葛根 has been a TCM staple for over 2,000 years — it's the headliner ingredient in
葛根汤 (gégēntāng), a classical formula recorded in Zhang Zhongjing's 《
伤寒论》 (c. 200 CE) for stiff necks and early-stage colds. You'll find
葛根 powder, tea, and noodles all over Chinese health-food shops.
