Dictamnus dasycarpus, known as Bai Xian Pi, is a toxic but therapeutically valued root bark traditionally employed to clear damp-heat and eliminate parasites in TCM practice. Its distinctive volatile oil content produces a peppery aroma and causes phototoxic reactions on skin contact, distinguishing it as one of the more potent antimicrobial herbs in the materia medica.
root bark, stem bark
decoction, powder, tincture, infusion
6–12g dried root bark in decoction daily; 1.5–3g powder twice daily
May cause photosensitivity. Generally safe topically.
Explore the full cross-tradition profile, AI botanical notes, and related blends:
Open Bai Xian Pi in the app →