Loading
New to this? Read about Four Natures & Five Flavors and Channel Tropism
The fresh or dried rhizome of Phragmites communis (Poaceae). Enters the Lung and Stomach channels. Sweet, cold, and lightweight, it clears heat without damaging the Stomach and generates fluids without retaining pathogenic factors. An excellent herb for warm-disease fluid damage and Stomach-heat vomiting. Wu Jutong used fresh reed rhizome decoction as the liquid medium in Yin Qiao San.
清热生津、除烦止渴力强，凡温热病津伤口渴、胃热呕吐多用鲜品
作用与鲜品相似而药力稍缓，便于储存，煎汤内服常用
干品15–30g；鲜品用量加倍（60–120g），生津止渴、清透热邪之力尤佳。
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.
脾胃虚寒者忌服。
质轻味淡，药性平和，虽性寒而不甚伤胃。大剂量鲜品榨汁服用时，脾虚便溏者慎之。
太阴温病，但热不恶寒而渴者，辛凉平剂银翘散主之。
温病生津之品
@misc{bencaodian-lu-gen,
author = {{Bencaodian Editorial}},
title = {Lú Gēn 芦根 (Reed Rhizome) — Phragmitis Rhizoma},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/lu-gen},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
芦根含多糖、薏苡素及氨基酸，具清热生津、止呕、解热及利尿作用。
Phragmites rhizome contains polysaccharides, coixol, and amino acids with heat-clearing, fluid-generating, antiemetic, antipyretic, and diuretic effects.
芦根甘寒入肺胃，清热生津止呕，温病常用。
Sweet and cold, entering lung and stomach — clears heat, generates fluids, and stops vomiting in warm diseases.
水煎液有解热、止吐及促进分泌作用；多糖显示抗氧化活性。
Decoction shows antipyretic, antiemetic, and secretagogue effects; polysaccharides show antioxidant activity.
《中国药典》以性状和浸出物为质量控制指标。
Chinese Pharmacopoeia uses macroscopic and extractive controls as quality markers.
This section is provided for academic reference only and does not constitute medical advice.