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清热凉血、滋阴降火、解毒散结，临床均用生品
内服煎汤9–15g；治热入营血、咽喉肿痛可用至30g；入丸散酌减。
For educational reference only — not medical advice.
玄参含哈巴俄苷等环烯醚萜类成分，具有抗炎、降压、轻度降糖及镇静作用，为清热凉血、滋阴解毒的药理基础。
Scrophularia contains iridoid glycosides such as harpagoside with anti-inflammatory, hypotensive, mild hypoglycemic and sedative effects, underlying its heat-clearing, blood-cooling and yin-nourishing actions.
Bensky 指出玄参十八反反藜芦，与半夏、附子等十八反禁忌须遵守。
Bensky notes Xuan Shen is part of the eighteen antagonisms and is incompatible with Li Lu (Veratrum).
《中国药典》以哈巴俄苷及哈巴苷为质量控制指标。
The Chinese Pharmacopoeia uses harpagoside and harpagide as quality markers.
This section is provided for academic reference only and does not constitute medical advice.
不宜与藜芦同用（十八反）。脾胃虚寒、食少便溏者忌服。
性寒而滋腻，易碍脾助湿，脾胃虚寒、食少便溏者忌服。与藜芦相反，不可同用。不宜长期大量服用。
味苦，微寒。主腹中寒热积聚，女子产乳余疾，补肾气，令人目明。
中品
@misc{bencaodian-xuan-shen,
author = {{Bencaodian Editorial}},
title = {Xuán Shēn 玄参 (Scrophularia Root) — Scrophulariae Radix},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/xuan-shen},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}