Oregon grape root shares berberine alkaloids with goldenseal and barberry, giving it comparable antimicrobial and liver-supporting properties. It is particularly noted in the Eclectic tradition for chronic skin conditions driven by impaired liver function — psoriasis, eczema, acne — where its dual action of improving bile flow and fighting surface bacteria addresses both root cause and symptom. Used topically, it reduces psoriatic plaque inflammation.
root, bark
tincture, decoction, capsule, topical cream
15–30 drops tincture 2–3× daily; or 1 tsp bark decocted 20 min, 2 cups daily. For skin: 10% cream applied topically
Avoid in pregnancy (berberine is uterine-stimulating). Not for long-term use without breaks. May interact with drugs metabolised by CYP3A4. Not for children under 2. High doses may cause nausea.
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