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Dietary supplement

Red Cabbage 450 mg 4:1 Extract Ingredients & Drug Interactions

by TerraVita Premium Collection

Red Cabbage 450 mg 4:1 Extract label
See full label image
Capsule 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 450 mg 4:1 Extract 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 450 mg 4:1 Extract 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. 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 450 mg 4:1 Extract by TerraVita Premium Collection

Ask about any prescription or over-the-counter medication and we check it for interactions with Red Cabbage 450 mg 4:1 Extract by TerraVita Premium Collection — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Red Cabbage 450 mg 4:1 Extract 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 at 450 mg per capsule in a 4:1 concentration, which means the extract is four times more potent than whole cabbage. Red cabbage is a vegetable from the Brassicaceae family — the same family as broccoli and cauliflower — and this extract captures its concentrated nutrients and compounds.

The capsule itself is made from gelatin and water, which are inactive ingredients that hold the extract together.

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 on red cabbage extract is mixed. It's rated possibly effective for breast engorgement — some studies support this use.

However, for bladder cancer, colorectal cancer, gastric cancer, and high cholesterol (hyperlipidemia), the evidence we hold is insufficient to say whether it works. These conditions need more research before we can make a solid claim.

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.

Red cabbage as a food is well tolerated and safe for most people. As a concentrated supplement in medicinal amounts, though, it hasn't been studied as thoroughly, so we can't say as confidently how safe larger doses are long term.

Side effects are uncommon. When cabbage leaves are applied to skin, contact dermatitis (skin irritation) is possible.

Allergic reactions to cabbage itself are rare, but because cabbage shares surface proteins with broccoli and cauliflower, people allergic to those vegetables should be cautious — anaphylactic reactions have been reported with related vegetables. A small study of people using cabbage leaf wraps on their knees found them generally well tolerated, with only one person reporting itching and burning (later found to have shingles, which may have explained it).

We don't have enough safety data on pregnancy or breastfeeding with this supplement to advise either way — talk with your doctor or pharmacist for personalized guidance if you're pregnant, nursing, or planning either.

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.

Before taking this product, double-check any blood thinners you're on (especially warfarin), blood sugar medications, pain relievers like acetaminophen, anti-anxiety medications like oxazepam, and any other drugs your liver metabolizes — red cabbage extract can speed up how your body clears many of these, potentially making them less effective.

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.

Red cabbage extract might appeal to you if you're looking for a concentrated vegetable supplement, especially for breast engorgement, where there's some evidence it may help. But if you take blood thinners like warfarin, blood sugar medications, pain relievers, or anti-anxiety drugs regularly, you need to check with your pharmacist first — this extract can interfere with how your body clears several drug types.

Altogether, these interactions span 323 individual medications.

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 Apr 21, 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 450 mg 4:1 Extract, straight from the product label.

Brand TerraVita Premium Collection
Barcode (UPC) 064435196110
Net contents 100 Capsule(s)
Market status On market
Date entered into DSLD Apr 21, 2023
DSLD ID 288427
Product type Botanical
Supplement form Capsule
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 450 mg 4:1 Extract 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:
1 Capsule(s)
Maximum serving Sizes:
1 Capsule(s)
Servings per container
100
UPC/BARCODE
064435196110
IngredientAmount% DV
Red Cabbage extract450 mg--

Other ingredients: Gelatin, Water

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 Take 1 capsule 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 450 mg 4:1 Extract by TerraVita Premium Collection label

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

Red Cabbage 450 mg 4:1 Extract 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 450 mg 4:1 Extract by TerraVita Premium Collection

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

Serving size1 Capsule(s) Dosage formCapsule Servings per container100 Amounts shown are per serving.

Red Cabbage extract

Interacts with
325 drugs
450 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 monograph & interactions

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

Interaction report

Red Cabbage 450 mg 4:1 Extract by TerraVita Premium Collection Drug Interactions

Want to check YOUR meds against Red Cabbage 450 mg 4:1 Extract?

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 325

Individual Drug Interactions

The ingredients in Red Cabbage 450 mg 4:1 Extract interact with 325 drugs. Click any drug to see the details.

1 of the 1 ingredient in Red Cabbage 450 mg 4:1 Extract interact with drugs. Each result below shows which ingredient is responsible. Red Cabbage extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Red Cabbage 450 mg 4:1 Extract 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 extract6 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 full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Red Cabbage 450 mg 4:1 Extract, 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 450 mg 4:1 Extract by TerraVita Premium Collection: Common Questions

Does Red Cabbage 450 mg 4:1 Extract by TerraVita Premium Collection interact with any medications?
Yes. Based on its ingredients, Red Cabbage 450 mg 4:1 Extract 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 450 mg 4:1 Extract 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 help with breast engorgement?
The evidence is rated possibly effective for breast engorgement, so there's some support for it — though the data isn't as strong as we'd like. A lot of people apply chilled cabbage leaves directly to the breast for this, but talk with your provider first to make sure it's right for you.
What about using it for cancer prevention?
We don't have enough reliable evidence to say whether red cabbage helps prevent bladder, colorectal, or gastric cancer. The research so far is inconclusive, so we can't make that claim.
Is it safe to eat cabbage normally while taking this supplement?
Eating regular cabbage as food is safe for most people. This supplement is a concentrated 4:1 extract, though, so it's much stronger than eating a salad. The safety of taking it long term in supplement form hasn't been well studied, so if you're eating a lot of fresh cabbage too, mention that to your pharmacist.
Could I have an allergic reaction to this?
True allergies to cabbage are rare, but if you're allergic to broccoli, cauliflower, or other Brassicaceae vegetables, you should be cautious — cabbage shares some of the same allergenic proteins. Anaphylactic reactions to related vegetables have been reported, so talk with your doctor if you have a history of vegetable allergies.
What are the inactive ingredients?
The capsule is made from gelatin and water — that's it. No fillers or binders beyond those.
Is there enough data on this in pregnancy and breastfeeding?
We don't have enough safety information on this supplement during pregnancy or breastfeeding to advise you either way. If you're pregnant, planning to be, or nursing, talk with your doctor or pharmacist before taking it.

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

Not sure if Red Cabbage 450 mg 4:1 Extract is safe with your meds?

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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 450 mg 4:1 Extract label
Go deeper

The Full Monographs Behind Red Cabbage 450 mg 4:1 Extract’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 450 mg 4:1 Extract'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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