Fructus Aurantii Immaturus


The immature fruit of Citrus aurantium L, family Rutaceae.

Fruit nearly globular (prepared by cutting into two halves), section slightly protruding with margin revoluted, 3-4 cm in diameter. Exocarp green-brown, coarse, with numerous granular oil glands and obvious style scars or fruit stalk scar; mesocarp 0.5 cm thick, white; endocarp divided into 7-12 segments, with seeds retained or dropped off. Delicately aromatic in odour. Bitter, acrid and sour in taste, slightly warm in nature, and attributive to spleen and stomach channels.

1. Activate vital energy circulation and eliminate phlegm, disperse stagnation and remove mass: For indigestion and stagnation of vital energy with feeling of fullness in the chest and upper abdomen, used together with Rhizoma Zingiberis, Rhizoma Coptidis; for phlegm-syndrome with productive cough and chest pain, used together with Fructus Trichosanthis, Rhizoma Coptidis (Decoction for Mild Phlegm-Heat Syndrome in the Chest) for heat type and together with Pericarplum Citri Reticulatae, Rhizoma Zingiberis Recens for cold type.
2. Activate vital energy in the digestive tract: For stagnation of gastrointestine with diarrhea and dysentery with tenesmus, or constipation, used together with Radix et Rhizoma Rhei, Cortex Mcignoliae Officinalts (Decoction for Mild Purgation).
3. Supplement the vital energy: For hysteroptosis, gastroptosis, prolapse of rectum, etc. Recently, its injection is used for shock, and also effective for elevating blood pressure and improving blood supply of the heart, kidney and brain.

Pharmacological Action
1. Its active components, synephrine and Nmethyl tyramine, lower the blood pressure in anesthetized dogs.
2. Increasing the coronary flow significantly and heart rate slightly in anesthetized dogs.
3. Diuretic.
4. Its decoction inhibits the intestines in mice or in rabbits in vitro, stimulates the intestines in dogs with gastric fistula and intestinal fistula, and also induces contraction of gravid or non-gravid uterus in rabbits both in vivo and in vitro.

Administration Decoction: 3-15g; 15-45g for visceroptosis.
Injection: For shock, 10-40g IV, followed by 20-l00g IV in drips.


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Mr. Wang Tao

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