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补气养阴，清火生津
煎服3–6g，另煎兑服为佳；或研末吞服，每次0.5–1g。
For educational reference only — not medical advice.
西洋参主含人参皂苷Rb1、Re、Rg1及拟人参皂苷F11（区别于人参的标志物），具有补气养阴、抗疲劳、免疫调节及降血糖作用。
American ginseng contains ginsenosides Rb1, Re, Rg1 and pseudoginsenoside F11 (distinguishing it from Asian ginseng), with qi-and-yin tonifying, anti-fatigue, immunomodulatory and hypoglycemic effects.
WHO专论收录Radix Panacis Quinquefolii，用于气阴两虚及作为补益剂。
WHO monograph lists Radix Panacis Quinquefolii as a qi-and-yin tonic.
可能影响华法林药效；与降糖药合用应监测血糖。
May alter warfarin effect; monitor blood glucose when combined with hypoglycemic agents.
拟人参皂苷F11为西洋参特征性成分，可用于与人参鉴别。
Pseudoginsenoside F11 is a characteristic marker distinguishing American ginseng from Asian ginseng.
This section is provided for academic reference only and does not constitute medical advice.
性凉，中阳衰微、胃有寒湿、阳气不足、寒证泄泻者忌服。不宜与藜芦同用（十八反）。
凉润之品，阳虚体质及寒湿内盛者不宜。服药期间忌饮浓茶及食萝卜，以免减弱补益之效。
西洋参，苦微甘，寒。味厚气薄，补肺降火，生津液，除烦倦。虚而有火者相宜。
@misc{bencaodian-xi-yang-shen,
author = {{Bencaodian Editorial}},
title = {Xī Yáng Shēn 西洋参 (American Ginseng) — Panacis Quinquefolii Radix},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/xi-yang-shen},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}