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The dried leaf or leafy twig of Perilla frutescens (Lamiaceae). Enters the Lung and Spleen channels. Pungent and warm, it releases the exterior and disperses cold while simultaneously moving qi and harmonizing the stomach, making it the key herb for wind-cold exterior patterns complicated by qi stagnation and chest oppression, as in Xiang Su San and Shen Su Yin.
解表散寒、行气宽中、安胎解毒
取用紫苏梗（茎）则行气宽中、止痛安胎作用更著，发表力弱
煎服5–9g，不宜久煎，宜后下；外用适量，煎水洗
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.
温病及气弱表虚者忌用。阴虚内热者慎用。
含挥发油（紫苏醛等），久煎则有效成分挥发。气虚、阴虚及温病热盛者忌用。少数人可有接触性皮炎。
紫苏叶，治伤寒头痛，憎寒壮热，咳嗽气喘，中寒呕逆等证。
常用药物
@misc{bencaodian-zi-su-ye,
author = {{Bencaodian Editorial}},
title = {Zǐ Sū Yè 紫苏叶 (Perilla Leaf) — Perillae Folium},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/zi-su-ye},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
紫苏叶挥发油以紫苏醛为主，另含迷迭香酸和木犀草素等酚类成分，具有解热、抗过敏、抗菌、解痉及安胎止呕的药理作用。
Perilla leaf volatile oil is dominated by perillaldehyde, with rosmarinic acid and luteolin providing antipyretic, antiallergic, antimicrobial, antispasmodic and antiemetic/fetus-calming activities.
Chen & Chen 引述迷迭香酸在 IgE 介导的过敏反应模型中显著抑制肥大细胞脱颗粒。
Chen & Chen cite rosmarinic acid markedly inhibiting mast cell degranulation in IgE-mediated allergy models.
《中药学》（Bensky）指出紫苏叶发散风寒、行气宽中、安胎、解鱼蟹毒，四大功效并行。
Bensky lists Zi Su Ye's four core functions: release wind-cold, move qi and soothe the middle, calm the fetus and detoxify fish/crab poisoning.
This section is provided for academic reference only and does not constitute medical advice.