乌桕子，中药名。为大戟科乌桕属植物乌桕Sapiumsebiferum（L.）Roxb.的种子。植物乌桕，分布于我国黄河以南各省区，北达陕西、甘肃。具有拔毒消肿，杀虫止痒之功效。主治湿疹，癣疮，皮肤皲裂，水肿，便秘。
Wu-jiu-zi, name of Chinese Medicinal Material. the seed of the plant Sapium sebiferum (L.) Roxb. in the Euphorbiaceae family. The plant is distributed in various provinces and regions south of the Yellow River in China, reaching as far north as Shaanxi and Gansu. It is known for its detoxifying and anti-inflammatory properties, as well as its ability to kill insects and relieve itching. It is used to treat eczema, ringworm, cracked skin, edema, and constipation.

功效作用 功能
Efficacy and Functions

拔毒消肿，杀虫止痒。主治
Detoxifying and reducing swelling, killing parasites and relieving itching. Mainly used for...

湿疹，癣疮，皮肤皲裂，水肿，便秘。用法用量
Eczema, ringworm, skin fissures, edema, constipation. Dosage and administration.

内服：煎汤，3-6g。外用：适量，煎水洗；或捣敷。注意事项
Internal use: Decoction, 3-6g. External use: appropriate amount, decoct with water for washing; or apply as a poultice. Precautions.

有毒，大剂量内服宜慎。药理作用
Toxic, caution should be taken when taken in large doses. Pharmacological effects.

致炎作用。相关论述
Inflammatory effects. Relevant discussions.

1、《日华子》：“作汤下水气。”2、《天宝本草》：“通肠利便，走小腹，大便闭结，水肿满，寒火结胞宜早服。”3、《福建药物志》：“杀虫止痒，拔毒散肿。治脚癣。”临床应用 相关配伍

1. "Rihuazi": "Make a soup to clear water retention."2. "Tianbao Bencao": "Promotes bowel movements, relieves lower abdominal pain, treats constipation, edema, and cold-fire accumulation. It is advisable to take it early."3. "Fujian Materia Medica": "Kills parasites, relieves itching, detoxifies, reduces swelling. Used to treat athlete's foot." Clinical applications and relevant combinations.

1、治湿疹，乌柏种子（鲜）杵烂，包于纱布内，擦患处。（《闽东本草》）2、治竹木刺入肉，乌柏种子合冷饭粒捣烂敷患处，刺即逐渐浮出。（《泉州本草》）3、治手足皲裂，乌桕子煎水洗。（江西《草药手册》）加工炮制 采收加工

1. To treat eczema, grind fresh Chinese sumac seeds and wrap them in gauze, then apply to the affected area. (From "Minnan Materia Medica")2. To treat splinters of bamboo or wood embedded in the flesh, grind Chinese sumac seeds with cold rice grains and apply the mixture to the affected area. The splinter will gradually come out. (From "Quanzhou Materia Medica")3. To treat cracked hands and feet, boil Chinese lacquer tree seeds in water and use the decoction to wash the affected areas. (From "Jiangxi Herbal Manual") Processing and preparation: harvesting and processing.

果熟时采摘，取出种子，鲜用或晒干。植物学信息 植物种属
When the fruit is ripe, it is picked, the seeds are taken out, and can be used fresh or dried in the sun. Botanical information: Plant species.

大戟科乌桕属植物乌桕。形态特征
Euphorbia jatropha, a plant belonging to the Euphorbiaceae family. Morphological characteristics.

植物乌桕，别名乌柏木《新修本草），鸦臼《纲目》，木子树《植物名实图考》，棕白树、卷子树、红心郎《云南药用植物名录》，木蜡树、木油树《中国高等植物图鉴》，琼树、蜡子树、血血木、桕子树、蜡树《中药大辞典》，桕树、木梓树、虹树、蜡烛树《全国中草药汇编》，红乌桕、王京子《中国有毒植物》。为乔木，高可达15米许，各部均无毛而具乳状汁液；树皮暗灰色，有纵裂纹；枝广展，具皮孔。叶互生，纸质，叶片菱形、菱状卵形或稀有菱状倒卵形，长3-8厘米，宽3-9厘米，顶端骤然紧缩具长短不等的尖头，基部阔楔形或钝，全缘；中脉两面微凸起，侧脉6-10对，纤细，斜上升，离缘2-5毫米弯拱网结，网状脉明显；叶柄纤细，长2.5-6厘米，顶端具2腺体；托叶顶端钝，长约1毫米。花单性，雌雄同株，聚集成顶生、长6-12厘米的总状花序，雌花通常生于花序轴最下部或罕有在雌花下部亦有少数雄花着生，雄花生于花序轴上部或有时整个花序全为雄花。雄花：花梗纤细，长1-3毫米，向上渐粗；苞片阔卵形，长和宽近相等约2毫米，顶端略尖，基部两侧各具一近肾形的腺体，每一苞片内具10-15朵花；小苞片3，不等大，边缘撕裂状；花萼杯状，3浅裂，裂片钝，具不规则的细齿；雄蕊2枚，罕有3枚，伸出于花萼之外，花丝分离，与球状花药近等长。雌花；花梗粗壮，长3-3.5毫米；苞片深3裂，裂片渐尖，基部两侧的腺体与雄花的相同，每一苞片内仅1朵雌花，间有1雌花和数雄花同聚生于苞腋内；花萼3深裂，裂片卵形至卵头披针形，顶端短尖至渐尖；子房卵球形，平滑，3室，花柱3，基部合生，柱头外卷。蒴果梨状球形，成熟时黑色，直径1-1.5厘米。具3种子，分果爿脱落后而中轴宿存；种子扁球形，黑色，长约8毫米，宽6-7毫米，外被白色、蜡质的假种皮。花期4-8月。分布区域
The plant known as Sapium sebiferum, also called Chinese tallow tree, is mentioned in various Chinese botanical and medicinal texts such as "Newly Revised Materia Medica," "Outline of the Genera," "Illustrated Study of Plant Names and Realities," "List of Yunnan Medicinal Plants," "Chinese Encyclopedia of Higher Plants," "Dictionary of Chinese Medicine," "National Compilation of Chinese Medicinal Herbs," and "Toxic Plants in China." It is a tall tree that can reach up to about 15 meters in height, with all parts being hairless and containing milky sap. The bark is dark gray with longitudinal cracks, and the branches are wide-spreading with lenticels. The leaves are alternate, papery, rhombic, rhombic-ovate, or rarely rhombic-elliptic, 3-8 cm long and 3-9 cm wide, with a suddenly narrowed apex with unequal lengths of tips, a wide wedge-shaped or blunt base, and entire margins. The midrib is slightly raised on both sides, with 6-10 pairs of slender, obliquely ascending lateral veins, 2-5 mm away from the margin, forming arching loops, and prominent reticulate veins. The leaf stalk is slender, 2.5-6 cm long, with two glands at the apex, and the stipules are blunt at the apex, about 1 mm long. The flowers are unisexual, with male and female flowers on the same plant, clustered into terminal, 6-12 cm long racemes. Female flowers usually occur at the lowermost part of the raceme axis, with occasional male flowers below, while male flowers are located at the upper part of the raceme axis or sometimes the entire raceme consists of male flowers. Male flowers have slender pedicels, 1-3 mm long, becoming thicker upwards, with broadly ovate bracts, about 2 mm long and wide, slightly pointed at the apex, each with one kidney-shaped gland on each side, and each bract contains 10-15 flowers. Female flowers have stout pedicels, 3-3.5 mm long, with deeply 3-lobed bracts, each lobe gradually pointed, and similar glands on the sides as in male flowers, with only one female flower per bract and occasionally one female flower and several male flowers clustered in the axil of the bract. The fruit is a pear-shaped berry that turns black when ripe, with a diameter of 1-1.5 cm, containing three seeds, with the central axis persisting after the fruit valves fall off. The seeds are flattened spherical, black, about 8 mm long and 6-7 mm wide, covered with a white, waxy false seed coat. The flowering period is from April to August. Distribution area.

分布于我国黄河以南各省区，北达陕西、甘肃。生长环境
Distributed in various provinces and regions south of the Yellow River in China, reaching as far north as Shaanxi and Gansu. Growing environment.

生于旷野、塘边或疏林中。
Born in the wilderness, by the pond, or in sparse woods.