Evidence-based·Last reviewed May 30, 2026·How we grade evidence

Mullein

BotanicalLeaf and flower

Useful mainly for people seeking traditional soothing relief for a dry, irritated cough or sore throat.

Quick decision guide

May help most

people seeking traditional soothing relief for a dry, irritated cough or sore throat

Common dosing range

3–4 g/day dried leaf or flower as an infusion

When to expect effects

Hours (soothing, symptomatic)

Watch out for

Filter teas through fine cloth to remove leaf hairs; never put ear oil in a perforated eardrum

What is it

Common mullein ( Verbascum thapsus ) is a biennial herb naturalised across much of Europe, Asia, and North America, with characteristic rosettes of soft woolly leaves and tall flowering spikes of yellow flowers. Its leaves, flowers, and roots have a long ethnobotanical history of use for respiratory complaints, otitis (as a flower-infused oil), and topical inflammation. The plant contains iridoid glycosides (aucubin, catalpol), saponins, flavonoids (verbascoside, hesperidin), mucilage polysaccharides, and small amounts of essential oils. Mucilage gives mullein its soothing, demulcent character on irritated mucous membranes, while iridoids and verbascoside provide some pharmacologically plausible anti-inflammatory and antiviral activity.

Is it worth it for you?

Use this as a quick fit check, not a diagnosis.

Worth considering if…

You want a gentle demulcent tea for a scratchy throat or dry cough
You prefer traditional herbal options with a long safety record
You accept the evidence is traditional, not trial-based

Probably skip if…

You expect proven treatment of any infection or disease
You want a standardized, dose-validated product
You have a possible perforated eardrum and want the ear oil

Evidence at a glance

antiviral activity

Mixed Evidence
Effect
In vitro only
Best fit
not applicable; laboratory observation only
Time
Not established

Evidence for 1 use

AI-assisted evidence assessment — talk to your doctor before relying on any single supplement.

antiviral activity

Mechanism only
Mixed Evidence

Mullein extracts show activity against influenza and herpes simplex viruses in cell-culture assays, attributed to verbascoside and iridoid constituents. No human studies show that oral or topical mullein affects viral infection, so this is mechanistic only.

Effect size
In vitro only
Time to effect
Not established
Best fit
not applicable; laboratory observation only

Bottom line: Antiviral effects are confined to the lab and do not support any clinical use.

SourceDiker et al., 2019 — PMC

How to take it

1. Typical dose
3–4 g/day dried leaf or flower (1–2 g per cup, 2–3 times daily), or 1–4 mL of a 1:5 tincture three times daily
2. Timing
As needed during symptoms
3. With food
Either; tea is taken between or with meals
4. How long to try
Short-term use during an acute respiratory episode

What to track

throat/cough comfort
any throat irritation from leaf hairs
skin reaction if applied topically

Safety

Know the common side effects, key cautions, and who should avoid it.

Common side effects

throat irritation from leaf hairs in unfiltered teauncommon allergic contact dermatitis

Who should avoid it

  • people with a perforated eardrum (ear oil)
  • anyone with known mullein allergy

Pregnancy & breastfeeding

Safety is not established; short-term oral leaf tea is traditionally considered low risk but routine use is not recommended without practitioner guidance.

Choosing a product

What to look for on the label — and what to be skeptical of.

Look for…

clearly identified species (Verbascum thapsus or V. densiflorum)
leaf or flower part specified
for ear oil, flower-infused oil with an intact-eardrum warning

Be skeptical of…

cures infections
treats COPD or asthma
proven antiviral

References by claim

antiviral activity

Diker et al., 2019 — PMC (2019) link

Track Mullein with Pilora

Set up dose reminders, check interactions, and join the community in the Pilora iPhone app.

Coming to App Store
Evidence-based·Last reviewed May 30, 2026·Evidence current as of May 30, 2026·How we grade evidence

Disclaimer: These statements have not been evaluated by the FDA. This page is educational, not a substitute for personalized medical advice. Evidence grades are AI-assisted assessments — talk to your doctor before starting any new supplement, especially if you’re pregnant, breastfeeding, on medications, or managing a chronic condition.