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Dietary supplement

Chaparral Leaf Powder Ingredients & Drug Interactions

by TerraVita Premium Collection

Chaparral Leaf 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 Chaparral Leaf 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

Chaparral Leaf Powder is a dietary supplement by TerraVita Premium Collection with 1 active ingredient. Its ingredients are commonly taken for pain and inflammation, skin conditions, antioxidant/general wellness.Based on those ingredients, 370 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Chaparral, 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 Chaparral Leaf Powder by TerraVita Premium Collection

Ask about any prescription or over-the-counter medication and we check it for interactions with Chaparral Leaf Powder by TerraVita Premium Collection — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Chaparral Leaf 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 16, 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: chaparral, supplied as a powder. Chaparral is a plant material traditionally used in herbal medicine.

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 Chaparral product and its label doesn't state a use — see Chaparral'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.

We hold no effectiveness data for chaparral in our records.

The evidence, ingredient by ingredient Chaparral

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.

Chaparral is regarded as unsafe for oral use. It can cause serious liver damage (hepatotoxicity), leading to jaundice, fatigue, abdominal pain, dark urine, light-colored stools, nausea, diarrhea, weight loss, fever, and loss of appetite.

More severe outcomes — including cirrhosis, acute hepatitis, and liver failure — have been reported, and some cases have required liver transplant. Chaparral can also cause kidney toxicity and cystic kidney disease.

The compound responsible for this toxicity appears to be nordihydroguaiaretic acid (NDGA), which is naturally present in chaparral. If applied to skin, chaparral may cause contact dermatitis (allergic rash).

Do not use chaparral during pregnancy or while breastfeeding due to the toxicity risk and lack of safety data.

Side effects, ingredient by ingredient Chaparral

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 — Chaparral.
  • The most serious interaction on file is rated Moderate.
  • For scale: 371 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 any medications that can damage the liver (hepatotoxic drugs), do not combine them with chaparral without checking with your doctor or pharmacist first — the combination carries a theoretical risk of additive liver damage. However, the bigger concern is chaparral's documented risk of severe liver and kidney toxicity on its own.

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.

Because of the well-documented risk of severe liver and kidney damage, chaparral is not recommended for oral use. The potential for serious harm — including liver failure — outweighs any benefit.

If you're considering this product, talk with your doctor or pharmacist first. Do not use it during pregnancy or while breastfeeding.

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 Chaparral Leaf Powder, straight from the product label.

Brand TerraVita Premium Collection
Barcode (UPC) 064435166526
Net contents 4 Ounce(s)
Market status On market
Date entered into DSLD Apr 21, 2023
DSLD ID 290148
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 Chaparral Leaf 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
064435166526
IngredientAmount% DV
Chaparral, 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 2006 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

Chaparral Leaf Powder by TerraVita Premium Collection label

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

Chaparral Leaf 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 Chaparral Leaf 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.

Chaparral, Powder

Interacts with
370 drugs
1000 mg per serving

Chaparral is a desert shrub long used in traditional medicine, but there is no reliable proof it treats any condition. It has been linked to serious a...

Chaparral, Powder monograph & interactions
Interaction report

Chaparral Leaf Powder by TerraVita Premium Collection Drug Interactions

Want to check YOUR meds against Chaparral Leaf 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
370Drugs
370 Moderate

Ingredients driving the most interactions

Chaparral, Powder 370

Individual Drug Interactions

The ingredients in Chaparral Leaf Powder interact with 370 drugs. Click any drug to see the details.

1 of the 1 ingredient in Chaparral Leaf Powder interact with drugs. Each result below shows which ingredient is responsible. Chaparral, Powder

Each ingredient & the kinds of drugs it affects

For each ingredient in Chaparral Leaf 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.

Chaparral, Powder1 drug type · 370 drugs

Hepatotoxic Drugs

Theoretically, chaparral might have additive adverse effects on the liver when used with hepatotoxic drugs.

Likelihood Possible Evidence D
Chaparral, Powder full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Chaparral Leaf 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

Chaparral Leaf Powder by TerraVita Premium Collection: Common Questions

Does Chaparral Leaf Powder by TerraVita Premium Collection interact with any medications?
Yes. Based on its ingredients, Chaparral Leaf Powder has a known interaction with 370 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Chaparral Leaf 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.
Can I take this if I'm pregnant or breastfeeding?
No. Chaparral is rated as likely unsafe during pregnancy and while breastfeeding because of its potential toxicity and the lack of safety data. Do not use it in either situation.
What are the side effects?
Chaparral can cause serious liver damage, with symptoms including jaundice, fatigue, belly pain, dark urine, light stools, nausea, diarrhea, weight loss, fever, and loss of appetite. More severe outcomes include cirrhosis, acute hepatitis, kidney cysts, and in rare cases, liver failure requiring transplant.
Is chaparral safe to take?
Chaparral is regarded as unsafe for oral use. Multiple cases of severe liver and kidney toxicity have been reported, and the toxicity risk is considered to outweigh any potential benefit.
What is chaparral used for?
Chaparral is a traditional plant medicine, but we hold no evidence data in our records showing it is effective for any condition. Given its serious safety concerns, it is not recommended for use.

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.

Chaparral Leaf Powder label
Go deeper

The Full Monographs Behind Chaparral Leaf Powder’s Ingredients

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

Herb & supplement monograph

Chaparral

Interacts with 370 drugs

Chaparral is a desert shrub long used in traditional medicine, but there is no reliable proof it treats any condition. It has been linked to serious and sometimes irreversible liver and kidn...

Read the full Chaparral monograph →
Sources

Sources & How We Checked

Chaparral Leaf 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 16 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.

Chaparral 16 references
  1. Smith BC, Desmond PV. Acute hepatitis induced by ingestion of the herbal medication chaparral. Aust N Z J Med 1993;23:526.. PubMed
  2. Gordon DW, Rosenthal G, Hart J, et al. Chaparral ingestion: the broadening spectrum of liver injury caused by herbal medications. JAMA 1995;273:489-90.
  3. Batchelor WB, Heathcote J, Wanless IR. Chaparral-induced hepatic injury. Am J Gastroenterol 1995;90:831-3.
  4. Katz M, Saibil F. Herbal hepatitis: subacute hepatic necrosis secondary to chaparral leaf. J Clin Gastroenterol 1990;12:203-6.
  5. Klepser TB, Klepser ME. Unsafe and potentially safe herbal therapies. Am J Health Syst Pharm 1999;56:125-38. PubMed
  6. Sheikh NM, Philen RM, Love LA. Chaparral-associated hepatotoxicity. Arch Intern Med 1997;157:913-9. DOI
  7. Heron S, Yarnell E. The safety of low-dose Larrea tridentata (DC) Coville (creosote bush or chaparral): a retrospective clinical study. J Altern Complement Med 2001;7:175-85..
  8. Chaparral-induced toxic hepatitis-California and Texas, 1992. MMWR Morb Mortal Wkly Rep 1992;41:812-4.. DOI
  9. Estes JD, Stolpman D, Olyaei A, et al. High prevalence of potentially hepatotoxic herbal supplement use in patients with fulminant hepatic failure. Arch Surg 2003;138:852-8.. PubMed
  10. Lambert JD, Zhao D, Meyers RO, et al. Nordihydroguaiaretic acid: hepatotoxicity and detoxification in the mouse. Toxicon 2002;40:1701-8.. PubMed
  11. Shasky DR. Contact dermatitis from Larrea tridentata (creosote bush). J Am Acad Dermatol 1986;15:302.. PubMed
  12. Smith AY, Feddersen RM, Gardner KD Jr, Davis CJ Jr. Cystic renal cell carcinoma and acquired renal cystic disease associated with consumption of chaparral tea: a case report. J Urol 1994;152:2089-91.. PubMed
  13. Kauma, H., Koskela, R., Makisalo, H., Autio-Harmainen, H., Lehtola, J., and Hockerstedt, K. Toxic acute hepatitis and hepatic fibrosis after consumption of chaparral tablets. Scand.J Gastroenterol. 2004;39(11):1168-1171. PubMed
  14. Leonforte, J. F. Contact dermatitis from Larrea (creosote bush). J Am Acad.Dermatol. 1986;14(2 Pt 1):202-207. PubMed
  15. Alderman, S., Kailas, S., Goldfarb, S., Singaram, C., and Malone, D. G. Cholestatic hepatitis after ingestion of chaparral leaf: confirmation by endoscopic retrograde cholangiopancreatography and liver biopsy. J Clin.Gastroenterol. 1994;19(3):242-247.
  16. Clark, F. Chaparral-induced toxic hepatitis: California and Texas, 1992. MMWR Morb Mortal Wkly Rep. 1992;41:812-814. DOI

See these in context on the Chaparral 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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