1. Aliases

Ciqin Er, Mountain Radish Root, Black Old Crow Head, Heshangtou, Mountain Radish, Chuanduan, Zirapeseed, Sichuan Radish Root, Drum Hammer Grass.
2. Plant morphology
Perennial herbs. The main root is one to several, conical in shape. The stem is upright, with 6-8 edges and spiny hairs on the edges. Basal leaves pinnately divided, with long stalks; Stem and leaves opposite, with short or nearly sessile stalks. The leaf blade is pinnately divided, with the central lobe being the longest, elliptical or broadly lanceolate. The tip is gradually pointed and has sparse coarse teeth. There are 1-2 pairs of lobes on both sides, and both sides are covered with short hairs. The head inflorescence is circular, with several bracts, narrow linear, covered with short hairs. The bracts are obovate, with a pointed long beak at the top and short hairs; Calyx shallowly discoid, with 4 deeper teeth and several small teeth between the teeth; The corolla is white or light yellow, with a short slender tube at the base, 4-lobed at the top, and 2 large and 2 small lobes. The outer part is covered with prickly hairs; 4 stamens, extending outside the corolla, the style is of equal length, and the ovary is enclosed within the small bract. The small bracts have 4 edges, with micro teeth at the top, and are light brown in color. achene. The flowering period is from August to September, and the fruiting period is from September to October.
3. Origin distribution
Born on fertile and humid slopes and grasslands. Distributed in Hubei, Sichuan, Yunnan, Guizhou and other places.
4. Harvesting and processing
Harvest in autumn, remove the root heads and fibrous roots, bake over low heat until semi dry, stack and sweat until the heart turns green, and then dry.
5. Characteristics of medicinal herbs
Cylindrical, slightly flattened, some slightly curved, 5-15 centimeters long, with a diameter of 0.5-2 centimeters. The surface is gray brown or yellow brown, with slightly twisted or significantly twisted longitudinal wrinkles and grooves, visible transverse pores and a few fibrous root marks. Soft in texture, becomes hard after prolonged exposure, is prone to breakage, and has an uneven cross-section. The skin is dark green or brown, the outer edge is brown or light brown, and the wood is yellow brown. The vascular bundles are arranged radially. The gas is slightly fragrant, and the taste is bitter, slightly sweet, and then astringent.
6. Nature, taste, and meridian tropism
Slightly warm, with a bitter and spicy taste. Return to the liver and kidney meridians.
7. Effect and function
Tonify liver and kidney, strengthen muscles and bones, continue to break injuries, and stop collapse and leakage. It belongs to the category of wind dispelling and dampness strengthening and bone strengthening drugs.
8. Clinical applications
Dosage 6-15 grams, decoct and take; Or enter the pill powder. External use: Fresh products in moderation, mashed for external application. Used to treat soreness and weakness in the waist and knees, rheumatic pain, metrorrhagia, fetal leakage, and falls and falls.
9. Pharmacological research
Chuanxuduan extract has a significant positive inotropic effect on both in vivo and in vitro hearts of animals; It has a purulent, hemostatic, analgesic, and promoting tissue regeneration effect on ulcers. Animal experiments have shown that it has an anti vitamin E deficiency effect.
10. Chemical composition
Chuanduduan contains triterpenoid saponins and their ester glycosides. The roots contain alkaloids and volatile oils, which have strong antibacterial properties. The oils mainly contain ethyl propionate and 4-methylphenol.
11. Taboos for use
Evil Thunder Pill.
12. Prescription coordination
1. Kidney deficiency and lower back pain: 9 grams each of Chuanduduan and Eucommia ulmoides, 12 grams each of Dogji and Cuscuta seeds, decocted in water.
2. Rheumatoid joint pain: 12 grams each of Chuanduduan, Niugeng, Fangji, and Geranium, decocted in water.
The content of the article is for clinical reference only. Non professionals in traditional Chinese medicine are not allowed to try medication.