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The dried rhizome of Imperata cylindrica (Poaceae). Enters the Lung, Stomach, and Bladder channels. Sweet and cold, it cools blood and stops bleeding without causing stasis, clears heat and promotes urination, and is widely used with high safety.
凉血利尿
偏于止血
煎服15–30g。鲜品加倍（30–60g），取汁饮效更佳。
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.
脾胃虚寒者慎用。
安全性高，无明显毒副作用。
味甘，寒。主劳伤虚羸，补中益气，除瘀血、血闭、寒热，利小便。
@misc{bencaodian-bai-mao-gen,
author = {{Bencaodian Editorial}},
title = {Bái Máo Gēn 白茅根 (Imperata Rhizome) — Imperatae Rhizoma},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/bai-mao-gen},
urldate = {2026-04-16},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
白茅根含白茅素、钾盐等，具有利尿、止血、抗菌作用，钾盐含量高为其利尿的重要物质基础。
Imperata rhizome contains cylindrin and abundant potassium salts conferring diuretic, hemostatic, and antibacterial effects; the high potassium content underlies its diuretic action.
《中国药典》收载白茅根。
Chinese Pharmacopoeia lists Baimaogen.
This section is provided for academic reference only and does not constitute medical advice.