Educational reference only · Not medical advice
Botanical illustration of Mullein

Verbascum thapsus

Mullein

Scrophulariaceae

Evidence: LimitedCaffeine Free EuropeSafety information on file
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At a Glance

Common name
Mullein
Scientific name
Verbascum thapsus
Family
Scrophulariaceae
Region
Europe
Plant part
Leaves, Flowers
Caffeine
Caffeine Free
Evidence
Limited
Safety review
Safety information on file

Safety & Cautions

Safety information on file
Contraindications
Fine leaf hairs may irritate the throat — strain tea through fine cloth.
Drug interactions
No major interactions known for tea amounts.
Pregnancy
Insufficient data; avoid medicinal doses.
Children
Gentle tea traditional; avoid ear oil without supervision.
Allergies
Rare.
Known adverse effects
Generally well tolerated; unstrained leaf hairs can irritate.

Botanical Description

A biennial forming a basal rosette of large, thick, soft grey-green velvety leaves in the first year, and in the second a tall (1–2 m) spike of small yellow flowers. The leaves and flowers are used.

Also known as: Great Mullein, Candlewick, Lungwort

Historical Background

Mullein has been a European respiratory herb since antiquity — used for coughs, asthma, and chest complaints, and as 'candlewick' (the felted leaves and dried stalks). It reached North America with colonists and was widely adopted for cough and ear oils.

Earliest recorded uses: Dioscorides; European folk medicine for chest and skin complaints.

Cultural significance: Mullein's tall flower stalks were dipped in tallow as torches and its felted leaves as lamp wicks and shoe insoles — a plant of the hearth and the chest in equal measure.

Traditional preparations:

  • Leaf/flower infusion
  • Mullein flower oil (topical)
  • Steam

Traditional Uses

These uses document historical traditions and do not imply proven effectiveness.

Traditional European Herbalism

Leaf and flower tea for chesty cough and hoarseness.

Modern Herbalism

Flower oil for earaches (topical); tea for respiratory comfort.

Flavor & Aroma

MildSlightly BitterHerbaceous

Aroma: Faint, sweet, herbaceous

Tea Preparation

Preparation methods
Infusion, Steam
Steeping temperature
200°F (93°C)
Steeping time
5–10 minutes (covered)
Recommended vessel
Covered teapot (fine strain to remove leaf hairs)
Blends well with
Marshmallow Root, Thyme, Licorice Root, Honey
200°F (93°C) 5–10 minutes (covered)

Modern Evidence

Evidence level: Limited

Mullein has a long respiratory tradition but very limited clinical evidence; most support comes from traditional use and in vitro observations. It is not a treatment for asthma, infection, or chronic lung disease.

Evidence levels describe the state of research for the traditional use discussed here, not a recommendation. Historical use does not imply effectiveness.

References & Sources

  1. EMA HMPC · Verbasci flos monograph (2018)
  2. MSKCC · Mullein — About Herbs (2023)

Entry last updated August 4, 2026

Soothing Brews

An educational encyclopedia preserving the history, traditions, and modern evidence behind herbs used in teas and infusions. Inspired by antique botanical manuscripts.

Steeped in tradition, grounded in honesty.

Please Note

This is an educational reference, not a medical resource. Historical use does not imply effectiveness. Natural does not always mean safe. Consult a qualified healthcare professional before using herbs, especially if pregnant, nursing, or taking medications.

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Preferred sources: NIH ODS · NCCIH · MSK Herbs · PubMed · WHO · EMA · German Commission E · Cochrane