Pharmaceutical name:

英文藥名﹕

Arillus Euphoriae Longanae

Botanical name:

學名﹕

Dimocarpus longans Lour.

Euphoria longans (Lour.) Steud.

Pometia pinnata Forst. (long yan of Eastern Taiwan 臺東龍眼 )

Pron. in Japanese:

日語發音﹕

ryuganniku (long yan rou 龍眼肉)

Pron. in Korean:

韓語發音﹕

yonganyuk (long yan rou 龍眼肉)

Pron. in Cantonese:

粵音﹕

lung4 ngaan5 yuk6

Other Names:

別名﹕

gui yuan 桂圓，yuan yan 圓眼 ，yi zhi 益智，mi pi 蜜脾，long yan gan 龍眼乾

tava (Fijian, Taongan, Samoan name), acai (native name)

Common Name:

英文名﹕

longan

Distribution:

產地﹕

Guangdong, Guangxi, Fujian, Taiwan, Sichuan provinces of China, and also Philippines, Pacific Islands, Southeast Asia.

Properties

(characteristics)﹕

性味﹕

1. 1. root: slightly bitter, neutral.

2. 2. leaves: slightly bitter, neutral.

3. 3. meat (long yan rou): .

4. 4. seeds: slightly bitter, tart, neutral.

1. 根：微苦，平。

2. 葉：微苦，平。

3. 假種皮(龍 眼 肉 )： 甘，平。

4. 種子：微苦，澀，平。

Channels (meridians) entered:

歸經﹕

Long yan rou: heart and spleen

龍 眼 肉 ﹕  歸 心 ﹐ 脾 經 。

藥理﹕

fungus inhibition: water extract of long yan rou (1:2), inhibits Microsporon Audouini in test tube.

抑菌試驗：龍眼肉的水浸劑(1：2)， 在試管內對奧杜盎氏小芽胞癬菌有抑制作用。

Actions & Indications:

主治﹕

1. Root: for Chyluria , leucorrhea, rheumatoid arthritis.

2. Leaves: prevents epidemic influenza, epidemic meningitis, influenza, enteritis, eczema of the scrotum.

3. Long yan rou (edible part of the fruit): as tonic after illnesses, neurasthenia, forgetfulness, palpitation, insomnia.

4. Seeds: stomachache, scalding, bleeding from cut,

1. 根： 乳糜尿，白帶，風濕關節痛。

2. 葉： 預防流行性感冒，流行性腦脊髓膜炎，感冒，腸炎；外用治陰囊濕疹。

3. 假種皮(龍 眼肉)： ，病後體虛，神經衰弱，健忘，心悸，失眠。

4. 種子(龍 眼核)： 胃痛，燒燙傷，刀傷出血，疳氣痛；外用治外傷

Chemical ingredients:

化學成份﹕

Dosage:

用量﹕

long yan rou: 6 to 15 g.

Samples of formulae:

處方舉例﹕

For insomnia caused by heart, spleen and blood deficient:

Prescription: long yan rou 30 g, da zao  5 pieces, rice 60 g.

Add water to make into porridge at night and take before bed time.

治心脾血虚引起的失眠﹕

龍眼肉30克， 大棗5枚 ，粳米60克

加 水。 晚上 睡前煮成 粥

Modern Research:

現代研究﹕

antifatigue effects of longan [1]

抗疲倦作用 【1】

Toxicity & Cautions:

毒素與禁忌﹕

do not  use long yan rou in cases of phlegm-fire (damp heat in the middle jiao / burner)

內有痰火，中焦濕滯停飲者忌服