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Medicinal Herb Monographs

 

Verbascum thapsus
(Mullein)
Verbascum

Verbascum thapsus
(Mullein)

The information on this page compiled by
Beth Burch N.D.

Index
(click on the keywords)

Description

Mullein is a bi-annual. The first year the plant grows a roset of leaves that are 6 to 8 inches long and covered with fuzzy hairs which make them feel thick to the touch. The second year of growth it sends up a stalk that is 4 to 5 feet tall. The leaves grow alternately up the stalk and get smaller as they near the top. A spike of flowers grows on the top. The suphur-yellow flowers, nearly an inch across, are formed of four or five petals that unite at the base to form a short tube.
 
 


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Constituents

  • Polysaccharides
  • Iridoid glycosides, including harpagoside, harpagide and aucubin (especially in the leaf)
  • Flavonoids, including 3'-methylquercitin, hesperidin and verbascoside
  • Saponins
  • Volatile oil


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Indications

  • Preparations from the flowers-
    • Paroxysmal laryngeal cough
    • Chronic bronchitis
    • Hay fever, asthma
    • Earache
  • Preparations from the leaf-
    • Rheumatic complaints including rheumatoid arthritis, neuralgia, headaches


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Action/Effects

  • Demulcent, Emollient- the polysaccharide mucilage and gums soothe irritated tissues
  • Expectorant- saponins stimulate fluid production
  • Anti-inflammatory- iridoid glycosides and flavonoids decrease inflammation
  • Mild Diuretic
  • Anti-viral


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Recommended Dosage

  • German Commission E monograph recommends 3-4 grams of dried mullein flowers made into a tea.
  • 4 ml of a 1:4 extract of flowers or leaf


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Side Effects

  • None known


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Contraindications

  • None known


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Use with prescription medications

  • No known interactions

    •  


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Use in pregnancy & lactation

  • No adverse effects reported


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Summary of Scientific Studies

  • Mullein flower extracts inhibit the growth of influenza viruses by stimulating interferon-like activity


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* The information presented in this web site is intended to inform and educate. It is not intended replace a qualified medical practitioner to diagnose or treat medical conditions.

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