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| Common name | 龍眼肉, Longyanrou, Longan ArillusJP,CP, Longan ArilJP,CP |
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| Original plant name | Euphoria longana Lamarck , (Ryūgan) |
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| Family name | Sapindaceae |
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| Used part | aril |
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| Quality for selection | Large, spherical fruits with a brown, unbroken pericarp, abundant pulp, and a moist texture are considered to be of good quality (NI). |
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| Official compendium | JP XIX, CP (2025 ed.) |
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| Clinical application | It is used as a sedative and nutritive tonic for symptoms such as palpitations, forgetfulness, and insomnia. |
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| Medical system | Traditional Chinese medicine |
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Drug effect in traditional medicine | Traditional classification | Drugs for nourishing the blood |
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| Beneficial effect | [Property and Flavor] Warm; sweet.
[Meridian Tropism] Heart and spleen meridians.
[Actions] To tonify and replenish heart and spleen, nourish bloodand tranquilize the mind.
[Indications] Deficiency of qi and fearful throbbing, forgetfulness and insomnia, blood deficiency and sallow complexion. |
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| Chemical constituent | unknown 詳細は不明:
新鮮品 (*C1):
水分,灰分,脂肪,蛋白質,可溶性含窒素化合物,蔗糖
乾燥品 (*C1):
ブドウ糖,蔗糖,有機酸類,含窒素化合物
Not exactly known:
fresh one (*C1):
fluid, ash, fat, protein, soluble nitrogen-containing compound, sucrose
dried one (*C1):
glucose, sucrose, organic acids, nitrogen-containing compound
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Classical reference (Chinese Herbal Classic "Zhenglei bencao") | ※Click this image to see the actual image |
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| Disease | Palpitation, Insomnia, Amnesia, Anorexia, Mlaise |
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| Formulation | Kamikihito, Kihito, Kochinmuyusan |
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| References | JP: The 19th edition of the Japanese Pharmacopoeia.
CP: Pharmacopoeia of the People's Republic of China 2025 edi.
C1)The Encyclopedia of Wakan-Yaku with Color Pictures Vol. I, p 213. |
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| Remarks | Longyanrou is commonly called Engan (円眼) or Keien'niku (桂円肉) in Japan. |
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| Last renewal date | 2026/07/17 |
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