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The dried hook-bearing stem of Uncaria rhynchophylla and related species (Rubiaceae). Enters the Liver and Pericardium channels. Sweet and cool, it clears Liver heat, pacifies Liver yang, and extinguishes Liver wind, making it a key herb for childhood convulsions, hypertension, and wind-stirring patterns. Commonly paired with tian ma in Tian Ma Gou Teng Yin and Ling Jiao Gou Teng Tang.
息风止痉，清热平肝，多生用后下
煎服3–12g；不宜久煎，应后下，煎煮时间不超过20分钟，以免有效成分（钩藤碱）破坏而降低降压息风之效。
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.
无实热及肝阳上亢者不宜使用；脾胃虚寒者慎用。气血虚而非有热者忌用。
本品所含钩藤碱久煎易破坏，故必须后下。降压作用明确，与降压药并用应监测血压，避免低血压。无明显毒性，但脾胃虚寒者过量可致便溏。
钩藤，微寒，无毒。主小儿寒热，十二惊痫。
草部
@misc{bencaodian-gou-teng,
author = {{Bencaodian Editorial}},
title = {Gōu Téng 钩藤 (Uncaria Stem with Hooks) — Uncariae Ramulus cum Uncis},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/gou-teng},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
钩藤主含吲哚类生物碱（钩藤碱、异钩藤碱、毛钩藤碱），药理证实其降压、镇静、抗惊厥、神经保护及钙拮抗作用。
Gouteng contains indole alkaloids (rhynchophylline, isorhynchophylline, hirsutine); pharmacology confirms antihypertensive, sedative, anticonvulsant, neuroprotective and calcium-antagonist actions.
《中国药典》以钩藤碱与异钩藤碱作为含量测定指标；久煎可破坏有效成分，入药宜后下。
Chinese Pharmacopoeia uses rhynchophylline and isorhynchophylline as assay markers; prolonged boiling destroys actives—add near end of decoction.
天麻钩藤饮为经典平肝熄风方，广泛用于高血压与头痛。
Tianma Gouteng Yin is a classical liver-calming wind-extinguishing formula widely used for hypertension and headache.
无实热、肝火、肝风者慎用；无毒性报告。
Use cautiously without heat or wind signs; generally low toxicity.
This section is provided for academic reference only and does not constitute medical advice.