1. Aliases

Red Chaihu, South Chaihu, Dixun, Zanthoxylum, Shancai, Rucao, Chaicao.
2. Plant morphology
Perennial herbs. The main root is deep and long, with few branches. The upper part of the stem is more branched and slightly curved in the shape of a "Z". Leaves alternate, linear or narrowly linear, 7-17 cm long and 2-6 cm wide, apex gradually pointed with short awns, base gradually narrowed, with 5-7 longitudinal veins and white bony edges. Multiple umbrella shaped inflorescences, integrated with loose panicles; Total bracts 1-3, linear; Umbrella width 3-8, curved; Small bracts 5, narrowly lanceolate, closely attached to the umbrella; Pedicels 6-15; Yellow flowers. Double hanging fruit is wide elliptical, about 2.5 millimeters long and 2 millimeters wide, with rough and obtuse edges. The flowering period is from July to September, and the fruiting period is from August to October.
3. Origin distribution
Born in sandy grasslands, sand dune meadows, and sparse forests on sunny slopes. Mainly produced in Hubei, Sichuan, Anhui and other places.
4. Harvesting and processing
Harvest in spring and autumn, remove stems, leaves, and sediment, and dry.
5. Characteristics of medicinal herbs
The root is relatively thin, conical, with many fine hairy withered leaf fibers at the top, and mostly unbranched or slightly branched at the bottom. The surface is reddish brown or black brown, with many fine ring patterns near the root. Slightly soft in texture, easy to break, with a slightly flat cross-section and no fibrous appearance. Defeated oil and gas.
6. Nature, taste, and meridian tropism
Mildly cold in nature and bitter in taste. Guigan Meridian, Gallbladder Meridian, and Lung Meridian.
7. Effect and function
Reconcile the exterior and interior, soothe the liver, and elevate yang. Xin Liang Jie Biao Yao belongs to the subcategory of Jie Biao Yao.
8. Clinical applications
Dosage of 3-9 grams, decoction in water; Or into pills or powder. External use: In moderation, boil and wash with water; Or adjust and apply at the end of the study. Used to treat colds, fever, cold and heat exchange, chest and rib pain, menstrual disorders, uterine prolapse, and prolapse of the anus.
9. Pharmacological research
Pharmacological experiments have shown that Chaihu has anti-inflammatory, antipyretic, sedative, analgesic, antitussive, and anticonvulsant effects; Can reduce liver damage and promote bile secretion; Has the effects of lowering blood pressure, lowering serum cholesterol, and hemolysis; It has functions such as anti ulcer, antibacterial, antiviral, anti-tumor, raising blood sugar, reducing blood fat content, and resisting radiation damage. Toxicity.
10. Chemical composition
This product mainly contains valeric acid, linolenic acid, palmitic acid, stearic acid, kaempferol, kaempferol, quercetin, rutin, limonene, borneol, saikosaponin II, myrtle alcohol, alpha spinach sterol, deglucose saikosaponin alpha, saikosaponin, and other components. Also contains ingredients such as Chun Fu Shou Chun.
11. Taboos for use
The syndrome of deficiency of true yin, hyperactivity of liver yang, and internal movement of liver wind should not be taken.
12. Compatibility prescription
① Treatment for external wind cold, fever and aversion to cold, headache and body pain: 3-9 grams of Chaihu, 3 grams of Fangfeng, 4.5 grams of Chenpi, 6 grams of peony, 3 grams of licorice, and 35 slices of ginger. Water for one and a half minutes, fry for seven or eight minutes. Hot clothing. (The Complete Book of Jingyue, Zhengchaihu Drink)
② To treat malaria, there is more cold and less heat, and abdominal distension: 6 grams each of Chaihu, Banxia, Houpu, and Chenpi. Two bowls of water, fry for eight minutes. Dress casually. (Compendium of Materia Medica)
③ Treatment of rib pain, cold and heat exchange: 6 grams of Chaihu. 4.5 grams each of Chuanxiong, Fructus Aurantii (stir fried with bran), and Paeonia lactiflora, 1.5 grams each of Glycyrrhiza uralensis (roasted), and 4.5 grams each of Xiangfu. Water for one and a half minutes, fry for eight minutes, take before eating. (Chaihu Shugan San in the Complete Book of Jingyue)
④ Treatment for jaundice: 30g of Chaihu (excluding seedlings) and 0.3g of Licorice. Make a small file in the upper part, take a bowl of water, hold the roots of the white thatch, fry together until seven parts, and grind off any residue. Serve at any time and finish the day. (Sun Shang's Prescription)
⑤ Treating accumulated heat and diarrhea: 12 grams each of Chaihu and Huangqin. Boiled in water. (Shenghui Fang)
The content of the article is for clinical reference only. Non professionals in traditional Chinese medicine are not allowed to try medication.