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紫菀的功效与主治

T 2026-09-10 09:13:29S https://www.dayi.org.cn/cmedical/1155978.htmlW admin

紫菀为菊科植物紫菀Aster tataricus L.f.的干燥根和根茎,又名青菀、紫蒨、返魂草根、夜牵牛、紫菀茸。其性味辛、苦、甘,微温,归肺经。

紫菀具有润肺下气、消痰止咳的功效。主治痰多喘咳、新发或长期咳嗽、久咳痰中带血等症。《中国药典》记载其功能与主治为润肺下气,消痰止咳,用于痰多喘咳,新久咳嗽,劳嗽咳血。

紫菀甘润苦泄,性温而不热,质润而不燥,长于润肺下气,开肺郁,化痰浊而止咳。凡咳嗽之证,无论外感、内伤,病程长短,寒热虚实,皆可用之。

紫菀的临床应用主要包括以下几个方面:

第一,用于痰多喘咳。紫菀能润肺下气、消痰止咳,为治咳嗽痰多之要药。治外感风寒、咳嗽痰多,常配伍桔梗、荆芥、百部等,如止嗽散。治肺热咳嗽、痰黄黏稠,可配伍黄芩、桑白皮、瓜蒌等清热化痰药。

第二,用于新久咳嗽。紫菀性温而不热,润而不燥,新久咳嗽皆可应用。治新发咳嗽,可生用,配伍解表宣肺药。治久咳不止,可蜜炙用,配伍补益肺肾、敛肺止咳药。

第三,用于劳嗽咳血。紫菀能润肺止咳、止血,用于肺虚劳嗽、痰中带血,常配伍阿胶、知母、贝母等养阴润肺、化痰止咳药。《本草述》记载紫菀与麦冬,皆虚劳吐血咳嗽要药,然二味实宜相佐为功。

第四,用于小便不利。紫菀能开宣肺气、通调水道,用于肺气闭塞、小便不利,可配伍杏仁、桔梗、车前子等宣肺利水药。

紫菀的临床应用以润肺下气、消痰止咳为核心,是治疗咳嗽的常用药,尤其适用于肺虚久咳、痰中带血之证。

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