Interactions on record — worth a quick check against your medications. Check your meds →
Dietary supplement

Lungwort and Coltsfoot Ingredients & Drug Interactions

by Herbal Terra

Lungwort and Coltsfoot label
See full label image
Liquid 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 Lungwort and Coltsfoot 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

Lungwort and Coltsfoot is a dietary supplement by Herbal Terra with 2 active ingredients. Its ingredients are commonly taken for coughs and chest congestion, sore throat and hoarseness, bronchitis and respiratory complaints.Based on those ingredients, 374 medications have a known interaction with it, the most serious rated moderate. The ingredients most likely to interact are Coltsfoot (Tussilago farfara) dried leaves, buds, and flowers extract. Use the checker below to test your specific medication, or read the full HelloPharmacist Interaction Report.

Jump to a section

Check Your Meds Against Lungwort and Coltsfoot by Herbal Terra

Ask about any prescription or over-the-counter medication and we check it for interactions with Lungwort and Coltsfoot by Herbal Terra — and tell you which ingredient is responsible.

Pharmacist-reviewed data Checks every ingredient Answer in seconds
Prefer a human? Send your question to our licensed pharmacists — free, answered by email within 24 hours.

HelloPharmacist Scorecard of Lungwort and Coltsfoot by Herbal Terra

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

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 Herbal Extracts Blend” is a proprietary blend — the label gives one combined amount (970 mg) without saying how much of each component you get.

This liquid contains 2 active herbal ingredients: Lungwort (Pulmonaria officinalis) and Coltsfoot (Tussilago farfara), both supplied as dried leaf extracts. The only other ingredient listed is Menstruum, which is the liquid used to extract and preserve the herbs.

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

The label doesn't state a purpose we can grade — see each ingredient's own graded uses on its monograph instead.

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 either Lungwort or Coltsfoot in our records. The evidence supporting their use hasn't been established in the research we have on file.

The evidence, ingredient by ingredient Lungwort Coltsfoot

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 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.

Coltsfoot carries a serious safety concern: it contains pyrrolizidine alkaloids, compounds that can injure your liver and lungs with chronic use. Some exposure to these alkaloids has been linked to a condition called veno-occlusive disease, which causes abdominal pain, vomiting, diarrhea, and persistent liver enlargement.

Lungwort is generally used in small amounts as a tea historically but hasn't been well studied for safety in modern research. The product advises against use during pregnancy and while breastfeeding due to insufficient safety data and the potential for toxic alkaloid exposure.

If you are pregnant, planning pregnancy, or breastfeeding, talk with your pharmacist or doctor before considering this product.

Side effects, ingredient by ingredient Lungwort Coltsfoot

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 2 matched ingredients can interact with medications — Coltsfoot.
  • The most serious interaction on file is rated Moderate.
  • Some involve high-stakes drug classes: anticoagulant / antiplatelet drugs.
  • For scale: 375 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 if you take blood thinners (anticoagulants or antiplatelet drugs like warfarin, aspirin, clopidogrel, or heparin), blood pressure medications (antihypertensives), or drugs that speed up liver metabolism (such as carbamazepine, phenobarbital, phenytoin, or rifampin). Use the search tool on this page to look up each one.

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.

This product combines two botanicals with minimal modern safety research. Coltsfoot poses real risks—liver and lung damage from its alkaloid content, and interactions with blood thinners and blood pressure drugs.

If you take any prescription medications, especially anticoagulants, antiplatelet agents, or blood pressure drugs, check with us before use. Pregnant and breastfeeding people should avoid it.

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 Sep 25, 2020.

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 Lungwort and Coltsfoot, straight from the product label.

Brand Herbal Terra
Barcode (UPC) 606595908624
Net contents 4 Fluid Ounce(s); 120 mL
Market status On market
Date entered into DSLD Sep 25, 2020
DSLD ID 235193
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other, Structure/Function
Intended target group(s) Adult (18 - 50 Years), Organic, 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 Lungwort and Coltsfoot by Herbal Terra, 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 mL
Maximum serving Sizes:
1 mL
Servings per container
120
UPC/BARCODE
606595908624
IngredientAmount% DV
Proprietary Herbal Extracts Blend970 mg--
certified organic Lungwort (Pulmonaria officinalis) dried leaves extract0 NP--
Coltsfoot (Tussilago farfara) dried leaves, buds, and flowers extract0 NP--

Other ingredients: Menstruum

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

Direction Shake well before use. Adults take up to 30 drops (1 mL, one full squeeze of the dropper bulb) in 3-4 fl. oz of juice or water up to 4 times a day. We recommend to seek expert medical advice before taking this or any other herbal supplements.

FDA Disclaimer Statement

Notice This product has not been evaluated by the FDA and is not intended to diagnose, treat, cure, or prevent any disease.

Formulation

Manufactured in the USA in an FDA registered facility

Alcohol free

Dried herb/menstruum ratio: 1:3 Expertly extracted Laboratory tested 330 mg/1 mL Premium product Alcohol-free liquid herbal extract

Non GMO

No artificial ingredients, GMO, gluten, color additives, fillers, preservatives or binders. Natural Gluten Free

Precautions

Caution May have contraindications.

Do not use if you are allergic to any ingredients.

Consult a physician before using during pregnancy, if nursing, or if you are on any medications.

Keep out of the reach of children.

Storage

Store in a cool, dry, dark place.

FDA Statement of Identity

Herbal Supplement

Seals/Symbols

Made in USA FDA registered facility Natural Gluten Free 100% Natural Guaranteed

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

See for yourself

Lungwort and Coltsfoot by Herbal Terra label

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

Lungwort and Coltsfoot 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 Lungwort and Coltsfoot by Herbal Terra

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

Serving size1 mL Dosage formLiquid Servings per container120 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.

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

Interaction report

Lungwort and Coltsfoot by Herbal Terra Drug Interactions

Want to check YOUR meds against Lungwort and Coltsfoot?

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
374Drugs
374 Moderate

Ingredients driving the most interactions

Coltsfoot (Tussilago farfara) dried leaves, buds, and flowers extract 374

Individual Drug Interactions

The ingredients in Lungwort and Coltsfoot interact with 374 drugs. Click any drug to see the details.

1 of the 2 ingredients in Lungwort and Coltsfoot interact with drugs. Each result below shows which ingredient is responsible. Coltsfoot (Tussilago farfara) dried leaves, buds, and flowers extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Lungwort and Coltsfoot 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.

Coltsfoot (Tussilago farfara) dried leaves, buds, and flowers extract3 drug types · 374 drugs

Anticoagulant/Antiplatelet Drugs

Concomitant use might increase the risk of bleeding due to decreased platelet aggregation. Coltsfoot has been reported to inhibit platelet aggregation; avoid concomitant use. Some of these drugs include aspirin, clopidogrel (Plavix), dalteparin (Fragmin), enoxaparin (Lovenox), heparin, ticlopidine (Ticlid), warfarin (Coumadin), and others.

Likelihood Possible Evidence D
Antihypertensive Drugs

Theoretically, excessive doses of coltsfoot may interfere with antihypertensive or cardiovascular therapy.

Likelihood Possible Evidence D
Cytochrome P450 3A4 (Cyp3A4) Inducers

Hepatotoxic pyrrolizidine alkaloids (PA) are substrates of cytochrome P450 3A4 (CYP3A4). Theoretically, drugs that induce CYP3A4 might increase the conversion of PAs to toxic metabolites. Some drugs that induce CYP3A4 include carbamazepine (Tegretol), phenobarbital, phenytoin (Dilantin), rifampin, rifabutin (Mycobutin), and others.

Likelihood Possible Evidence D
Coltsfoot (Tussilago farfara) dried leaves, buds, and flowers extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Lungwort and Coltsfoot, from the product label.

Herbal Terra

See all Herbal Terra products
Name
Herbal Terra
Pharmacist Counseling Corner

Lungwort and Coltsfoot by Herbal Terra: Common Questions

Does Lungwort and Coltsfoot by Herbal Terra interact with any medications?
Yes. Based on its ingredients, Lungwort and Coltsfoot has a known interaction with 374 medications. Use the checker to see how it interacts with a specific drug.
How can one product interact with so many drugs?
Lungwort and Coltsfoot 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.
What's the main safety issue with Coltsfoot in this product?
Coltsfoot contains liver-toxic pyrrolizidine alkaloids that can cause liver and lung damage, especially with long-term use. Chronic exposure has been linked to a serious liver condition called veno-occlusive disease. The product label recommends using only certified PA-free Coltsfoot products, if you use it at all.
Is this safe to take while pregnant or breastfeeding?
No. Both Lungwort and Coltsfoot should be avoided during pregnancy and while breastfeeding due to insufficient safety data. Coltsfoot's toxic alkaloids may pass into breast milk and harm your baby. Talk with your pharmacist or doctor if you're considering any herbal supplement during pregnancy or lactation.
Does Lungwort interact with medications?
We have no documented interactions for Lungwort in our records. However, it hasn't been thoroughly studied for safety in modern research, so check with your pharmacist about any concerns with your specific medications.
Can I take this with blood thinners like warfarin?
Coltsfoot in this product may increase bleeding risk if you're on blood thinners or antiplatelet drugs like warfarin, aspirin, or clopidogrel. Do not use this product without talking to your pharmacist or doctor first if you take these medications.
What does Lungwort do in this product?
We don't have effectiveness data on file for Lungwort, so we can't tell you what it's intended to do in this formula. The research supporting its use hasn't been established in our records.

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

Not sure if Lungwort and Coltsfoot is safe with your meds?

Our pharmacists answer your medication & supplement questions — free.

Ask a pharmacist

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.

Lungwort and Coltsfoot label
Go deeper

The Full Monographs Behind Lungwort and Coltsfoot’s Ingredients

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

Herb & supplement monograph

Lungwort

Lungwort (Pulmonaria officinalis) is a traditional European herb long used as a tea for coughs and minor breathing complaints, named for its lung-shaped, spotted leaves. There is very little...

Read the full Lungwort monograph → Herb & supplement monograph

Coltsfoot

Interacts with 374 drugs

Coltsfoot is a traditional herb long used to soothe coughs and clear mucus, but solid human evidence for these uses is lacking. More importantly, the raw plant can contain liver-toxic pyrrol...

Read the full Coltsfoot monograph →
Sources

Sources & How We Checked

Lungwort and Coltsfoot'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 9 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.

Lungwort 1 reference
  1. Pyrrolizidine Alkaloids — NIH LiverTox Source

See these in context on the Lungwort monograph →

Coltsfoot 8 references
  1. Roulet M, Laurini R, Rivier L, Calame A. Hepatic veno-occlusive disease in newborn infant of a woman drinking herbal tea. J Pediatr 1988;112:433-6. PubMed
  2. WHO working group. Pyrrolizidine alkaloids. Environmental Health Criteria, 80. WHO: Geneva, 1988.
  3. Chojkier M. Hepatic sinusoidal-obstruction syndrome: toxicity of pyrrolizidine alkaloids. J Hepatol 2003;39:437-46. PubMed
  4. Roeder E. Medicinal plants in Europe containing pyrrolizidine alkaloids. Pharmazie 1995;50:83-98.
  5. Wilson BE, Hobbs WN. Case report: pseudoephedrine-associated thyroid storm: thyroid hormone-catecholamine interactions. Am J Med Sci 1993;306:317-9. PubMed
  6. Wang YP, Yan J, Fu PP, Chou MW. Human liver microsomal reduction of pyrrolizidine alkaloid N-oxides to form the corresponding carcinogenic parent alkaloid. Toxicol Lett 2005;155:411-20. PubMed
  7. Hwang SB, Chang MN, Garcia ML, et al. L-652,469--a dual receptor antagonist of platelet activating factor and dihydropyridines from Tussilago farfara L. Eur J Pharmacol 1987;141:269-81. PubMed
  8. Freshour JE, Odle B, Rikhye S, Stewart DW. Coltsfoot as a potential cause of deep vein thrombosis and pulmonary embolism in a patient also consuming kava and blue vervain. J Diet Suppl 2012;9:149-54. PubMed

See these in context on the Coltsfoot 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

Keep exploring
Supplement interaction checker › Check any supplement or product against your medications Drug–drug interactions › Check two or more of your medications against each other Browse medications A–Z › Every drug we've checked against herbs & supplements NDC & pricing lookup › Find a drug’s NDCs, packaging and costs Ask a pharmacist › Free, personal answer from our licensed team