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Omnia Sana · Plant Monograph

Horehound

Marrubium vulgare

Family LamiaceaeParts used Aerial parts (flowering herb)Also known as White horehound, Common horehound

This monograph compiles 3 documented constituents, 4 pharmacological actions, 9 traditional / indicated uses, supported by 13 cited sources, drawn directly from the Omnia Sana plant database.

Key Constituents

Labdane diterpene marrubiin[11, 12, 13]

The characteristic bitter principle (pharmacopoeial material contains at least 0.7%); drives the expectorant and digestive actions. A phytochemical/pharmacological overview identifies marrubiin and the phenolic fraction as the basis for antioxidant, anti-inflammatory and antimicrobial activity.

Terpenes / terpenoids
Flavonoids and phenylethanoid esters (e.g. verbascoside)[11, 12]

Antioxidant and anti-inflammatory constituents.

Verbascoside (acteoside)Flavonoids
Tannins and volatile oil[12]

Astringent and aromatic constituents of the herb.

Essential (volatile) oilTannins

Pharmacological Actions

Antispasmodic[6, 12]

Antispasmodic (traditional use in whooping cough)

Bitter digestive tonic / stomachic[11]

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

Digestive aid[11]

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

Expectorant[2, 7, 11, 12]

Expectorant for productive cough and catarrh of the upper respiratory tract / bronchitis

Traditional & Indicated Uses

Loss of appetite[2, 11]Traditional · 1/10

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

more plants for loss of appetite →detailed sources →
Bloating[11]Traditional · 1/10

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

more plants for bloating →detailed sources →
Bronchitis[2, 7, 11, 12]Traditional · 2/10

Expectorant for productive cough and catarrh of the upper respiratory tract / bronchitis

more plants for bronchitis →detailed sources →
Cough[2, 11, 12]Traditional · 1/10

Antispasmodic (traditional use in whooping cough); Expectorant for productive cough and catarrh of the upper respiratory tract / bronchitis

more plants for cough →detailed sources →
Indigestion[2, 11]Traditional · 1/10

Bitter digestive for dyspeptic complaints (indigestion, bloating, flatulence) and loss of appetite

more plants for indigestion →detailed sources →
Menstrual cramps[12]Traditional · 1/10

inferred from antispasmodic action

more plants for menstrual cramps →detailed sources →
Muscle spasm[6, 12]Traditional · 2/10

inferred from antispasmodic action

more plants for muscle spasm →detailed sources →
Respiratory support[2, 7, 11, 12]Traditional · 2/10

inferred from expectorant action

more plants for respiratory support →detailed sources →
Sore throat[11, 12]Traditional · 1/10

Soothes sore throat (traditional)

more plants for sore throat →detailed sources →

Safety, Cautions & Contraindications

Safety note[11]Caution

As a strong bitter it may aggravate hyperacidity; theoretical caution in peptic ulcer. Large amounts have shown effects on heart rhythm and blood pressure in studies, so avoid excessive intake.

Safety note[11]Caution

Traditional use only; a cough or digestive complaint that persists needs medical assessment. Use in pregnancy and breastfeeding is not recommended.

References

REF-0920, REF-0921, REF-0922, REF-0923, REF-0924, REF-0925, REF-0926, REF-0927, REF-0928, REF-0929

References & Sources

  1. Lazarova, M.I., Tsvetanova, E.R., Georgieva, A.P., Stefanova, M.O. and others (2024) 'Marrubium vulgare Extract Improves Spatial Working Memory and Oxidative Stress Damage in Scopolamine-Treated Rats', Journal of Alzheimer's Disease, 99(s1), pp. S157-S169. doi:10.3233/JAD-231011 Preclinical
    https://doi.org/10.3233/JAD-231011
  2. Rodriguez Villanueva, J. and Martin Esteban, J (2016) 'An Insight into a Blockbuster Phytomedicine; Marrubium vulgare L. Herb. More of a Myth than a Reality?', Phytotherapy Research, 30(10), pp. 1551-1558. doi:10.1002/ptr.5661 Traditional / reference
    https://doi.org/10.1002/ptr.5661
  3. Acimovic, M., Ivanovic, S., Simic, K., Pezo, L. and others (2021) 'Chemical Characterization of Marrubium vulgare Volatiles from Serbia', Plants (Basel), 10(3), pp. 600. doi:10.3390/plants10030600 Preclinical
    https://doi.org/10.3390/plants10030600
  4. Amri, B., Martino, E., Vitulo, F., Corana, F. and others (2017) 'Marrubium vulgare L. Leave Extract: Phytochemical Composition, Antioxidant and Wound Healing Properties', Molecules, 22(11), pp. 1851. doi:10.3390/molecules22111851 Preclinical
    https://doi.org/10.3390/molecules22111851
  5. Lazarova, M., Stefanova, M., Denev, P., Taseva, T. and others (2024) 'Neuroprotective Effect of Marrubium vulgare Extract in Scopolamine-Induced Cognitive Impairment in Rats: Behavioral and Biochemical Approaches', Biology (Basel), 13(6), pp. 426. doi:10.3390/biology13060426 Preclinical
    https://doi.org/10.3390/biology13060426
  6. Aitbaba, A., Kabdy, H., Baslam, A., Azraida, H. and others (2024) 'Chemical Investigation and Antinociceptive Activity Evaluation of Marrubium vulgare L. Aqueous Extract', Chemistry & Biodiversity, 21(5), pp. e202400228. doi:10.1002/cbdv.202400228 Preclinical
    https://doi.org/10.1002/cbdv.202400228
  7. Abidi, A., Dhaouafi, J., Brinsi, C., Tounsi, H. and Sebai, H (2022) 'Tunisian Horehound (Marrubium vulgare) Aqueous Extract Improves Treatment of Bleomycin-Induced Lung Fibrosis in Rat', Dose-Response, 20(3), pp. 15593258221119300. doi:10.1177/15593258221119300 Preclinical
    https://doi.org/10.1177/15593258221119300
  8. Rezgui, M., Basma, M., Neng, N., Nogueira, J.M. and others (2021) 'Evaluation of Marrubium vulgare Growing Wild in Tunisia for Its Potential as a Dietary Supplement', Foods, 10(11), pp. 2864. doi:10.3390/foods10112864 Preclinical
    https://doi.org/10.3390/foods10112864
  9. Gourich, A.A., Touijer, H., Drioiche, A., Asbabou, A. and others (2023) 'Insight into biological activities of chemically characterized extract from Marrubium vulgare L. in vitro, in vivo and in silico approaches', Frontiers in Chemistry, 11, pp. 1238346. doi:10.3389/fchem.2023.1238346 Preclinical
    https://doi.org/10.3389/fchem.2023.1238346
  10. Yousefi, K., Hamedeyazdan, S., Torbati, M. and Fathiazad, F (2016) 'Chromatographic Fingerprint Analysis of Marrubiin in Marrubium vulgare L. via HPTLC Technique', Advanced Pharmaceutical Bulletin, 6(1), pp. 131-136. doi:10.15171/apb.2016.019 Preclinical
    https://doi.org/10.15171/apb.2016.019
  11. European Medicines Agency (HMPC) (2013) 'European Union herbal monograph on Marrubium vulgare L., herba (Marrubii herba)'. Available at: https://www.ema.europa.eu/en/medicines/herbal/marrubii-herba Traditional / reference
    https://www.ema.europa.eu/en/medicines/herbal/marrubii-herba
  12. ESCOP (European Scientific Cooperative on Phytotherapy) (n.d.) 'Marrubii herba (White Horehound) monograph', pp. com. Available at: https://www.escop.com/downloads/white-horehound/ Traditional / reference
    https://www.escop.com/downloads/white-horehound/
  13. Acimovic, M., Jeremic, K., Salaj, N., Gavaric, N., Kiprovski, B., Sikora, V. and Zeremski, T (2020) 'Marrubium vulgare L.: A Phytochemical and Pharmacological Overview', Molecules, 25(12). doi:10.3390/molecules25122898 Randomized trial
    https://doi.org/10.3390/molecules25122898

Record last updated 2026-06-20 · Provenance: website+pubmed+symptom-tool · Status: verified

This fact sheet is generated automatically from the Omnia Sana plant database and reflects its latest synced data. It is provided for educational purposes only and is not medical advice. Always consult a qualified practitioner before using medicinal plants.

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