別名:

di lei gong, di wen

三不掉、裂刀草、地巴豆、 麻芋果、

地雷公、地文

燥濕祛痰，止嘔，散結消痞，催吐，鎮靜，降眼壓。

1. Sheng ban xia: raw, not processed. It is washed, rid of external skin, and fine roots then dry under the sun. It is toxic. Usually it is for external use.
2. Qing ban xia: those have been soaked in alum water solution. Often it is used in transforming phlegm
3. Jiang ban xia: those have been soak in ginger (jiang) and alum solution. It is effective in stopping vomiting.
4. Fa ban xia: those have been soak in gan cao and lime water solution. It is effective in getting rid of dampness.
5. ban xia ju: made from ground fa ban xia with added wheat flour and make into the shape of cookie and fermented. It is effective in transforming phlegm and in helping digestion.

1. 生半夏﹕加清水浸泡，至切開中心無白心時﹐取出，瀝乾水份。切片约３ｍｍ厚。晒乾或用文火烘乾。生半夏力強而有毒﹐外用於消腫散結。因有毒一般不內服。

2. 
   清半夏：經白礬水浸漬者。常用於化痰。

3. 
   姜半夏：用生薑、白礬水浸漬者。常用於止嘔。

4. 
   法半夏：經甘草、石灰液浸漬者。常用於燥濕。

5. 
   半夏麴：法半夏研細加麵粉，製成餅狀並發酵者。常用於化痰消食。

藥理:

化學成份: 

3,4-dihydroxybenzaldehyde; coniine; protoanemonin.

1-ephedrine hydrochloride^[1], guanosine. homogentisic acid 鳥苷高龍胆酸.

4.5 to 12 g. According to Ke Xue Zhong Yao: 0.5 to 2 g

per day. Adjust the dosage according to syndrome and

body condition.

4.5 to 12 克。濃縮中藥：0.5～2.0克 。可依病症

與體質酌量增減使用量。

常用配方:

do not use in any cough with bleeding due to yinxu. Use caution in cases of heat. Not compatible with wu tou.

Raw ban xia (sheng ban xia) is very toxic.

Antidote: use sheng jiang (raw ginger) juice, or just sheng jiang (ginger) mung bean, fang feng, gan cao to make into decoction. Drink frequently to rid of toxin.

陰虛咳血不可用。有熱者小心應用。反烏頭。生半夏有大毒。

中毒可用生薑汁或生薑、綠豆、防風、甘草煎湯頻服以解毒。