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化湿解暑力强，夏令暑湿证尤宜
芳香化湿，醒脾开胃
鲜品加倍（15–30g），暑湿、湿温证以鲜佩兰为佳。不宜久煎。
本平台仅供学术参考，不构成医疗建议。
佩兰为菊科泽兰，含挥发油及香豆素类成分，具抗炎、祛痰与抑菌作用，对应传统芳香化湿、醒脾开胃之功。
Eupatorium (Pei Lan) yields a volatile oil and coumarin compounds with anti-inflammatory, expectorant, and antimicrobial actions, corresponding to its traditional aromatic dampness-transforming and appetite-rousing use.
Bensky 强调佩兰常与藿香同用化湿，宜后下以保存挥发油。
Bensky notes Pei Lan is typically paired with Huo Xiang for dampness transformation and should be added late in decoction to preserve its volatile oil.
Chen & Chen 记载佩兰挥发油对多种呼吸道病原菌有抑制作用。
Chen & Chen report that Pei Lan volatile oil inhibits several respiratory pathogens in vitro.
本部分信息仅供学术参考，不构成医疗建议。
阴虚血燥者、气虚者不宜。
《黄帝内经·素问·奇病论》载有治脾瘅一方：治之以兰，除陈气也，即指本品。为治口甘苔腻、湿浊困脾之专药。不宜久煎以免香气散失。
有病口甘者，病名为何？何以得之？岐伯曰：此五气之溢也，名曰脾瘅。治之以兰，除陈气也。
@misc{bencaodian-pei-lan,
author = {{Bencaodian Editorial}},
title = {Pèi Lán 佩兰 (Eupatorium Herb) — Eupatorii Herba},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/zh/herbs/pei-lan},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}