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Dietary supplement

Yellow Pau d' Arco Ingredients & Drug Interactions

by Traditional Medicinals

Yellow Pau d' Arco label
See full label image
Other (e.g. Tea Bag) 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 Yellow Pau d' Arco 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

Yellow Pau d' Arco is a dietary supplement by Traditional Medicinals with 1 active ingredient. Its ingredients are commonly taken for infections (bacterial, fungal, yeast), inflammation, immune support.Based on those ingredients, 122 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Yellow Pau d'Arco. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

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Check Your Meds Against Yellow Pau d' Arco by Traditional Medicinals

Ask about any prescription or over-the-counter medication and we check it for interactions with Yellow Pau d' Arco by Traditional Medicinals — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Yellow Pau d' Arco by Traditional Medicinals

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.
  • “All Herbal Ingredients” is listed as a grouped ingredient — the label doesn't break down how much of each component you get.

This tea contains one active ingredient: yellow pau d'arco, a bark traditionally used in herbal medicine. There are no other inactive fillers or excipients listed.

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 Pau D'arco product and its label doesn't state a use — see Pau D'arco'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 for yellow pau d'arco is limited. We don't have reliable data to rate how well it works for cancer, peptic ulcers, wound healing, or dysmenorrhea — the four uses the monograph covers.

That means either the evidence hasn't been rigorously studied, or what's been studied isn't strong enough to support a confident claim.

The evidence, ingredient by ingredient Pau D'arco

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.

Pau d'arco is generally well tolerated at typical doses, but human safety data is limited and higher doses carry risk. At doses above 1.5 grams daily of the lapachol constituent, it can cause anemia, increased bleeding, severe nausea, vomiting, and diarrhea.

Don't use this product during pregnancy — the safety data advises against it due to possible harm to the baby. There isn't enough data to know if it's safe while breastfeeding, so skip it during that time and talk with your pharmacist or doctor for personalized guidance.

Side effects, ingredient by ingredient Pau D'arco

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 — Pau D'arco.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 122 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 blood thinners or antiplatelet drugs — such as warfarin, apixaban, aspirin, clopidogrel, or others — check them against this product before starting. Pau d'arco may increase your bleeding risk when combined with these medications.

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.

Yellow Pau d'Arco is a single-ingredient herbal tea with limited evidence for its traditional uses. The main caution is with blood thinners and antiplatelet drugs — pau d'arco may increase bleeding risk.

Skip it if you're pregnant or breastfeeding. Check your exact medications with our tool before you start.

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 25, 2024.

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 Yellow Pau d' Arco, straight from the product label.

Brand Traditional Medicinals
Net contents 16 Wrapped Tea Bag(s); 0.85 Ounce(s); 24 Gram(s)
Market status On market
Date entered into DSLD Jul 25, 2024
DSLD ID 307015
Product type Botanical
Supplement form Other (e.g. Tea Bag)
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Kosher
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 Yellow Pau d' Arco by Traditional Medicinals, 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 Tea Bag(s)
Maximum serving Sizes:
1 Tea Bag(s)
Servings per container
16
IngredientAmount% DV
Calories0 Calorie(s)--
All Herbal Ingredients0 NP--
Yellow Pau d'Arco1500 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.
General Statements

Best if used by SEP2025B0013394 Use this number on all correspondence related to this product Herbs that work From field to cup, we make sure our teas deliver the benefits of these amazing plants. To deliver consistent high quality teas, we source organically farmed or organically wild-collected herbs from ethical trading partnerships, seeking out medicinal-grade plants. Only a small fraction of the world's herb supply meets our high quality standards. Learn more about our farming communities and our work to create positive social impact at traditionalmedicinals.com

Formulation

Daily herbal

Caffeine free

Non GMO Project Verified nongmoproject.org

Certified B Corporation

FDA Statement of Identity

Herbal Supplement

Formula

OK (Kosher)

Taste Floral and foresty with soft tannins. Plant story Shamans and medicine people of South America have used the inner bark of the flowering pau d'arco tree for generations. Today, herbalists around the world sing its praises. Some of our favorite is sourced with great care from deep in the wild Amazonian rainforest, where it is known locally as tahuari.

Seals/Symbols

Non GMO Project Verified nongmoproject.org OK (Kosher) Certified B Corporation

FDA Disclaimer Statement

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

Suggested/Recommended/Usage/Directions

To enjoy Pour 8 oz. freshly boiled water over 1 tea bag. Cover & steep for 10-15 min. Squeeze & remove tea bag to ensure maximum goodness. Enjoy 1-4 cups per day.

Precautions

For adults only!

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

See for yourself

Yellow Pau d' Arco by Traditional Medicinals label

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

Yellow Pau d' Arco 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 Yellow Pau d' Arco by Traditional Medicinals

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

Serving size1 Tea Bag(s) Dosage formOther (e.g. Tea Bag) Servings per container16 Amounts shown are per serving.

All Herbal Ingredients

0 NP per serving
Interaction report

Yellow Pau d' Arco by Traditional Medicinals Drug Interactions

Want to check YOUR meds against Yellow Pau d' Arco?

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
122Drugs
122 Moderate

Ingredients driving the most interactions

Yellow Pau d'Arco 122

Individual Drug Interactions

The ingredients in Yellow Pau d' Arco interact with 122 drugs. Click any drug to see the details.

1 of the 1 ingredient in Yellow Pau d' Arco interact with drugs. Each result below shows which ingredient is responsible. Yellow Pau d'Arco

Each ingredient & the kinds of drugs it affects

For each ingredient in Yellow Pau d' Arco 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.

Yellow Pau d'Arco1 drug type · 122 drugs

Anticoagulant/Antiplatelet Drugs

Theoretically, pau d'arco might increase the risk of bleeding when taken with anticoagulant or antiplatelet drugs.
In vitro research shows that pau d'arco reduces platelet aggregation and may interfere with vitamin K. One clinical study shows that taking the lapachol constituent of pau d'arco in doses above 1.5 grams daily increases the risk of bleeding. The effects of whole pau d'arco or pau d'arco extract in humans are unclear.

Likelihood Possible Evidence D
Yellow Pau d'Arco full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Yellow Pau d' Arco, from the product label.

Traditional Medicinals

See all Traditional Medicinals products
Name
Traditional Medicinals
Street Address
4515 Ross Road
City
Sebastopol
State
CA
ZipCode
95472
Web Address
traditionalmedicinals.com
Pharmacist Counseling Corner

Yellow Pau d' Arco by Traditional Medicinals: Common Questions

Does Yellow Pau d' Arco by Traditional Medicinals interact with any medications?
Yes. Based on its ingredients, Yellow Pau d' Arco has a known interaction with 122 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Yellow Pau d' Arco 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 Yellow Pau d'Arco if I'm pregnant?
No — the safety data advises against it. There's concern for possible harm to the developing baby, and we don't have enough safety information.
Can I take this while breastfeeding?
No — there isn't enough safety data available. Talk with your pharmacist or doctor before using pau d'arco while nursing.
Does pau d'arco really work for cancer or ulcers?
The evidence isn't established yet. We don't have reliable data to say it works for cancer, peptic ulcers, wound healing, or dysmenorrhea — the uses it's traditionally known for.
What side effects can pau d'arco cause?
At typical doses, it's usually well tolerated. But at higher doses — above 1.5 grams daily of lapachol — it can cause anemia, bleeding, severe nausea, vomiting, and diarrhea. Human safety data is limited overall.
How much pau d'arco is in one tea bag?
That information isn't on file. Check the package label for the amount per serving, or ask us in the store.

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

Not sure if Yellow Pau d' Arco 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.

Yellow Pau d' Arco label
Go deeper

The Full Monographs Behind Yellow Pau d' Arco’s Ingredients

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

Herb & supplement monograph

Pau D'arco

Interacts with 122 drugs

Pau d'arco is a South American tree bark traditionally used for infections and inflammation, and it contains compounds like lapachol that show activity in lab studies. However, strong human...

Read the full Pau D'arco monograph →
Sources

Sources & How We Checked

Yellow Pau d' Arco'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.

Pau D'arco 6 references
  1. Gómez Castellanos JR, Prieto JM, Heinrich M. Red Lapacho (Tabebuia impetiginosa)--a global ethnopharmacological commodity? J Ethnopharmacol 2009;121:1-13. PubMed
  2. Guerra, Mde O., Mazoni, A. S., Brandao, M. A., and Peters, V. M. Toxicology of Lapachol in rats: embryolethality. Braz.J Biol. 2001;61(1):171-174. PubMed
  3. Felicio, A. C., Chang, C. V., Brandao, M. A., Peters, V. M., and Guerra, Mde O. Fetal growth in rats treated with lapachol. Contraception 2002;66(4):289-293. PubMed
  4. Son, D. J., Lim, Y., Park, Y. H., Chang, S. K., Yun, Y. P., Hong, J. T., Takeoka, G. R., Lee, K. G., Lee, S. E., Kim, M. R., Kim, J. H., and Park, B. S. Inhibitory effects of Tabebuia impetiginosa inner bark extract on platelet aggregation and vascular s
  5. Block JB, Serpick AA, Miller W, Wiernik PH. Early clinical studies with lapachol (NSC-11905). Cancer Chemother Rep 2. 1974;4(4):27-8.
  6. Algranti E, Mendonça EM, Ali SA, Kokron CM, Raile V. Occupational asthma caused by Ipe (Tabebuia spp) dust. J Investig Allergol Clin Immunol 2005;15(1):81-3.

See these in context on the Pau D'arco 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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