Barberry root bark and berry share berberine alkaloids with goldenseal and Oregon grape, providing potent antimicrobial activity against a wide spectrum of pathogens including bacteria, fungi, and protozoa. It has a long history in Western, Ayurvedic, and Unani medicine for liver disease, jaundice, intestinal infections, and skin conditions. Its bitter action stimulates bile production and improves fat digestion. Research shows berberine's effectiveness against H. pylori and for blood sugar management.
root bark, berry, stem bark
tincture, decoction, capsule, jam (berry)
15–30 drops tincture 2–3× daily; or 1 tsp bark decocted 15 min, 2 cups daily short-term
Avoid in pregnancy — berberine stimulates uterine contractions. Not for long-term use without breaks. May interact with drugs metabolised by CYP3A4. Not recommended for children under 2. High doses may cause nausea or GI irritation.
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