Drug & supplement interaction

Mullein + Glycopyrrolate

Glycopyrrolate brand names: Robinul, Robinul Forte, Glycopyrrolate Injection, Seebri, Lonhala Magnair Kit, and others.

No Known Interaction
Medically reviewed by · Updated July 2026 · Pair last verified Sep 20, 2026
The bottom line No known interaction

We found no known interaction between Mullein and Glycopyrrolate in our sources. Absence of a documented interaction is not the same as proven safety, and does not guarantee one does not exist. Do not start, stop, or change a medication or supplement based on this page; confirm with your pharmacist or doctor first. Additionally, although there is no interaction, the two are separately associated with some of the same side effects, which would make a new symptom harder to attribute to one or the other.

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Interaction report

Mullein and Glycopyrrolate

We checked these two against our interaction database. Here is what we found.

No Known Interaction Found

We did not find a documented interaction between Glycopyrrolate and Mullein in our sources. This does not guarantee that the combination is completely free of risk — there is often limited research on supplements and herbal products, especially around drug interactions.

If you decide to take both, the practical routine is simple: add one new thing at a time and note the date you started it. If the combination is going to disagree with you, it usually shows in the first days to a couple of weeks — and a start date turns “I’ve been feeling off” into something a pharmacist can actually work with. Do not stop a prescribed medicine on your own.

Always talk with your pharmacist or doctor before making changes to your medications or supplements, particularly if you take several medications or have an ongoing health condition.

Mullein safety at a glance

Mullein overall Use caution Generally well tolerated for short-term use, but human safety data are limited.
Pregnancy Avoid Not enough safety information, so it is best avoided during pregnancy.
Breastfeeding Avoid There is not enough data to consider it safe while breastfeeding.

Safety guidance is general; always confirm with your pharmacist or doctor for your situation.

Still wondering about combining Glycopyrrolate and Mullein? Ask Dr. Brian Staiger, PharmD, BCPS directly ›
How we checked

Why No Interaction Is Listed for Glycopyrrolate

Interactions in our licensed database are recorded against drug classes, not just single drug names. Glycopyrrolate is filed under 2 classifications — anticholinergic drugs, oral drugs. Mullein has documented interactions with 1 drug class — the most serious being anticoagulant/antiplatelet drugs (minor) — and none of Glycopyrrolate’s classifications are among them.

Classification data comes from our licensed Natural Medicines dataset. A medication can belong to classes beyond those recorded there, so this describes how the check was run — it is not a safety guarantee.

Keep it in perspective

Mullein Does Interact With Other Medications

Mullein has 122 minor known drug interactions in our database — Glycopyrrolate isn’t one of them. If you take anything else, check it against the full list below.

Minor 122 No known interaction 2,708 (incl. Glycopyrrolate)
Taking anything else?

Check Another of Your Medications Against Mullein

Covers the 2,830 medications we’ve checked against Mullein. Pick one to open its full report.

What to actually watch for

No Interaction Found — But Data Suggests Mullein and Glycopyrrolate May Share a Side Effect

This is not an interaction. Neither one changes how your body handles the other, and nothing here says they react together. What our sources do show is that each has separately been linked to the effects below — so taking both can make those effects more likely to turn up, and harder to pin on one or the other if they do.

  • A skin rash Additional detail

    Mullein

    “Two case reports have described dermatitis, with positive patch tests, after topical exposure to the whole plant, or by occupational inhalation of plant dust. In the case of topical exposure, the patient also had positive patch tests to other plants.”

    Mullein · Natural Medicines adverse-effect record, reported in dermatitis.

    2 sources cited
    1. 92839. Castro AI, Carmona JB, Gonzales FG, Nestar OB. Occupational airborne dermatitis from gordolobo (Verbascum densiflorum). Contact Dermatitis 2006;55(5):301.
    2. 97316. 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.

    Glycopyrrolate

    Listed in the ADVERSE REACTIONS section of the FDA label for Glycopyrrolate. Read the label on DailyMed ›

Effects for Glycopyrrolate come from the ADVERSE REACTIONS section of its FDA label; effects for Mullein come from the Natural Medicines adverse-effect record, quoted above. Where a percentage is shown, it is the share of 19,422 voluntary FDA FAERS reports for Glycopyrrolate that mention that effect — a reporting proportion, not an incidence rate and not evidence the drug caused it. Wording is matched across sources by our own clinical vocabulary, so treat this as a prompt to pay attention, not a diagnosis.

From our Q&A

Questions About Mullein or Glycopyrrolate

These are real questions from readers, answered by the pharmacists at HelloPharmacist — written by a person, not generated from a database. Each one covers Mullein or Glycopyrrolate, not necessarily both, but if one is close to what you were about to ask it will usually go further than a database entry can:

Not quite your question? Ask our pharmacists directly — it is free, there is no account required, and answers usually come back within 24 hours.

Everything else you take

See Every Supplement That Interacts With Glycopyrrolate

This page covers Mullein only. If you take other supplements — a multivitamin, a sleep aid, something for joints — the Glycopyrrolate page lists 46 supplements it has a documented interaction with, worst first, each one explained.

The most serious there right now: Activated Charcoal (major), Henbane (major), Scopolia (major), Angel's Trumpet (moderate) and Bacopa (moderate).

By severity: 3 major · 32 moderate · 11 minor.

From our pharmacist’s overview on the Glycopyrrolate page

“People take glycopyrrolate (Robinul, Seebri) to calm excessive sweating, drooling, or the airway secretions of COPD, and the 46 supplements on this list warrant real caution, the three rated major above all. Henbane and scopolia carry the same atropine-family alkaloids the drug mimics, so adding them can push dry mouth, racing heart, a…”

Reviewed by 2 · Jul 18, 2026

Open the Glycopyrrolate interaction page

One more smart check

Taking Mullein as Part of a Dietary Supplement Product? Check It for Interactions

We hold 780 real supplement products containing Mullein, each one broken down to its full ingredient list — and combination products often carry several ingredients besides Mullein. Even though Mullein itself has no known interaction with Glycopyrrolate, another ingredient on your label might. Find your product and we’ll check every ingredient on its label:

How much people look this up

Where Mullein and Glycopyrrolate Sit Against Everything Else

Out of every supplement and medication people look up on HelloPharmacist, here is where these two land this week — and which way each has been moving.

Supplement Mullein
Top 25%

#214 of 1,452 supplements looked up here in the last 7 days

29 days ago today
Medication Glycopyrrolate
Steady interest

#2,039 of 2,830 medications looked up here in the last 7 days

29 days ago today

Position among everything looked up on this site, not a measure of how commonly either one is used or how important it is. A supplement can climb this list because of a news story. It counts every request to the page, automated ones included, and nothing here identifies anyone.

Where does our data come from?
  • Source: the Natural Medicines (TRC Healthcare) clinical database — the evidence-graded professional reference for herb & supplement interactions.
  • Citation library: 103,510 references behind our interaction content, 65,311 of them resolved to verified PubMed/DOI sources. See every Mullein reference on this page ↓
  • Freshness: we automatically re-check this combination every week — this pair was last verified September 20, 2026. The Mullein and Glycopyrrolate records this page draws on were last updated July 10, 2026.
  • What “no known interaction” means: no documented interaction in the sources above — not a guarantee of safety. Supplements are studied far less than prescription drugs, so we say exactly what the evidence supports, and nothing more.
Data structure & sourcing designed and verified by .
Supplement

About Mullein

What is Mullein?

Mullein
  • Cough and chest congestion
  • Sore throat
  • Bronchitis and respiratory irritation
  • Earache (traditional ear oil)
  • Mild inflammation

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 are not well proven, but it is generally considered low-risk for short-term use in healthy adults. Talk to your pharmacist or doctor before using it, especially if you are pregnant, breastfeeding, or have a medical condition.

Verbascum thapsus · Scrophulariaceae · Leaves and flowers (sometimes roots) · Tea (infusion), tincture, capsules, syrups, lozenges, and ear oil drops

An interaction check asks whether these two react with each other — it does not ask whether Mullein is a good idea for someone in your situation. Here is what our Mullein record says about it on its own.

Mullein: dosing

There is no official or standardized dose for mullein. The amount used varies widely between products and traditional recipes, such as teas, tinctures, capsules, and syrups.The safest approach is to follow the directions on the product label and not exceed the recommended amount. A well-made tea is typically prepared by steeping the dried leaves or flowers in hot water and straining well to remove the irritating plant hairs.

From our Mullein monograph — the full record covers uses, side effects and every documented interaction.

Read the full Mullein monograph & all interactions
Medication

About Glycopyrronium Topical

What Is Glycopyrronium Topical Used For?

Brand names: Robinul, Robinul Forte, Glycopyrrolate Injection, Seebri, Lonhala Magnair Kit, Glyrx-Pf, Dartisla ODT

Qbrexza (glycopyrronium) cloth is used to treat primary axillary hyperhidrosis — a condition where the underarms sweat excessively without a clear medical cause. It is approved for adults and children as young as 9 years old.

Qbrexza is applied directly to the underarm skin and is not approved for sweating on other parts of the body.

Most-Reported Side Effects for Glycopyrrolate

From FAERS, the FDA’s public side-effect reporting system (19,422 reports, all brands). Reports are voluntary and are not proof the drug caused the effect.

Dyspnea 3,566 reports
Cough 1,693 reports
Device delivery system issue 1,666 reports
Asthma 1,478 reports
Wrong technique in device usage process 1,317 reports
See full Glycopyrronium Topical drug information
Keep checking

Other Drugs & Mullein

Browse every other medication we’ve checked against Mullein — both the ones with a known interaction and the ones without. Select any drug for the full detail.

0Major
0Moderate
122Minor
2,707No known interaction
122 Minor 2,707 No interaction
Minor

122 interactions

Showing 60 of 122 minor interactions — see all 122 on the Mullein page.

No interaction 2,707 drugs checked — show the list

We also checked Mullein against these medications and found no known interaction in our sources. Open any page to confirm.

Showing the 60 most looked-up of 2,707 medications checked with no known interaction — see the full Mullein list.

See the full Mullein interactions page
See every supplement checked against Glycopyrrolate, ranked by severity
Evidence & sources

Mullein References

The 2 references that drive our Mullein monograph and interaction data, from the evidence-graded Natural Medicines (TRC Healthcare) database. Citations with a link open the study on PubMed or the publisher’s site.

  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.

Medication overviews come from MedlinePlus (NIH); supplement label data from the NIH Dietary Supplement Label Database. Content is written and reviewed by licensed HelloPharmacist pharmacists — see our data sources and editorial standards.

Pharmacist Counseling Corner

Taking Mullein and Glycopyrrolate Together: Common Questions

Is it safe to take Mullein with Glycopyrrolate?
We do not list a known interaction between Mullein and Glycopyrrolate. That does not guarantee the combination is risk-free, so confirm with your pharmacist or doctor — especially if you take other medications or have a health condition.
Do Mullein and Glycopyrrolate have any of the same side effects?
Yes — our sources link each of them separately to one of the same effects. That is not an interaction: neither changes how your body handles the other. It does mean that if one of those effects turns up, it can be harder to tell which one is behind it. They are listed on this page with the source behind each.
How was the Mullein and Glycopyrrolate combination checked?
Interactions in our licensed database are recorded against drug classes. Glycopyrrolate is filed under 2 classifications, and Mullein has documented interactions with 1 drug class — none of Glycopyrrolate's classifications are among them. A medication can belong to classes beyond those recorded in our dataset, so this describes how the check was run rather than guaranteeing safety.
Does Mullein interact with any other medications?
Yes. Mullein has 122 documented drug interactions in our database — Glycopyrrolate is simply not one of them. If you take anything else, it is worth checking each one; they are all listed on this page.
Does Glycopyrrolate interact with any supplements?
Yes. Glycopyrrolate has documented interactions with 46 supplements in our database — Mullein is not one of them. The Glycopyrrolate interaction page linked on this page lists every one, ranked by severity.

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

Where next

Keep Exploring

Mullein monograph Uses, safety profile, and every drug interaction in one place Glycopyrronium Topical drug information The full plain-English guide to this medication Glycopyrrolate supplement interactions Every supplement checked against Glycopyrrolate, ranked by severity Supplement interaction checker Check any supplement or product against your medications Browse medications A–Z Every drug we’ve checked against herbs & supplements References The 2 citations behind this page Ask a pharmacist Free, personal answer from our licensed team

Still Have a Question About Glycopyrrolate and Mullein?

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This information is for education only and is not a substitute for professional medical advice. Always check with your pharmacist or doctor before starting, stopping, or combining supplements and medications.