[Variety Source]

This product is annelid leech (Whitmania pigra Whitman), leech (Hirudo nipponica Whitman) or willow leech (W. acranulata Whitman ) of all. Available in most parts of the country. Caught in summer and autumn, scalded with boiling water, cut into sections and sun-dried or dried at low temperature for raw use. Or perm with Talc powder before use.

[Property]

salty and bitter, neutral. slightly toxic. act on liver channel.

[Efficacy]

breaking and expelling blood stasis.

[Indications]

Used for abdominal mass, blood stasis, bruises, injuries, etc. This product is salty and bitter in blood aspect. It is good at breaking and expelling blood stasis. Its power is strong and effective. To treat abdominal mass and amenorrhea, it is often used with Sparganium Rhizome, Peach Kernel, Carthamus and the like; for those with physical weakness, Ginseng, Chinese Angelica and other tonifying and replenishing qi and blood medicines are used together to prevent injury, such as Wenbing Tiaobian Huazheng Huisheng Dan. To treat injuries, use Sappan Wood, pyrite, etc., such as Puji Fang.

In modern times, it is clinically used to treat thrombocytosis, and it is decoctionally taken for a short period of time, and has a certain effect; it has a good effect in treating cerebral hemorrhage and intracranial hematoma, especially for patients with external sac hemorrhage. In addition, it can also treat blood stasis and swelling after replantation surgery of amputated limbs; colicky pain of coronary heart disease, acute stage of lung heart disease, hyperlipidemia, etc., all of which have certain curative effects.

[Documentation]

1. Benjing: "The Lord drives away bad blood, static blood, moon closure, breaking blood stasis, abdominal mass... and promotes water channels."
2. Bielu: "Early abortion."
3. Bencao Yanyi: "Treat the injury."

[Usage and Dosage]

Add 1.5~3g of decoction; grind into powder and take 0.3~0.5g. It is appropriate to take it as a pill or powder or grind it into powder. Or place it freshly on the swollen area to absorb blood and eliminate blood stasis.

[Precaution]

Pregnant women should not take this product.

[Modern Pharmacology]

Fresh leech glands contain leech, which is easily destroyed by overheating and dilute hydrochloric acid. Also contains heparin, antithromboxane, protein, etc. Leech factor can prevent the action of thrombin on fibrinogen and hinder blood coagulation. 20mg leech can prevent the coagulation of 100g into the blood. It has a preventive effect on thrombosis in rats caused by bacterial internal toxins and can reduce the mortality of rats. The heparin contained also has anticoagulant effects.