Traditional Chinese Medicine Healing Herbs(TCMHH)

Drastic Hydragogues

Ba Dou: Chinese Herb Guide

Purging Croton Fruit 巴豆 Fructus Crotonis
By the TCMHH editorial team Not medically reviewed How we work Updated 6 Oct 2026
Ba Dou: Chinese Herb Guide
Ba Dou: Chinese Herb Guide
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Ba Dou

Ba Dou 2

Naming

Ba Dou (Purging Croton Fruit)

The Effect of Ba Dou

Property

Pungent, hot, toxic, stomach, large intestine, and lung meridians entered.

Actions

Remove cold accumulation with drastic purgative; expel water and alleviate edema; dispel phlegm and relieve sore throat; corrode wound and kill parasites.

Indications

Constipation due to accumulation of cold; milk and food stagnancy; hydroperitoneum and tympanites; throat obstruction and phlegm stagnation; abscess before diabrosis; scabies, tinea and malignant ulcer.

Dosage and Administrations

0.1~0.3 g, used in powder or pill after frostbitten, proper dose is for topical use.

Cautions

It is contraindicated to the pregnant women and valetudinarian, and is incompatible with Qian Niu Zi.

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Sources and further reading

We cite classical materia medica and modern reference works. This article is health education, not medical advice.

  • Shennong Bencao Jing (The Divine Farmer's Materia Medica), Han dynasty.
  • Bencao Gangmu (Compendium of Materia Medica), Li Shizhen, 1578.
  • Chinese Pharmacopoeia, current edition — identity, quality and safety monographs.
  • NCCIH and WHO reference material on traditional medicine safety.

Spotted an error or a better source? Tell us — corrections are logged on our editorial policy page.

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