Interactions on record — worth a quick check against your medications. Based on 1 of 3 ingredients. Check your meds →
Dietary supplement

Certified Organic Mullein Leaf Ingredients & Drug Interactions

by Gaia Organics

Certified Organic Mullein Leaf label
See full label image
Liquid Category: Botanical
Most serious interaction: Minor
Clinical methodology reviewed by · Updated Sep 16, 2026 · Label data from the NIH DSLD
What is this page for?

First and foremost: checking Certified Organic Mullein Leaf 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: Minor

Certified Organic Mullein Leaf is a dietary supplement by Gaia Organics with 3 active ingredients. Its ingredients are commonly taken for cough and chest congestion, sore throat, bronchitis and respiratory irritation.Based on those ingredients, 122 medications have a known interaction with it, the most serious rated minor. The ingredients most likely to interact are organic Mullein leaf 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 Certified Organic Mullein Leaf by Gaia Organics

Ask about any prescription or over-the-counter medication and we check it for interactions with Certified Organic Mullein Leaf by Gaia Organics — and tell you which ingredient is responsible.

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HelloPharmacist Scorecard of Certified Organic Mullein Leaf by Gaia Organics

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

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 3 active ingredients.

This product contains one active ingredient: organic mullein leaf extract. Mullein is a plant used traditionally for respiratory and other purposes.

The formula also includes water and organic grain alcohol as inactive ingredients that carry the extract.

Does it work?

Not established
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 established

The graded evidence we hold for these ingredients covers different conditions than the ones this product is marketed for, so there's no established rating for its stated use — see Mullein's own graded uses on its monograph.

Why this rating?
  • The label markets this product for: respiratory health support.
  • We looked for evidence on: Asthma, Bronchitis, Cough, Influenza, Pneumonia, chest congestion — and 2 related terms.
  • The closest evidence on file: Mullein is rated "Insufficient Reliable Evidence To Rate" for Bronchitis (Natural Medicines).
  • Also on file: Mullein is rated "Insufficient Reliable Evidence To Rate" for Asthma, Cough, Influenza, Pneumonia.

The evidence we hold doesn't establish that mullein works reliably for any condition. Studies have given insufficient evidence to rate its effectiveness for cough, bronchitis, asthma, migraine headache, or diarrhea.

If you're considering mullein for a specific health concern, talk it over with your doctor or pharmacist about what the current science actually supports.

The evidence, ingredient by ingredient Mullein

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.

Mullein leaf extract is generally well tolerated for short-term use, though human safety data are limited. The safety data advise against use during pregnancy and while breastfeeding due to lack of information.

A small number of case reports have described dermatitis (skin irritation) after touching the whole plant or inhaling plant dust, though those patients also reacted to other plants.

Side effects, ingredient by ingredient Mullein

Meds to double-check

Minor interactions only
Known Interaction Concern · database check
Minor only

Only Minor-severity interactions are documented for these ingredients.

Why this rating?
  • 1 of the 1 matched ingredient can interact with medications — Mullein.
  • The most serious interaction on file is rated Minor.
  • 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 (anticoagulants) or antiplatelet drugs, double-check with your doctor or pharmacist before starting this product. Mullein leaf extract has mild blood-thinning effects in lab studies, and combining them could affect how your medication works.

Check your own medication Run your meds through the checker above

The bottom line

Scorecard at a glanceFormula with limited ingredient disclosure with no established evidence rating for its marketed use. Only minor medication interactions are documented, and safety information is well characterized.

Mullein leaf extract is generally well tolerated in the short term, but the evidence for what it actually treats isn't solid yet. It does have a mild blood-thinning effect, so if you take blood thinners or antiplatelet drugs, you'll want to check with your doctor or pharmacist first.

Pregnant or breastfeeding? The safety data suggest avoiding it — talk to your doctor about safer options.

Educational only — not medical advice; always confirm with your pharmacist. Our editorial policy · How we use AI

Assessment coverage: 1 of 3 active ingredients matched to our full ingredient reviews (monographs). Based on the product label dated Dec 21, 2012.

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 Certified Organic Mullein Leaf, straight from the product label.

Brand Gaia Organics
Barcode (UPC) 751063307802
Net contents 1 fl. Oz.; 30 mL
Market status On market
Date entered into DSLD Dec 21, 2012
DSLD ID 16298
Product type Botanical
Supplement form Liquid
Dietary claims / uses All Other
Intended target group(s) Adult (18 - 50 Years), Organic
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 Certified Organic Mullein Leaf by Gaia Organics, 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:
1.33 mL
Servings per container
30
UPC/BARCODE
751063307802
IngredientAmount% DV
Water0 NP--
organic Grain Alcohol0 NP--
organic Mullein leaf extract0 NP--

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

Suggested Use Take 30-40 drops of extract in a small amount of water 3-4 times daily between meals. Shake well before using.

Precautions

Not to be used during pregnancy or lactation. If you have a medical condition or take pharmaceutical drugs, please consult with your doctor before use.

Keep away from children.

Use only as directed on label. Safety sealed for your protection.

General Statements

Liquid Herbal Extract

333 mg/ml herb equivalency

Formulation

CERTIFIED ORGANIC

Certified Organic by Oregon Tilth

Seals/Symbols

USDA ORGANIC

FDA Statement of Identity

DIETARY SUPPLEMENT

General

[03] 1201-0910

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

See for yourself

Certified Organic Mullein Leaf by Gaia Organics label

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

Certified Organic Mullein Leaf 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 Certified Organic Mullein Leaf by Gaia Organics

These are the 3 active ingredients this product is made of. Select any to open its full monograph.

Serving size1 mL Dosage formLiquid Servings per container30 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.

Water

0 NP per serving

Organic Grain Alcohol

0 NP per serving

Organic Mullein leaf extract

Interacts with
122 drugs
0 NP per serving

Mullein is a traditional herbal remedy most often used as a tea or syrup to soothe coughs, sore throats, and respiratory irritation. High-quality huma...

Organic Mullein leaf extract monograph & interactions
Interaction report

Certified Organic Mullein Leaf by Gaia Organics Drug Interactions

Want to check YOUR meds against Certified Organic Mullein Leaf?

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 Minor

Ingredients driving the most interactions

organic Mullein leaf extract 122

Individual Drug Interactions

The ingredients in Certified Organic Mullein Leaf interact with 122 drugs. Click any drug to see the details.

1 of the 3 ingredients in Certified Organic Mullein Leaf interact with drugs. Each result below shows which ingredient is responsible. organic Mullein leaf extract

Each ingredient & the kinds of drugs it affects

For each ingredient in Certified Organic Mullein Leaf 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.

organic Mullein leaf extract1 drug type · 122 drugs

Anticoagulant/Antiplatelet Drugs

Lab tests on extracts from different parts of common and dense-flowered mullein plants show that they do have some blood-thinning effects, as they increase the time it takes for blood to clot. This is likely due to at least one of the known constituents of muellein, triterpenoid saponins. However, the effects appear to be mild and results have been inconsistent. Extracts from different plant parts have been show to have varying anticoagulant strengths, with water-based ones being more potent than alcohol-based extracts.

Likelihood Unlikely Evidence A
organic Mullein leaf extract full monograph & interactions
The maker

Brand information

Manufacturer and brand details for Certified Organic Mullein Leaf, from the product label.

Gaia Organics

See all Gaia Organics products
Web Address
GaiaHerbs.com
Pharmacist Counseling Corner

Certified Organic Mullein Leaf by Gaia Organics: Common Questions

Does Certified Organic Mullein Leaf by Gaia Organics interact with any medications?
Yes. Based on its ingredients, Certified Organic Mullein Leaf 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?
Certified Organic Mullein Leaf contains 3 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.
Can I take this while I'm pregnant or breastfeeding?
No. The safety data advise against mullein during pregnancy and while breastfeeding because there isn't enough information to know it's safe. Talk with your doctor or pharmacist about what alternatives might work better for you.
What is mullein leaf used for?
Mullein is traditionally used for respiratory and other purposes, but the evidence we hold doesn't reliably support its effectiveness for cough, bronchitis, asthma, migraine, or diarrhea. If you want to know whether it might help with something specific, ask your doctor.
Are there any side effects I should know about?
Mullein is generally well tolerated, though human safety data are limited. A small number of case reports have described skin irritation after direct contact with the whole plant or inhaling plant dust. If you notice any rash or irritation, stop and talk to your pharmacist.
I take a blood thinner. Can I use this?
Mullein leaf extract has mild blood-thinning effects in lab studies, so it could interact with your blood thinner or antiplatelet medication. Check with your doctor or pharmacist before starting — they can review your exact drug and advise you.
Is this the same as mullein tea?
This is a concentrated extract in liquid form, whereas mullein tea is a steeped brew. The product facts don't detail how they compare, so if you're choosing between the two, ask your pharmacist for guidance on what might work best for you.

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

Not sure if Certified Organic Mullein Leaf 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.

Certified Organic Mullein Leaf label
Go deeper

The Full Monographs Behind Certified Organic Mullein Leaf’s Ingredients

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

Herb & supplement monograph

Mullein

Interacts with 122 drugs

Mullein is a traditional herbal remedy most often used as a tea or syrup to soothe coughs, sore throats, and respiratory irritation. High-quality human studies are lacking, so its benefits a...

Read the full Mullein monograph →
Sources

Sources & How We Checked

Certified Organic Mullein Leaf'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 2 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.

Mullein 2 references
  1. Castro AI, Carmona JB, Gonzales FG, Nestar OB. Occupational airborne dermatitis from gordolobo (Verbascum densiflorum). Contact Dermatitis 2006;55(5):301.
  2. Flores Echaiz C, Al Ali A, Cao AQ, Sasseville D. Simultaneous contact dermatitis caused by Asteraceae and Verbascum thapsus. Contact Dermatitis 2017;76(5):316-8.

See these in context on the Mullein 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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