Rhizoma et Radix Notopterygii

It is a kind of perennial herb and a member of the plant family Apiaceae. Distributed inShaanxi,Sichuan,Gansu,Qinghai, and Tibet of China, it has the effects of resolving exterior and dissipating cold, expelling wind and eliminating dampness, and relieving pain. It can be applied in anemofrigid-damp arthralgia, anemofrigid cold, joints pain, swelling, and ulcer.