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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。
本平台仅供学术参考，不构成医疗建议。
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.
本部分信息仅供学术参考，不构成医疗建议。
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/zh/herbs/lu-gen},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}