Analgesic and antipyretic activities of the aqueous extract of Urtica macrorrhiza in experimental animals

Zhao Yongna, Reanmongkol Wantana, Bouking Pisit, Li Zhongkun, Zhang Rongping
Fitoterapia 2005, 76 (1): 91-5
Oral administration of the aqueous extract of the stem of Urtica macrorrhiza (100-400 mg/kg) dose dependently reduced the number of writhings and stretchings induced by acetic acid and decreased licking activity of the late phase in formalin test at doses of 200 and 400 mg/kg. At doses of 200 and 400 mg/kg, p.o. it suppressed yeast-induced fever in rats.

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