Extract Powder by TerraVita Premium Collection

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HelloPharmacist Scorecard of Red Cabbage 4:1 Extract Powder by TerraVita Premium Collection

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: red cabbage extract in a 4:1 concentration (meaning four pounds of fresh cabbage are reduced to one pound of extract powder). There are no other inactive ingredients listed.

Red cabbage is a cruciferous vegetable rich in compounds like indole-3-carbinol and vitamin K, which are thought to account for its reported health effects.

Does it work?

Moderate evidence
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

This product doesn't appear to be marketed for a specific use, so we graded Cabbage's overall clinical evidence instead.

Moderate

Some clinical evidence supports Cabbage for:

Why this rating?
  • We looked at the product name, claims, and label statements and couldn't find a stated purpose to grade.
  • Since the label doesn't commit to one use, we graded the ingredient's overall clinical evidence instead.
  • On file: Breast engorgement — rated "Possibly Effective" (Natural Medicines).

The evidence for red cabbage extract is mixed and limited. The facts show it is possibly effective for breast engorgement—the clearest claim in the data.

For other uses listed (bladder cancer, colorectal cancer, gastric cancer, and high cholesterol), the evidence is insufficient to rate its effectiveness. This means we don't have reliable data yet to say whether it works for those conditions.

The evidence, ingredient by ingredient Cabbage

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.

Cabbage is safe when eaten as food, but this product is a concentrated 4:1 extract, and safety at higher medicinal doses hasn't been well studied. In trials of topical cabbage leaf wraps on joints, it was generally well tolerated; one person reported itching and burning, though that turned out to be shingles.

Allergic reactions to cabbage itself are rare, but if you're allergic to broccoli, cauliflower, or other cruciferous vegetables, you may react to cabbage too—contact dermatitis (skin irritation) from direct application has been reported. There is no pregnancy or breastfeeding safety data on file for this product.

Side effects, ingredient by ingredient Cabbage

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 — Cabbage.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs; diabetes medications.
  • For scale: 325 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.

Check your exact medications before taking this product if you take warfarin or other blood thinners, diabetes medications, drugs broken down by CYP1A2 enzymes, acetaminophen, oxazepam, or other glucuronidated drugs. All of these interactions are rated Moderate severity.

Use the medication checker on this page to search your prescriptions.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFully disclosed formula with some supporting evidence behind its ingredients' uses. Moderate medication interactions have been identified, and safety information is well characterized.

If you eat fresh cabbage and want a concentrated extract, this may interest you—especially if you're exploring options for breast engorgement. But because it interacts with a wide range of medications and its safety at supplement doses isn't well established, talk to your pharmacist before starting it, especially if you take blood thinners, diabetes drugs, or any regular prescription medication.

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 18, 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 Red Cabbage 4:1 Extract Powder, straight from the product label.

Brand TerraVita Premium Collection
Barcode (UPC) 064435196134
Net contents 4 Ounce(s)
Market status On market
Date entered into DSLD Jul 18, 2023
DSLD ID 289546
Product type Botanical
Supplement form Powder
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years)
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 Red Cabbage 4:1 Extract Powder by TerraVita Premium Collection, 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:
0.25 Teaspoon(s)
Maximum serving Sizes:
0.25 Teaspoon(s)
Servings per container
113
UPC/BARCODE
064435196134
IngredientAmount% DV
Red Cabbage Extract, Powder1000 mg--

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.
FDA Statement of Identity

A Dietary Supplement

Brand IP Statement(s)

Copyright 2017 TerraVita - Distributed by ZooScape LLC, All Rights Reserved.

Suggested/Recommended/Usage/Directions

Directions Stir 1/4 of a teaspoon into a glass of water and consume 3 times daily, with meals.

General Statements

TerraVita is an exclusive line of premium natural products that use the finest, purest and most potent ingredients in the world. TerraVita's hallmarks are the highest possible standards of purity, potency, stability and freshness. All products are prepared with the greatest quality control, from raw materials through the entire manufacturing process, right up to the moment your product is sealed for freshness and shipped to you.

Please recycle!

FDA Disclaimer Statement

Statements not evaluated by FDA. Product 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

Red Cabbage 4:1 Extract Powder by TerraVita Premium Collection label

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

Red Cabbage 4:1 Extract Powder 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 Red Cabbage 4:1 Extract Powder by TerraVita Premium Collection

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

Serving size0.25 Teaspoon(s) Dosage formPowder Servings per container113 Amounts shown are per serving.

Red Cabbage Extract, Powder

Interacts with
325 drugs
1000 mg per serving

Cabbage is a nutritious, low-calorie vegetable that is safe to eat as food and is sometimes applied to the skin as a leaf wrap for breast engorgement...

Red Cabbage Extract, Powder monograph & interactions
Interaction report

Red Cabbage 4:1 Extract Powder by TerraVita Premium Collection Drug Interactions

Want to check YOUR meds against Red Cabbage 4:1 Extract Powder?

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
325Drugs
325 Moderate

Ingredients driving the most interactions

Red Cabbage Extract, Powder 325

Individual Drug Interactions

The ingredients in Red Cabbage 4:1 Extract Powder interact with 325 drugs. Click any drug to see the details.

1 of the 1 ingredient in Red Cabbage 4:1 Extract Powder interact with drugs. Each result below shows which ingredient is responsible. Red Cabbage Extract, Powder

Each ingredient & the kinds of drugs it affects

For each ingredient in Red Cabbage 4:1 Extract Powder 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.

Red Cabbage Extract, Powder6 drug types · 325 drugs

Acetaminophen (Tylenol, Others)

Cabbage might increase clearance and reduce the effects of acetaminophen.
A small clinical study shows that daily consumption of cabbage and Brussels sprout decreases acetaminophen levels by as much as 16%, with some evidence suggesting that this effect is due to increased elimination through glucuronide conjugation.

Likelihood Probable Evidence B
Antidiabetes Drugs

Theoretically, cabbage might increase the risk of hypoglycemia when taken with antidiabetes drugs.
Animal and in vivo research suggests that cabbage might have hypoglycemic effects.

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

Theoretically, cabbage might decrease levels of drugs metabolized by CYP1A2.
Some animal research suggests that cabbage or its constituent indole-3-carbinol might increase drug metabolism and elimination by stimulating CYP1A2 activity.

Likelihood Possible Evidence D
Glucuronidated Drugs

Theoretically, cabbage might increase clearance and decrease the effects of drugs metabolized through glucuronide conjugation.
A small clinical study shows that daily consumption of cabbage and Brussels sprout decreases levels of some drugs metabolized through glucuronide conjugation.

Likelihood Probable Evidence B
Oxazepam (Serax)

Cabbage might increase clearance and reduce the effects of oxazepam.
A small clinical study shows that daily consumption of cabbage and brussels sprout decreases oxazepam levels by as much as 17%, with some evidence suggesting that this effect is due to increased elimination through glucuronide conjugation.

Likelihood Probable Evidence B
Warfarin (Coumadin)

Theoretically, cabbage might decrease the anticoagulant effects of warfarin.
Cabbage contains vitamin K. If consumed in large quantities, cabbage might decrease the anticoagulant effects of warfarin.

Likelihood Possible Evidence D
Red Cabbage Extract, Powder full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Red Cabbage 4:1 Extract Powder, from the product label.

TerraVita Premium Collection

See all TerraVita Premium Collection products
Name
TerraVita Fine Whole Herbs
City
Brampton
State
Ontario
Pharmacist Counseling Corner

Red Cabbage 4:1 Extract Powder by TerraVita Premium Collection: Common Questions

Does Red Cabbage 4:1 Extract Powder by TerraVita Premium Collection interact with any medications?
Yes. Based on its ingredients, Red Cabbage 4:1 Extract Powder has a known interaction with 325 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Red Cabbage 4:1 Extract Powder 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.
Does this actually work for what it claims?
The evidence is limited. Red cabbage extract is possibly effective for breast engorgement—that's the strongest claim we have. For cancer prevention and cholesterol, we don't have enough reliable evidence to say whether it works.
Is it safe if I'm not on medications?
Cabbage is safe as a food, but this is a concentrated 4:1 extract and hasn't been well studied at higher doses. If you're allergic to broccoli or other cruciferous vegetables, avoid it. Otherwise, short-term use is generally well tolerated, though you should still talk to your provider first.
Can I take this while pregnant or breastfeeding?
There's no safety data on file for this product during pregnancy or breastfeeding. Talk with your doctor or pharmacist before using it—they can give you personalized advice based on your situation.
What's the difference between eating cabbage and taking this extract?
This is a 4:1 extract powder, meaning it's four times more concentrated than fresh cabbage. That's why safety at this dose isn't as well studied, and why medication interactions are more of a concern.
What are the side effects?
When applied as a leaf wrap to joints, people tolerated it well—only one person reported itching and burning, which turned out to be unrelated. Allergic reactions are rare but possible if you're sensitive to other cruciferous vegetables. Contact dermatitis from direct skin contact has been reported.

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.

Red Cabbage 4:1 Extract Powder label
Go deeper

The Full Monographs Behind Red Cabbage 4:1 Extract Powder’s Ingredients

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

Herb & supplement monograph

Cabbage

Interacts with 325 drugs

Cabbage is a nutritious, low-calorie vegetable that is safe to eat as food and is sometimes applied to the skin as a leaf wrap for breast engorgement or sore joints. Most medicinal claims ar...

Read the full Cabbage monograph →
Sources

Sources & How We Checked

Red Cabbage 4:1 Extract Powder'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 15 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.

Cabbage 15 references
  1. Brinker F. Herb Contraindications and Drug Interactions. 2nd ed. Sandy, OR: Eclectic Medical Publications, 1998.
  2. Pantuck EJ, Pantuck CB, Anderson KE, et al. Effect of brussels sprouts and cabbage on drug conjugation. Clin Pharmacol Ther 1984;35:161-9. PubMed
  3. Roberts KL. A comparison of chilled cabbage leaves and chilled gelpaks in reducing breast engorgement. J Hum Lact 1995;11:17-20. PubMed
  4. Roberts KL, Reiter M, Schuster D. A comparison of chilled and room temperature cabbage leaves in treating breast engorgement. J Hum Lact 1995;11:191-4. PubMed
  5. Roberts KL, Reiter M, Schuster D. Effects of cabbage leaf extract on breast engorgement. J Hum Lact 1998;14:231-6. PubMed
  6. Nikodem VC, Danziger D, Gebka N, et al. Do cabbage leaves prevent breast engorgement? A randomized, controlled study. Birth 1993;20:61-4. PubMed
  7. Balk JL. Indole-3-carbinol for cancer prevention. Altern Med Alert 2000; 3:105-7.
  8. He YH, Friesen MD, Ruch RJ, Schut HA. Indole-3-carbinol as a chemopreventive agent in 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) carcinogenesis: inhibition of PhIP-DNA adduct formation, acceleration of PhIP metabolism, and induction of cytoch
  9. Platel, K. and Srinivasan, K. Plant foods in the management of diabetes mellitus: vegetables as potential hypoglycaemic agents. Nahrung 1997;41(2):68-74. PubMed
  10. Steinkellner, H., Rabot, S., Freywald, C., Nobis, E., Scharf, G., Chabicovsky, M., Knasmuller, S., and Kassie, F. Effects of cruciferous vegetables and their constituents on drug metabolizing enzymes involved in the bioactivation of DNA-reactive dietary c
  11. Dolle S, Hompes S, Lange L, Worm M. Cabbage allergy: a rare cause of food-induced anaphylaxis. Acta Derm Venereol 2013;93(4):485-6. PubMed
  12. Lauche R, Graf N, Cramer H, Al-Abtah J, Dobos G, Saha FJ. Efficacy of cabbage leaf wraps in the treatment of symptomatic osteoarthritis of the knee: a randomized controlled trial. Clin J Pain 2016;32(11):961-71. PubMed
  13. Lim AR, Song JA, Hur MH, Lee MK, Lee MS. Cabbage compression early breast care on breast engorgement in primiparous women after cesarean birth: a controlled trial. Int J Clin Exp Med 2015;8(11):21335-42.
  14. Milanesi N, Gola M. Irritant contact dermatitis caused by Savoy cabbage. Contact Dermatitis 2016;74(1):60-1. PubMed
  15. Saini P, Saini R. Cabbage leaves and breast engorgement. Indian J Public Health 2014;58(4):291-2. PubMed

See these in context on the Cabbage 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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