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The dried flower bud of Tussilago farfara (Asteraceae). Enters the Lung channel. Pungent, bitter, sweet, and warm, it moistens the Lung, directs qi downward, stops cough, and transforms phlegm. A key cough-stopping herb, especially suitable for wind-cold and vacuity-cold cough, it can be used for cough regardless of cold, heat, vacuity, or repletion with appropriate combinations. Classically paired with zi wan as in Zi Wan San and Bai Hua Gao.
宣肺解表力强，用于外感咳嗽
润肺止咳之功增强，用于内伤久咳
煎服5–10g；内伤久咳宜蜜炙；外感咳嗽宜生用。
Reference range for non-pregnant adults. Not a personalized prescription. Pregnancy, lactation, and pediatric use require specialist supervision.
Protective guidance only — when to avoid or use with caution. This block deliberately omits pregnancy, lactation, and pediatric dosing: any such use must be managed by a qualified TCM practitioner or appropriate specialist.
阴虚燥咳、肺火壅盛之咳血者不宜单用。含吡咯里西啶生物碱，不宜久服。
含吡咯里西啶类生物碱（senkirkine 等），大剂量或久服对肝有潜在毒性，临床宜控制疗程与剂量。常与紫菀相须为用，一宣一降，相得益彰。
味辛，温。主咳逆上气善喘，喉痹，诸惊痫，寒热邪气。
中品
@misc{bencaodian-kuan-dong-hua,
author = {{Bencaodian Editorial}},
title = {Kuǎn Dōng Huā 款冬花 (Coltsfoot Flower) — Farfarae Flos},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/kuan-dong-hua},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
款冬花含款冬酮、黄酮及吡咯里西啶生物碱，具止咳、祛痰、升压及抗炎作用。
Tussilago contains tussilagone, flavonoids, and pyrrolizidine alkaloids with antitussive, expectorant, pressor, and anti-inflammatory effects.
款冬酮具明显止咳和短暂升压作用，并呈现抗炎活性。
Tussilagone produces notable antitussive and transient pressor effects and shows anti-inflammatory activity.
含肝毒性吡咯里西啶生物碱；孕妇、哺乳期及肝病患者禁用；不宜长期或大剂量使用。
Contains hepatotoxic pyrrolizidine alkaloids — contraindicated in pregnancy, lactation, and liver disease; avoid long-term or high-dose use.
《中国药典》以款冬酮含量（不少于 0.070%）为质量指标。
Chinese Pharmacopoeia specifies tussilagone (≥0.070%) as the quality marker.
This section is provided for academic reference only and does not constitute medical advice.