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The resin exuded from the trunk of Styrax tonkinensis or S. benzoin (Styracaceae). Enters the Heart and Spleen channels. Pungent, bitter, and neutral with an aromatic filth-repelling quality, it opens the orifices, revives consciousness, moves qi, and invigorates blood. Similar to su he xiang in function but milder. Often combined with su he xiang, she xiang, and bing pian in pill formulations.
开窍辟秽、行气活血
入丸散每次0.6–1.5g，不入煎剂（受热易挥发）。
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.
阴虚火旺者忌用。
不入煎剂。性温辛散，阴虚火旺者忌用。
安息香味辛苦，平。主心腹恶气鬼疰。
@misc{bencaodian-an-xi-xiang,
author = {{Bencaodian Editorial}},
title = {Ān Xī Xiāng 安息香 (Benzoin) — Benzoinum},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/an-xi-xiang},
urldate = {2026-04-16},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
安息香含苯甲酸及其酯类（松柏醇苯甲酸酯）和香兰素，具有防腐、祛痰及中枢兴奋作用。
Benzoin contains benzoic acid, coniferyl benzoate, and vanillin, with antiseptic, expectorant, and CNS-stimulating activities.
开窍辟秽，行气活血。功近苏合香而力较缓。
Opens orifices and repels filth, moves qi and invigorates blood. Similar to su he xiang but milder.
This section is provided for academic reference only and does not constitute medical advice.