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解表散寒，温肺化饮，通窍止痛
内服入汤剂一般1–3g，研末吞服0.5–1g；古有“细辛不过钱”之说，过量可致呼吸抑制及中毒。
本平台仅供学术参考，不构成医疗建议。
细辛主含挥发油（甲基丁香酚、黄樟醚等）及木脂素，具有镇痛、解热、局部麻醉及抗炎作用；有潜在毒性。
Asarum herb contains volatile phenylpropanoids (methyl eugenol, safrole) and lignans, with analgesic, antipyretic, local anesthetic and anti-inflammatory effects; potentially toxic.
《中国药典》2005年版起已将细辛法定药用部位由全草改为根及根茎，以降低地上部分马兜铃酸暴露；规定含马兜铃酸I不得超过0.001%。
Since 2005, the Chinese Pharmacopoeia has restricted official Xi Xin to root and rhizome (not whole plant) to reduce aristolochic acid exposure, with a limit of aristolochic acid I not exceeding 0.001%.
黄樟醚具肝毒及潜在致癌性；马兜铃酸有明确肾毒性及致癌性，剂量与时间均应严格控制。
Safrole is hepatotoxic and potentially carcinogenic; aristolochic acid is definitively nephrotoxic and carcinogenic—dose and duration must be strictly controlled.
'细辛不过钱'为传统用量警戒，通常每剂不超过3g。
The adage 'Xi Xin no more than one qian' reflects traditional dose caution, generally not exceeding 3 g per dose.
本部分信息仅供学术参考，不构成医疗建议。
气虚多汗、阴虚阳亢头痛、阴虚肺热咳嗽者忌用。反藜芦（十八反）。内服煎汤一般不过钱（不超过3g），用量过大可致中毒。
细辛含黄樟醚（safrole）和马兜铃酸类成分，过量可引起恶心、呕吐、头痛、呼吸困难甚至呼吸麻痹。现行药典规定根及根茎入药，不用地上部分。孕妇慎用；不可与藜芦配伍。
味辛，温。主咳逆，头痛脑动，百节拘挛，风湿痹痛，死肌。久服明目，利九窍，轻身长年。
上品
@misc{bencaodian-xi-xin,
author = {{Bencaodian Editorial}},
title = {Xì Xīn 细辛 (Asarum) — Asari Radix et Rhizoma},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/zh/herbs/xi-xin},
urldate = {2026-04-09},
note = {CC BY-SA 4.0}
}