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Gua Di San (瓜蒂散) induces vomiting to expel phlegm or undigested food stuck in the chest and upper epigastrium; the principal emetic formula, used rarely and with great care.
English Name
Melon Pedicle Powder
Classical Source
Shang Han Lun, c. 220 CE
Ingredients
- Gua Di (melon pedicle, emetic) & Chi Xiao Dou
- taken with a decoction of Dan Dou Chi
Actions & Functions
- Induces vomiting to expel phlegm or food from the chest/epigastrium
Indications
Phlegm or food lodged in the chest and upper epigastrium: a stifling, hard fullness of the chest with a desire to vomit but inability to do so, irritability, and laboured breathing; also some poisonings.
Tongue & Pulse
Tongue: greasy coat. Pulse: floating (or slippery) in the front position.
Modifications
Stop as soon as vomiting occurs; rarely used today.
Cautions & Contraindications
Gua Di is toxic - small doses only; contraindicated in deficiency, bleeding, pregnancy and the frail. Use only with expertise.