牛蒡 우엉 (우방)

Burdock (우엉, 牛蒡)

Nature and flavor. In Korean traditional medicine, every herb is classified by its energetic "nature" (warm, cool, hot, cold, or neutral) and its taste, which together predict how it will act in the body. Classical herbals describe burdock seed — called ubangja (牛蒡子) or aksil — as bitter (with some pungency), cold in nature, and non-toxic.

Main uses. Because of its cooling quality, the seed was used to clear "wind-heat" — a traditional concept covering acute conditions marked by inflammation, fever, and surface irritation. Practitioners turned to it for sore, swollen throat; for hive-like skin eruptions with itching and broken skin; and for draining the toxic heat behind boils and abscesses.

Cautions. Because the seed is strongly cold, people who tend to feel chilled or suffer from frequent loose stools should avoid heavy or prolonged use.

A modern perspective. While classical texts focused on the seed, today it is the root that is most often eaten. Burdock root is rich in inulin — a prebiotic dietary fiber — along with polyphenol antioxidants, which is why it has drawn interest for gut health and oxidative-stress support. Human clinical evidence for these benefits, however, remains limited.