Herb

    Mullein

    TL;DR

    A traditional respiratory herb whose soothing mucilage makes it a reasonable choice for dry coughs and throat irritation, though formal clinical trials are nearly nonexistent.

    Ideal For

    • People with dry, irritating coughs or scratchy throats looking for a gentle traditional soothing remedy, especially as tea

    Avoid If

    • Pregnancy and breastfeeding — safety data absent
    • Persistent cough, asthma, or suspected infection — seek medical care instead

    Frequently Asked Questions

    Overview

    Mullein (Verbascum thapsus) has been used for centuries in European and North American folk medicine for coughs, bronchitis, and respiratory complaints. The leaves and flowers contain mucilage that coats irritated mucous membranes, saponins with mild expectorant activity, and flavonoids with anti-inflammatory properties. This phytochemistry provides a plausible basis for its traditional uses, and mullein is a common ingredient in European cough preparations approved under traditional-use frameworks. However, the modern clinical trial evidence is extremely limited — there are essentially no randomized controlled trials of mullein alone for any respiratory condition. Its reputation rests on traditional use, plausible mechanism, and a long safety record rather than rigorous proof of efficacy.

    How It Works

    • Mucilage forms a soothing coating over irritated throat and airway mucosa (demulcent effect)
    • Saponins act as mild expectorants, potentially helping loosen mucus
    • Flavonoids and verbascoside provide anti-inflammatory and antioxidant activity in vitro
    • Iridoid glycosides may contribute mild antiviral activity observed in laboratory studies

    Benefits & Outcomes

    No linked outcomes yet. Research is ongoing.

    Health Concerns Addressed

    Cough

    symptom
    Insufficient evidence
    Limited
    Effectiveness 3/5

    Mullein is a well-established traditional remedy for coughs, with soothing mucilage and mild expectorant saponins that plausibly explain its effects. It is approved for traditional use in European cough preparations, but no modern randomized trials of mullein alone exist.

    Supporting Research
    5 studies

    Efficacy of naturopathic extracts in the management of ear pain associated with acute otitis media

    Score: 5/10
    2001
    rct
    n=103

    Sarrell EM, Cohen HA, Kahan E

    Herbal ear drops containing mullein flower extract relieved ear pain as effectively as anaesthetic drops.

    View source

    Naturopathic treatment for ear pain in children

    Score: 5/10
    2003
    rct
    n=171

    Sarrell EM, Mandelberg A, Cohen HA

    Mullein-containing ear drops produced pain reduction comparable or superior to anaesthetic drops over three days.

    View source

    Assessment report on Verbascum thapsus L., flos

    Score: 6/10
    2018
    systematic_review

    European Medicines Agency Committee on Herbal Medicinal Products

    Mullein flower qualifies only for traditional-use registration for catarrh-related cough; no efficacy trials were identified.

    View source

    Herbal medicines for the treatment of acute cough: a systematic review of randomised controlled trials

    Score: 6/10
    2015
    systematic_review

    Wagner L, Cramer H, Klose P

    Evidence for single herbal antitussives is limited to small or low-quality trials.

    View source

    Verbascum species: a review of phytochemistry and pharmacological activity

    Score: 4/10
    2013
    systematic_review

    Riaz M, Zia-Ul-Haq M, Jaafar HZE

    Verbascum species contain mucilage, saponins and iridoids with antimicrobial and anti-inflammatory activity in vitro.

    View source

    Safety Information

    Potential Side Effects

    {"Fine leaf hairs can irritate the throat if tea is not strained properly","Rare contact dermatitis reported","No human clinical trial data to confirm efficacy"}

    Drug Interactions

    • No well-documented drug interactions; mucilage could theoretically slow absorption of oral medications — separate by 1-2 hours

    Pregnancy & Breastfeeding

    Pregnancy: insufficient_data

    Breastfeeding: insufficient_data

    Dosage Guidelines

    Dosage Used in Studies

    Consult healthcare provider

    Forms Compared

    Traditional form; strain well to remove fine leaf hairs that can irritate the throat

    Common in herbal practice; 2-4 mL up to three times daily

    Convenient but mucilage effect is best delivered as liquid

    Traditional use for ear discomfort, usually combined with garlic oil

    Medical Disclaimer

    The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.

    Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.