鸭舌草，中药名。为雨久花科植物鸭舌草Monochoriavaginalis的全草。分布于全国各地。具有清热，凉血，利尿，解毒之功效。常用于感冒高热，肺热咳喘，百日咳，咳血，吐血，崩漏，尿血，热淋，痢疾，肠炎，肠痈，丹毒，疮肿，咽喉肿痛，牙龈肿痛，风火赤眼，毒蛇咬伤，毒菇中毒。
Ya-she-cao, name of Chinese Medicinal Material. It is the whole plant of Monochoria vaginalis, a plant of the Menyanthaceae family. It is distributed throughout the country. It has the functions of clearing heat, cooling blood, diuresis, and detoxification. It is often used for high fever in colds, lung heat cough and asthma, whooping cough, hemoptysis, hematemesis, menorrhagia, hematuria, hot urination, dysentery, enteritis, intestinal abscess, erysipelas, ulcer swelling, sore throat, gum swelling and pain, conjunctivitis, snake bites, and mushroom poisoning.

功效作用 功能
The efficacy and functions.

清热，凉血，利尿，解毒。主治
Clearing heat, cooling blood, promoting diuresis, and detoxification. Used to treat...

感冒高热，肺热咳喘，百日咳，咳血，吐血，崩漏，尿血，热淋，痢疾，肠炎，肠痈，丹毒，疮肿，咽喉肿痛，牙龈肿痛，风火赤眼，毒蛇咬伤，毒菇中毒。用法用量
Cold and high fever, lung heat with cough and wheezing, whooping cough, coughing up blood, vomiting blood, menorrhagia, hematuria, hot dysuria, dysentery, enteritis, intestinal abscess, erysipelas, ulcer swelling, sore throat, gingival pain, conjunctivitis, snake bite, and mushroom poisoning. Dosage and administration.

内服：煎汤15-30g（鲜品30-60g）；或捣烂绞汁。外用：适量，捣敷。注意事项
Internal use: decoct 15-30g (30-60g for fresh herbs); or grind into juice. External use: apply an appropriate amount and use as a poultice. Precautions

虚寒性泻痢者禁用。药理作用
Prohibited for use in patients with cold-damp diarrhea. Pharmacological action.

抑菌作用。相关论述
Antibacterial effect. Relevant discussion.

《开宝本草》：“今按别本注云：江南人用蒸鱼，食之甚美。五月、六月采茎、叶，暴干。”临床应用 临床应用
"Kai Bao Ben Cao": "According to annotations in other editions: People in the Jiangnan region steam fish, and it is very delicious. In May and June, the stems and leaves are collected and dried in the sun." Clinical application Clinical application

治疗慢性气管炎。相关配伍
Treatment of chronic bronchitis. Related prescriptions.

治食各种毒菰中毒：鲜少花鸭舌草250g，捣烂绞汁，拌白糖适量，灌服。或鲜少花鸭舌草500g（捣汁），冰糖60g，炖至冰糖溶化后服。（《常见青草药选编》）附注
Treatment for various Amanita mushroom poisonings: Take 250g of fresh Houttuynia cordata, mash and squeeze out the juice, mix with an appropriate amount of white sugar, and administer orally. Alternatively, take 500g of fresh Houttuynia cordata (mash and squeeze out the juice), add 60g of rock sugar, and simmer until the rock sugar dissolves before administering. (From "Commonly Used Selection of Green Herbal Medicines") Note:

本变种窄叶鸭舌草治疗慢性支气管炎疗效较好。窄叶少花（花1-3或4）的定为少花鸭舌草。每次用少花鸭舌草全草干品50g（新鲜者500g），加水煎煮，放蜂蜜10-15g，再煮5分钟，取药液内服。每天两次，连服30天为一疗程。加工炮制 采收加工
The narrow-leaved Houttuynia cordata variety is effective in treating chronic bronchitis. The variety with fewer flowers (1-3 or 4) is designated as the "few-flower Houttuynia cordata." For each dose, take 50g of dried few-flower Houttuynia cordata (or 500g of fresh), boil it in water, add 10-15g of honey, then continue boiling for 5 minutes before consuming the liquid. This should be taken orally twice a day for 30 consecutive days as one course of treatment. Processing and preparation are required during harvesting.

夏、秋季采收，鲜用或切段晒干。植物学信息 植物种属
Harvest in summer or autumn, and use fresh or cut into sections and sun-dried. Botanical information: Plant species.

雨久花科植物鸭舌草。形态特征
Duckweed is a long-lasting flowering plant in the Araceae family. Its morphological characteristics include...

水生草本；根状茎极短，具柔软须根。茎直立或斜上，高（6-）12-35（-50）厘米，全株光滑无毛。叶基生和茎生；叶片形状和大小变化较大，由心状宽卵形、长卵形至披针形，长2-7厘米，宽0.8-5厘米，顶端短突尖或渐尖，基部圆形或浅心形，全缘，具弧状脉；叶柄长10-20厘米，基部扩大成开裂的鞘，鞘长2-4厘米，顶端有舌状体，长约7-10毫米。总状花序从叶柄中部抽出，该处叶柄扩大成鞘状；花序梗短，长1-1.5厘米，基部有1披针形苞片；花序在花期直立，果期下弯；花通常3-5朵（稀有10余朵），蓝色；花被片卵状披针形或长圆形，长10-15毫米；花梗长不及1厘米；雄蕊6枚，其中1枚较大；花药长圆形，其余5枚较小；花丝丝状。蒴果卵形至长圆形，长约1厘米。种子多数，椭圆形，长约1毫米，灰褐色，具8-12纵条纹。花期8-9月，果期9-10月。分布区域
Aquatic herb; rhizome extremely short, with soft rootlets. Stem erect or ascending, (6-) 12-35 (-50) cm high, smooth and hairless throughout. Leaves basal and cauline; leaf shape and size vary greatly, ranging from broadly ovate to lanceolate, 2-7 cm long, 0.8-5 cm wide, with a short acuminate or gradually tapering apex, rounded or shallowly cordate base, entire margin, and arcuate veins; petiole 10-20 cm long, base expanded into a split sheath, sheath 2-4 cm long, with a ligule at the apex, about 7-10 mm long. Inflorescence arising from the middle of the petiole, where the petiole expands into a sheath; peduncle short, 1-1.5 cm long, with 1 lanceolate bract at the base; inflorescence erect during flowering, bending downward during fruiting; usually 3-5 (rarely more than 10) blue flowers; sepals ovate-lanceolate or oblong, 10-15 mm long; pedicel less than 1 cm long; stamens 6, one of which is larger; anthers oblong, the remaining 5 smaller; filaments threadlike. Capsule ovoid to oblong, about 1 cm long. Numerous seeds, ellipsoid, about 1 mm long, gray-brown, with 8-12 longitudinal stripes. Flowering period from August to September, fruiting period from September to October. Distribution area.

分布于全国各地。生长环境
Distributed throughout the country. Growing environment.

生于潮湿地或稻田中。
Born in damp areas or rice fields.