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Omnia Sana · Plant Monograph

Pelargonium

Pelargonium sidoides

Family GeraniaceaeParts used Root (standardised extract EPs 7630)Also known as Umckaloabo, South African geranium, Black geranium

This monograph compiles 2 documented constituents, 2 pharmacological actions, 6 traditional / indicated uses, supported by 13 cited sources, drawn directly from the Omnia Sana plant database.

Key Constituents

Highly oxygenated coumarins (umckalin)[12]

Characteristic root constituents with antibacterial activity.

Coumarins
Polyphenols and proanthocyanidins (gallic acid derivatives)[12]

Contribute to the antiviral and immunomodulatory effects.

ProanthocyanidinsGallic acidPhenolic compounds

Pharmacological Actions

Antiviral[2, 3, 4, 5, 8, 9, 10, 11, 12]

Antiviral and immunomodulatory (mechanism of action)

Immunomodulator / immune support[1, 6, 7, 9, 12]

Antiviral and immunomodulatory (mechanism of action)

Traditional & Indicated Uses

Bronchitis[2, 5, 12]Good · 8/10

Acute bronchitis - reduces symptom severity and shortens illness

more plants for bronchitis →detailed sources →
Cold & flu[2]Good · 7/10

Common cold and acute respiratory tract infection

more plants for cold & flu →detailed sources →
Immune support[12]Traditional · 2/10

inferred from immunomodulator action

more plants for immune support →detailed sources →
Infection (general)[2]Good · 7/10

Common cold and acute respiratory tract infection

more plants for infection (general) →detailed sources →
Sinusitis[2, 13]Good · 8/10

Rhinosinusitis (sinusitis) support

more plants for sinusitis →detailed sources →
Sore throat[2]Good · 7/10

Sore throat / acute tonsillopharyngitis

more plants for sore throat →detailed sources →

Safety, Cautions & Contraindications

Safety note[2, 12]Info

Generally well tolerated; the main effects are mild gastrointestinal upset or, rarely, an allergic skin reaction. Rare reports of liver injury mean you should stop and seek advice if signs of liver problems occur.

Safety note[2]Caution

The coumarin content gives a theoretical bleeding risk, so use caution with anticoagulant medicines; use in pregnancy and breastfeeding is not recommended.

References

REF-1868, REF-0492, REF-1869, REF-1870, REF-0576, REF-1871, REF-1872, REF-1873, REF-1874, REF-1875, REF-1876

References & Sources

  1. Moyo, M. and Van Staden, J (2014) 'Medicinal properties and conservation of Pelargonium sidoides DC', Journal of Ethnopharmacology, 152(2), pp. 243-255. doi:10.1016/j.jep.2014.01.009 Meta-analysis / review
    https://doi.org/10.1016/j.jep.2014.01.009
  2. Careddu, D. and Pettenazzo, A (2018) 'Pelargonium sidoides extract EPs 7630: a review of its clinical efficacy and safety for treating acute respiratory tract infections in children', International Journal of General Medicine. doi:10.2147/IJGM.S154198 Meta-analysis / review
    https://doi.org/10.2147/IJGM.S154198
  3. Timmer, A., Gunther, J., Rucker, G., Motschall, E., Antes, G. and Kern, W.V (2008) 'Pelargonium sidoides extract for acute respiratory tract infections', Cochrane Database of Systematic Reviews, (3), pp. CD006323. doi:10.1002/14651858.CD006323.pub2 Meta-analysis / review
    https://doi.org/10.1002/14651858.CD006323.pub2
  4. Timmer, A., Gunther, J., Motschall, E., Rucker, G., Antes, G. and Kern, W.V (2013) 'Pelargonium sidoides extract for treating acute respiratory tract infections', Cochrane Database of Systematic Reviews, 2013(10), pp. CD006323. doi:10.1002/14651858.CD006323.pub3 Meta-analysis / review
    https://doi.org/10.1002/14651858.CD006323.pub3
  5. Agbabiaka, T.B., Guo, R. and Ernst, E (2008) 'Pelargonium sidoides for acute bronchitis: a systematic review and meta-analysis', Phytomedicine, 15(5), pp. 378--385. doi:10.1016/j.phymed.2007.11.023 Meta-analysis / review
    https://doi.org/10.1016/j.phymed.2007.11.023
  6. Kayser, O., Kolodziej, H. and Kiderlen, A.F (2001) 'Immunomodulatory principles of Pelargonium sidoides', Phytotherapy Research, 15(2), pp. 122-126. doi:10.1002/ptr.785 Preclinical
    https://doi.org/10.1002/ptr.785
  7. Kolodziej, H. and Kiderlen, A.F (2006) 'In vitro evaluation of antibacterial and immunomodulatory activities of Pelargonium reniforme, Pelargonium sidoides and the related herbal drug preparation EPs 7630', Phytomedicine, 14(Suppl 6), pp. 18-26. doi:10.1016/j.phymed.2006.11.020 Preclinical
    https://doi.org/10.1016/j.phymed.2006.11.020
  8. Gokce, S., Dortkardesler, B.E., Yurtseven, A. and Kurugol, Z (2021) 'Effectiveness of Pelargonium sidoides in pediatric patients diagnosed with uncomplicated upper respiratory tract infection: a single-blind, randomized, placebo-controlled study', European Journal of Pediatrics, 180(9), pp. 3019-3028. doi:10.1007/s00431-021-04211-y Randomized trial
    https://doi.org/10.1007/s00431-021-04211-y
  9. Kolodziej, H (2011) 'Antimicrobial, Antiviral and Immunomodulatory Activity Studies of Pelargonium sidoides (EPs 7630) in the Context of Health Promotion', Pharmaceuticals, 4(10), pp. 1295-1314. doi:10.3390/ph4101295 Meta-analysis / review
    https://doi.org/10.3390/ph4101295
  10. Roth, M., Fang, L., Stolz, D. and Tamm, M (2019) 'Pelargonium sidoides radix extract EPs 7630 reduces rhinovirus infection through modulation of viral binding proteins on human bronchial epithelial cells', PLoS One, 14(2), pp. e0210702. doi:10.1371/journal.pone.0210702 Clinical study
    https://doi.org/10.1371/journal.pone.0210702
  11. Willcox, M., Simpson, C., Wilding, S., Stuart, B., Soilemezi, D., Whitehead, A., Morgan, A., Wrixon, E., Zhu, S., Yao, G., Webley, F., Yan, R., Bostock, J., Bell, M., Griffiths, G., Leydon, G., Little, P., Butler, C., Hay, A.D. and Moore, M (2021) 'Pelargonium sidoides root extract for the treatment of acute cough due to lower respiratory tract infection in adults: a feasibility double-blind, placebo-controlled randomised trial', BMC Complementary Medicine and Therapies, 21(1), pp. 48. doi:10.1186/s12906-021-03206-4 Randomized trial
    https://doi.org/10.1186/s12906-021-03206-4
  12. Conrad, A., Kolodziej, H. and Schulz, V (2007) 'Pelargonium sidoides-extract (EPs 7630): registration confirms efficacy and safety', Wiener Medizinische Wochenschrift. doi:10.1007/s10354-007-0434-6 Preclinical
    https://doi.org/10.1007/s10354-007-0434-6
  13. Koch, A.K., Klose, P., Lauche, R., Cramer, H., Baasch, J., Dobos, G.J. and Langhorst, J (2016) 'A Systematic Review of Phytotherapy for Acute Rhinosinusitis', Forschende Komplementarmedizin, 23(3), pp. 165--169. doi:10.1159/000447467 Meta-analysis / review
    https://doi.org/10.1159/000447467

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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Generated June 22, 2026 from omniasana.bio