大戟 Da Ji / Radix Euphorbiae Pekinensis

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SKU: TWH D026 Category:

Description

大戟(学名:Euphorbia pekinensis Rupr. )是大戟科,大戟属多年生草本植物,高可达80厘米。根圆锥状。茎直立,被白色短柔毛,上部分枝。叶片互生。矩圆状披针形至披针形。杯状花序总苞坛形。蒴果三棱状球形,表面具疣状突起。种子卵形,光滑。生长于 山坡、路边、荒坡或草丛中 。靠种子繁殖。 [1]
根入药,逐水通便,消肿散结,主治水肿,并有通经之效;亦可作兽药用;有毒,宜慎用。 [2]
味苦,性寒,有毒。入肺、脾、肾经。主治水肿胀满、痰饮积聚、痈肿疔毒、二便不通。也可用于痰饮积聚,胸膈胀满,胁肋隐痛。消肿散结可用于痈肿疮毒及痰火瘰疠,内服外用均可。
性味:苦辛,寒,有毒。
 
归经:入肺、脾、肾经。
《本草经疏》:”入肾、肝。”  
《本草通玄》:”入肝、膀胱。” 
《得配本草》:”入三阴,足太阳经。” 
功用主治:泻水沈,利二便。治水肿,水臌,痰饮,瘰疬,痈疽肿毒。
 
用法与用量:内服:煎汤,0.5~1钱;或入丸、散。外用;煎水熏洗。

Indications

A. Edema, tympanites and hydrothorax

It has a similar but less drastic action than that of Gan Sui, and commonly indicated for edema, tympanites and hydrothorax without deficiency of original qi. It is often combined with Gan Sui and Yuan Hua, as in Shi Zao Tang from Shang Han Lun.

B. Sores and abscess

It has the action of relieving swelling and dissipating nodulation when being used topically. For sores and abscess due to heat-toxin, the fresh root can be applied externally after pounded, or used in combination with the herbs of removing toxicity, curing abscess, and dissipating nodulation.

Dosage and Administrations

0.5~1g used in pills or powder for each time. Proper dosage is for topical administration. It should be processed with vinegar to weaken its toxins when taking orally.

Cautions

It is contraindicated to pregnancy and valetudinarian, and antagonistic to Gan Cao.

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