Xu Chang Qing (Radix Cynanchi Paniculati) – paniculate swallowwort root
This herb dispels wind and relieves pain and has a strong effect to dispel wind and relieve itching.
Pharmacological Effects
1. Analgesic: Intraperitoneal injection of Xu Chang Qing at 10 g/kg in mice showed marked analgesic action that started 10 minutes after injection, and lasted for up to 60 minutes.
2. Sedative: Intraperitoneal injection of Xu Chang Qing at 5 to 10 g/kg in mice showed marked sedative effects by decreasing spontaneous movement and reaction to external stimuli, for up to 60 minutes.
3. Effect on temperature regulation: Intraperitoneal injection of a Xu Chang Qing preparation at 3 g/kg lowered body temperature by approximately 0.9° C for up to 30 minutes.