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The dried root and rhizome of Cynanchum atratum or C. versicolor (Asclepiadaceae). Cold, bitter and salty, entering the Stomach, Liver, and Kidney channels. Clears vacuity heat, cools the blood, and promotes urination. Effective for yin-vacuity fever and postpartum vacuity fever, as well as urinary tract heat conditions.
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.
味苦，平。主暴中风，身热肢满，忽忽不知人，狂惑邪气，寒热酸疼，温疟洗洗，发作有时。
中品
@misc{bencaodian-bai-wei,
author = {{Bencaodian Editorial}},
title = {Bái Wēi 白薇 (Cynanchum Root) — Cynanchi Atrati Radix et Rhizoma},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/bai-wei},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
白薇富含 C21 甾体苷及强心苷，具退虚热、抗炎、利尿作用，过量有心脏毒性。
Bai Wei contains C21 steroidal glycosides and cardiac glycosides with heat-relieving, anti-inflammatory, and diuretic effects; cardiotoxic at overdose.
白薇苦咸寒，清热凉血，利尿通淋，退虚热。
Bitter-salty and cold; clears heat, cools blood, promotes urination, and relieves vacuity heat.
This section is provided for academic reference only and does not constitute medical advice.