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The dried leaf of Artemisia argyi (Asteraceae). Enters the Liver, Spleen, and Kidney channels. Pungent, bitter, and warm, it is the key herb for warming the channels to stop bleeding and calming the fetus, and is the primary material for moxibustion (aged mugwort is preferred). Used raw it disperses cold and regulates menstruation; charred it warms the channels and stops bleeding. Combined with e jiao in Jiao Ai Tang for pregnancy bleeding.
长于温经散寒、调经安胎，多用于虚寒痛经、胎动不安、宫冷不孕
辛散之性减，专于温经止血，多用于虚寒性崩漏下血、吐衄便血
温经止血之力益增，多用于崩漏
内服3–9g；外用适量，供灸治或熏洗用。生用温经散寒，炒炭止血，醋艾炭温经止血之力增强。
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.
阴虚血热者慎用。孕妇慎用，但胎动不安、妊娠下血属虚寒者为正治（如胶艾汤）。外敷可引起接触性皮炎。
内服过量或长期服用可引起肝损伤、神经毒性（含侧柏酮）。外用可能引起接触性皮炎。艾灸烟雾对呼吸道敏感者刺激，室内灸治需通风。阴虚火旺者禁服。
《金匮要略》胶艾汤：阿胶、艾叶、当归、芎䓖、芍药、甘草、干地黄，治妇人有漏下者，有半产后因续下血都不绝者，有妊娠下血者，假令妊娠腹中痛，为胞阻。
@misc{bencaodian-ai-ye,
author = {{Bencaodian Editorial}},
title = {Ài Yè 艾叶 (Mugwort Leaf) — Artemisiae Argyi Folium},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/ai-ye},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
艾叶含挥发油（桉油精、侧柏酮、龙脑）、黄酮类及鞣质，具有温经止血、抗菌、抗炎及平喘作用；外用燃烧（艾灸）则以热力及挥发性成分发挥温通经络之效。
Artemisiae argyi Folium contains essential oils (cineole, thujone, borneol), flavonoids, and tannins, with hemostatic, antimicrobial, anti-inflammatory, and mild bronchodilatory effects; moxibustion relies on combined heat and volatile components.
《中药学》（Bensky）指出艾叶水煎剂对革兰氏阳性菌及部分真菌有抑制作用。
Bensky notes inhibitory action of Artemisia argyi decoctions against Gram-positive bacteria and some fungi.
陈氏药理学提到艾叶挥发油中的侧柏酮含量较高时对中枢神经系统有一定神经毒性，提示大剂量或长期内服需谨慎。
Chen & Chen note that thujone in the essential oil may exert neurotoxic effects at high doses, cautioning against prolonged high-dose internal use.
Brinker 记载妊娠期应避免大剂量内服艾叶，因动物实验中显示子宫兴奋作用。
Brinker advises against high-dose internal use during pregnancy due to uterine-stimulant activity in animal models.
This section is provided for academic reference only and does not constitute medical advice.