蜂斗菜(Petasites japonicus)用于解毒、活血化瘀,治疗跌打损伤等。近年,有报道认为紫蜂斗菜(P.hybridus)的根部提取物可缓解喘息和花粉症的症状。在探讨蜂斗菜提取物抗Ⅰ型变态反应的活性时发现,其含有抑制肥大细胞脱颗粒的成分。此次从蜂斗菜地上部分分离得到具有抗变态反应? Butterbur (Petasites japonicus) is used for detoxification, blood circulation, and treatment of bruises. In recent years, it has been reported that the root extract of P. hybridus alleviates the symptoms of wheezing and hay fever. When discussing the activity of Butterbur extract against type I allergy, it was found that it contained components that inhibit the degranulation of mast cells. The anti-allergic reactions have been isolated from the aerial parts of butterbur.