Toosendan is a kind of traditional Chinese medicine, which comes from the dried and mature fruit of Toosendan in Meliaceae. The nature of Toosendan Fructus is bitter and cold, with little toxicity, and it belongs to liver meridian, small intestine meridian and bladder meridian. Its efficacy and function are soothing the liver, purging heat, promoting qi circulation to relieve pain and killing insects, and it can be used to treat liver depression and fire, chest and hypochondrium, abdominal distension and pain, hernia pain, abdominal pain caused by insect accumulation, etc. Toosendan Fructus is widely used in clinic. For example, the classic prescription Yiguanjian contains Toosendan Fructus, which is a prescription for nourishing yin and soothing the liver, and is used to treat symptoms of liver and kidney yin deficiency and liver qi stagnation. Like Zhengan Xifeng Decoction, Juhe Pill, etc., the prescriptions also contain Toosendan Fructus. However, it should be noted that this medicine, Toosendan Fructus, is bitter and cold, which is easy to hurt the stomach. Therefore, it should be used with caution for those with deficiency of spleen and stomach, and for pregnant women. In addition, Toosendan Fructus has little toxicity, so patients with poor liver function should avoid excessive use.

Toosendan seeds are spherical with a diameter of 2 ~ 3.2 cm. The surface is golden yellow to brownish yellow, slightly shiny, with a few depressions or shrinkage and dark brown spots. There are style remnants at the top, depression at the base and fruit stalk marks. The exocarp is leathery, and there is often a gap between it and the pulp. The pulp is soft and yellowish, and it is sticky when wet with water. The stone is spherical or ovoid, hard, with 6-8 longitudinal edges at both ends, and divided into 6-8 chambers, each chamber containing dark brown oblong seeds 1 grain. The gas is specific, sour and bitter.

Toosendan Fructus, a traditional Chinese medicine, is the mature fruit of Toosendan Fructus, a deciduous arbor plant of Meliaceae. It is produced in all parts of the south, especially in Sichuan. In winter, when the fruit is ripe, it is harvested, impurities are removed and dried. Used for mashing, raw or bran frying.

The name of Toosendan Fructus is Jin Lingzi, which is a favorite for hernia and abdominal pain. Melia azedarach is bitter and cold with little toxicity, chest, hypochondrium, abdomen and swelling pain. Insects accumulate in the stomach and hurt the head and tinea, and testicular swelling and pain are the main drugs.

It is used for stomach pain due to stagnation of qi, which is manifested by abdominal distension and pain in both sides. It can be used with Yuanhutong, such as Toosendan Powder. It can also be used with Su Geng, Chuan Pu and Mu Xiang.

It is used for chest pain and hypochondriac pain, which is more common in intercostal neuralgia. The symptoms are hypochondriac pain, mainly distending pain, pain with no fixed place, chest tightness and discomfort, and it can be used equally with Chaihu and Qingpi.

It is used for colic pain, with symptoms of abdominal pain caused by stagnation of cold. It can be combined with Radix Aucklandiae, Fructus Foeniculi and Fructus Evodiae, such as Daoqi Decoction.