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The dried ripe seed of Raphanus sativus (Brassicaceae). Enters the Spleen, Stomach, and Lung channels. Pungent, sweet, and neutral, it is the key herb for digesting food stagnation, relieving distention, directing qi downward, and transforming phlegm. Featured in Bao He Wan and San Zi Yang Qin Tang, where it is combined with zi su zi and bai jie zi for elderly patients with phlegm-dyspnea.
长于涌吐风痰，多用于痰涎壅盛、喉痹、食积气滞之重证
药性缓和，长于消食除胀、降气化痰，多用于食积气滞、痰喘咳嗽
消食除胀常用5–12g；降气化痰定喘可用至15g。生用长于涌吐风痰，炒用长于消食下气化痰，入汤剂宜打碎。
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.
气虚无食积、痰滞者慎用。不宜与人参同用，恐减人参补气之力（相恶）。脾胃虚弱而无积滞者忌服。
气虚者不宜单用或久用，以免耗气。不宜与人参同用。现代研究提示其有降压作用，低血压者慎服。种子需打碎入煎。
《本草纲目》载：莱菔子之功，长于利气。生能升，熟能降。升则吐风痰、散风寒、发疮疹；降则定痰喘咳嗽、调下痢后重、止内痛。
@misc{bencaodian-lai-fu-zi,
author = {{Bencaodian Editorial}},
title = {Lái Fú Zǐ 莱菔子 (Radish Seed) — Raphani Semen},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/lai-fu-zi},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
莱菔子含芥子碱、脂肪油及莱菔素，具促进胃肠动力、祛痰、降压及抗菌作用。
Raphanus seed contains sinapine, fixed oil, and raphanin with prokinetic, expectorant, antihypertensive, and antimicrobial effects.
莱菔子促进胃肠蠕动、镇咳祛痰；莱菔素对革兰阳性菌及真菌有抑制作用。
Raphanus seed enhances GI motility and is antitussive/expectorant; raphanin inhibits Gram-positive bacteria and fungi.
莱菔子消食除胀、降气化痰，与人参相畏，不宜同用。
Reduces food accumulation and distension and descends qi to transform phlegm; traditionally antagonistic to ginseng.
《中国药典》以芥子碱硫氰酸盐含量（不少于 0.40%）为质量指标。
Chinese Pharmacopoeia specifies sinapine thiocyanate (≥0.40%) as the quality marker.
This section is provided for academic reference only and does not constitute medical advice.