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Limonite, a hydrated iron oxide mineral. Enters the Stomach and Large Intestine channels. Sweet, astringent, and slightly cold, it astringes the intestines, stops diarrhea, stanches bleeding, and stops leukorrhea. Similar to chi shi zhi but slightly cool in nature. A mineral astringent.
涩肠止泻力增
宜先煎或布包入煎
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.
实邪积滞者禁用。孕妇慎用。
矿物药（褐铁矿含水氧化铁）。需注意重金属含量检测。入煎剂宜先煎或布包。
味甘，寒。主咳逆，寒热烦满，下赤白，血闭症瘕。久服轻身延年。
上品
@misc{bencaodian-yu-yu-liang,
author = {{Bencaodian Editorial}},
title = {Yǔ Yú Liáng 禹余粮 (Limonite) — Limonitum},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/yu-yu-liang},
urldate = {2026-04-16},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
禹余粮主含含水氧化铁，具有吸附收敛作用，外用可覆盖保护创面。
Yu yu liang is primarily hydrated iron oxide; provides adsorptive and astringent action, and can cover and protect wound surfaces topically.
《中国药典》以铁含量及重金属限度为质量控制指标。
Chinese Pharmacopoeia uses iron content and heavy metal limits as quality control markers.
This section is provided for academic reference only and does not constitute medical advice.