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The dried arillus of Dimocarpus longan (Sapindaceae). Enters the Heart and Spleen channels. Sweet and warm, it is an excellent tonic for the Heart and Spleen that nourishes blood and calms the spirit. In Gui Pi Tang it is combined with ren shen, huang qi, and dang gui to treat overthinking damaging the Spleen with Heart-blood insufficiency causing palpitations and insomnia.
补心脾，益气血，安神
煎服9–15g；大剂量可至30g。亦可入膏剂、酒剂、单味泡服。
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.
性温味甘助湿生热，脾胃湿盛、痰饮停滞、舌苔厚腻、内有郁火、外感未解、小儿疳积及糖尿病患者均不宜服。
甘温滋腻，过量易助湿生痰、动火上炎，糖尿病患者及湿热体质慎用。
味甘，平。主五脏邪气，安志厌食。久服强魂聪明，轻身不老，通神明。一名益智。生山谷。
中品
@misc{bencaodian-long-yan-rou,
author = {{Bencaodian Editorial}},
title = {Lóng Yǎn Ròu 龙眼肉 (Longan Arillus) — Longan Arillus},
year = {2026},
howpublished = {Bencao Dian: A Bilingual Knowledge Graph of Traditional Chinese Medicine},
url = {https://bencaodian.org/en/herbs/long-yan-rou},
urldate = {2026-04-17},
note = {CC BY-SA 4.0}
}© Bencaodian Editorial · Licensed under CC BY-SA 4.0
龙眼肉富含糖类、多糖及微量生物活性成分，具补血养心、安神及温和免疫调节作用。
Longan aril is rich in sugars, polysaccharides, and minor bioactives that nourish blood, calm the spirit, and provide mild immunomodulation.
龙眼肉甘温补益心脾、养血安神，归脾汤主要药味。
Sweet and warm — tonifies heart and spleen and nourishes blood to calm the spirit; key ingredient of Gui Pi Tang.
多糖具抗氧化及免疫调节活性；腺苷可能参与安神作用。
Polysaccharides show antioxidant and immunomodulatory activity; adenosine may contribute to the calming effect.
《中国药典》以性状和浸出物为质量指标，糖尿病患者慎用。
Chinese Pharmacopoeia uses macroscopic and extractive quality markers; caution in diabetic patients due to sugar content.
This section is provided for academic reference only and does not constitute medical advice.