Animal experiment shows that the coumar ether compound extracted from feverfew can treating bronchial asthma, bronchitis and emphysema effectively.

• 动物实验证明，这类从菊科植物中提取的香豆草醚类化合物可有效治疗和改善支气管哮喘、慢性支气管炎、肺气肿的症状。