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Omnia Sana · Plant Monograph

Oregon Grape

Mahonia aquifolium

Family BerberidaceaeParts used Root (and bark, wood)Also known as Oregon grape root, Holly-leaved barberry, Berberis aquifolium

This monograph compiles 1 documented constituent, 3 pharmacological actions, 7 traditional / indicated uses, supported by 13 cited sources, drawn directly from the Omnia Sana plant database.

Key Constituents

Isoquinoline alkaloids (berberine, berbamine, palmatine, jatrorrhizine, magnoflorine)[2, 11, 12]

Berberine is the main anti-psoriatic and antimicrobial constituent.

AlkaloidsBerberine

Pharmacological Actions

Anti-inflammatory[7, 10, 11]

Anti-inflammatory and antiproliferative (slows the skin-cell overgrowth of psoriasis)

Anticancer (preclinical)[3, 4, 6, 11]

Anti-inflammatory and antiproliferative (slows the skin-cell overgrowth of psoriasis)

Antimicrobial[2, 5, 8, 9, 12]

Antimicrobial (berberine) - supports skin and mucosal infection

Traditional & Indicated Uses

Arthritis / joint pain[11]Good · 7/10

inferred from anti-inflammatory action

more plants for arthritis / joint pain →detailed sources →
Eczema[11]Good · 7/10

Topical for atopic dermatitis (eczema) and skin irritation

more plants for eczema →detailed sources →
Infection (general)[5, 12]Traditional · 2/10

Antimicrobial (berberine) - supports skin and mucosal infection

more plants for infection (general) →detailed sources →
Inflammation (general)[10, 11]Good · 7/10

inferred from anti-inflammatory action

more plants for inflammation (general) →detailed sources →
Psoriasis[1, 7, 11, 13]Strong · 9/10

Anti-inflammatory and antiproliferative (slows the skin-cell overgrowth of psoriasis); Topical treatment of mild-to-moderate psoriasis (reduces plaque severity) - a double-blind, placebo-controlled RCT showed significant improvement in PASI and quality-of-life scores

more plants for psoriasis →detailed sources →
Skin irritation[1, 11]Good · 8/10

Topical for atopic dermatitis (eczema) and skin irritation

more plants for skin irritation →detailed sources →
Wounds[12]Traditional · 1/10

inferred from antimicrobial action

more plants for wounds →detailed sources →

Safety, Cautions & Contraindications

Safety note[12]Caution

Avoid internal use in pregnancy and breastfeeding: like goldenseal, the berberine it contains can cross the placenta and into milk and worsen newborn jaundice (kernicterus risk).

Safety note[11, 12]Caution

Berberine impairs the metabolism of some medicines - for example it raises blood levels of cyclosporine, risking toxicity - so use caution with prescription drugs. It is used mainly topically for skin conditions.

References

REF-1173, REF-1174, REF-1175, REF-1176, REF-1177, REF-1178, REF-1179, REF-1180, REF-1181, REF-1182

References & Sources

  1. Gulliver, W.P. and Donsky, H.J (2005) 'A report on three recent clinical trials using Mahonia aquifolium 10% topical cream and a review of the worldwide clinical experience with Mahonia aquifolium for the treatment of plaque psoriasis', American Journal of Therapeutics, 12(5), pp. 398-406. doi:10.1097/01.mjt.0000174350.82270.da Clinical study
    https://doi.org/10.1097/01.mjt.0000174350.82270.da
  2. Cernakova, M. and Kostalova, D (2002) 'Antimicrobial activity of berberine--a constituent of Mahonia aquifolium', Folia Microbiologica, 47(4), pp. 375-378. doi:10.1007/BF02818693 Preclinical
    https://doi.org/10.1007/BF02818693
  3. Damjanovic, A., Kolundzija, B., Matic, I.Z., Krivokuca, A. and others (2020) 'Mahonia aquifolium Extracts Promote Doxorubicin Effects against Lung Adenocarcinoma Cells In Vitro', Molecules, 25(22), pp. 5233. doi:10.3390/molecules25225233 Preclinical
    https://doi.org/10.3390/molecules25225233
  4. Cernakova, M., Kostalova, D., Kettmann, V., Plodova, M. and others (2002) 'Potential antimutagenic activity of berberine, a constituent of Mahonia aquifolium', BMC Complementary and Alternative Medicine, 2, pp. 2. doi:10.1186/1472-6882-2-2 Preclinical
    https://doi.org/10.1186/1472-6882-2-2
  5. Slobodnikova, L., Kostalova, D., Labudova, D., Kotulova, D. and Kettmann, V (2004) 'Antimicrobial activity of Mahonia aquifolium crude extract and its major isolated alkaloids', Phytotherapy Research, 18(8), pp. 674-676. doi:10.1002/ptr.1517 Preclinical
    https://doi.org/10.1002/ptr.1517
  6. Godjevac, D., Damjanovic, A., Stanojkovic, T.P., Andjelkovic, B. and Zdunic, G (2018) 'Identification of cytotoxic metabolites from Mahonia aquifolium using 1H NMR-based metabolomics approach', Journal of Pharmaceutical and Biomedical Analysis, 150, pp. 9-14. doi:10.1016/j.jpba.2017.11.075 Preclinical
    https://doi.org/10.1016/j.jpba.2017.11.075
  7. Muller, K. and Ziereis, K (1994) 'The antipsoriatic Mahonia aquifolium and its active constituents; I. Pro- and antioxidant properties and inhibition of 5-lipoxygenase', Planta Medica, 60(5), pp. 421-424. doi:10.1055/s-2006-959523 Preclinical
    https://doi.org/10.1055/s-2006-959523
  8. Rohrer, U., Kunz, E.M.K., Lenkeit, K., Schaffner, W. and Meyer, J (2007) 'Antimicrobial activity of Mahonia aquifolium and two of its alkaloids against oral bacteria', Schweizer Monatsschrift fur Zahnmedizin, 117(11), pp. 1126-1131. Preclinical
    Find this source
  9. Vollekova, A., Kostalova, D., Kettmann, V. and Toth, J (2003) 'Antifungal activity of Mahonia aquifolium extract and its major protoberberine alkaloids', Phytotherapy Research, 17(7), pp. 834-837. doi:10.1002/ptr.1256 Preclinical
    https://doi.org/10.1002/ptr.1256
  10. Hajnicka, V., Kostalova, D., Svecova, D., Sochorova, R. and others (2002) 'Effect of Mahonia aquifolium active compounds on interleukin-8 production in the human monocytic cell line THP-1', Planta Medica, 68(3), pp. 266-268. doi:10.1055/s-2002-23126 Preclinical
    https://doi.org/10.1055/s-2002-23126
  11. Gulliver, W.P. and colleagues (2018) 'Review of the Efficacy and Safety of Topical Mahonia aquifolium for the Treatment of Psoriasis and Atopic Dermatitis', Journal of Clinical and Aesthetic Dermatology. Available at: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6334833/ Meta-analysis / review
    https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6334833/
  12. Herbal Reality (n.d.) 'Oregon Grape Root (Berberis aquifolium): Benefits, Uses, Safety'. Available at: https://www.herbalreality.com/herb/oregon-grape/ Traditional / reference
    https://www.herbalreality.com/herb/oregon-grape/
  13. Bernstein, S., Donsky, H., Gulliver, W., Hamilton, D., Nobel, S. and Norman, R (2006) 'Treatment of mild to moderate psoriasis with Relieva, a Mahonia aquifolium extract - a double-blind, placebo-controlled study', American Journal of Therapeutics, 13(2), pp. 121--126. doi:10.1097/00045391-200603000-00007 Randomized trial
    https://doi.org/10.1097/00045391-200603000-00007

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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