降龙草，中药名。为苦苣苔科降龙草属植物降龙草Hemiboea subcapitata C.B.Clarke.的全草。具有解毒的功效。主治蛇咬伤，疮疖。
Xiang-long-cao, name of Chinese Medicinal Material. Hemiboea subcapitata C.B.Clarke) is the whole plant of the plant belonging to the Gentianaceae family, Hemiboea subcapitata C.B.Clarke. It has the effect of detoxification and is mainly used to treat snake bites and sores.

功效作用 功能
Efficacy and Functions

解毒。主治
Detoxification. Main treatment.

蛇咬伤，疮疖。用法用量
Snake bite injury, ulceration. Dosage and administration.

内服：煎汤，9-15g。外用：鲜品捣敷。注意事项
Internal use: Decoction, 9-15g. External use: Freshly prepared poultice. Precautions.

《贵州民间药物》：“忌酸冷食物。”药理作用
"Guizhou Folk Medicine": "Avoid sour and cold foods." Pharmacological effects

抑菌作用降龙草茎叶煎剂，在试管内，对金黄色葡萄球菌、乙型链球菌、白喉杆菌、伤寒杆菌、绿脓杆菌和痢疾杆菌有时显抗菌作用，对炭疽杆菌和大肠杆菌也有一定抑制作用。临床应用 相关配伍
The decoction of the stems and leaves of Houttuynia cordata has antibacterial effects. In vitro, it sometimes shows antibacterial effects against Staphylococcus aureus, Streptococcus pyogenes, Corynebacterium diphtheriae, Salmonella typhi, Pseudomonas aeruginosa, and Shigella dysenteriae. It also has a certain inhibitory effect on Bacillus anthracis and Escherichia coli. Relevant compatibility should be considered in clinical applications.

1、治热性腹痛；降龙草水煎服。2、治外伤肿毒:降龙草苗捣烂，敷患处。加工炮制 采收加工

1. To treat heat-type abdominal pain: Take a decoction of Houttuynia cordata.2. To treat external injuries with swelling and toxicity: Mash Houttuynia cordata seedlings and apply to the affected area. Processing and preparation: Harvest and process.

8-10月采收，鲜用或晒干。植物学信息 植物种属
Harvest from August to October, for fresh use or drying. Botanical information: plant species.

苦苣苔科降龙草属植物降龙草。形态特征
The plant of the Gentianaceae family is the genus Gentiana, with the characteristic morphology of Gentiana.

多年生草本，高20-30cm。基部伏地，有须根。茎四棱形，近光滑或微有细毛，有棕黑色斑点。叶对生，长椭圆形，长10-20cm，宽6-10cm，先端尖，基部渐狭，下延至柄的基部呈狭翼状，全缘，上面散生白色短毛；叶柄长2-3.5cm。花3-5朵集成近头状；花梗顶生或上端腋生，长2-3cm，呈2歧分枝；苞片圆形；花萼6裂，裂片披针形，长约1cm；花冠广筒形，长3-4cm，稍近2唇状，淡紫红色；雄蕊2；子房上位。蒴果线形，长2-4cm。花期8-9月。分布区域
Perennial herb, 20-30cm tall. The base is prostrate with adventitious roots. The stem is four-angled, nearly smooth or slightly hairy, with brown-black spots. Leaves are opposite, oblong, 10-20cm long, 6-10cm wide, pointed at the tip, gradually narrowing at the base, extending down to the base of the petiole in a narrow wing shape, with entire margins, sparsely covered with white short hairs on the upper surface; petioles are 2-3.5cm long. Flowers are clustered in 3-5 near the top; peduncles are terminal or axillary at the upper end, 2-3cm long, dichotomously branched; bracts are round; calyx is 6-lobed, lobes lanceolate, about 1cm long; corolla is broadly tubular, 3-4cm long, slightly bilabiate, pale purple-red; stamens are 2; ovary is superior. Capsule is linear, 2-4cm long. Flowering period is August to September. Distribution area.

分布江苏、浙江、贵州、四川、湖南、湖北、陕西等地。生长环境
Distributed in Jiangsu, Zhejiang, Guizhou, Sichuan, Hunan, Hubei, Shaanxi and other regions. Growing environment.

生于岩石阴湿处。
Born in damp and shady places among rocks.