Pharmaceutical name: 英文藥名﹕	Herba cum Radice Violae Yedoensitis
Botanical name: 學名﹕	Viola yedoensis Mak Viola chinensis   G. Don.
Pron. in Japanese: 日語發音﹕	shikajicho
Pron. in Korean: 韓語發音﹕	chahwachi
Pron. in Cantonese: 粵音﹕	zi2 faa1 dei6 ding6
Other Names: 別名﹕	di ding cao 地丁草
Common Name: 英文名﹕	Yedeon's vilet, viola
Distribution: 產地﹕	Jiangsu, Zhejiang, Anhui, and all northeastern China. 江 蘇 ﹐  浙 江 ﹐  安 徽 ﹐ 東 北 各 地 。
Properties (characteristics)﹕ 性味﹕	acrid, bitter, cold. 辛 ﹐ 苦 ﹐ 寒 。
Channels (meridians) entered:   歸經﹕	heart, liver. 心 ﹐ 肝 。
Medical functions: 藥理﹕	To certain degree, inhibits Saphylococcus aureus, pneumonococcus Streptococcus A, Streptococcus B, Escherichia coli, Hemophilus Influenzae, Corynebacterium diphtheriae, Pseudomonas aeruginosa, Staphylococcus albus, Candida albican. The extract of zi hua di ding, within non-toxic concentration, can totally inhibit the growth of HIV. The extract of dimethylsulfoxide of zi hua di ding possesses a very strong inhibitive effect on in-vitro HIV activities. 對金黃色葡萄球菌﹐ 肺炎球菌﹐ 甲型鏈球菌﹐ 乙型鏈珠菌﹐ 大腸桿菌﹐ 流感桿菌﹐ 白喉桿菌﹐ 綠膿桿菌﹐ 白色葡萄球菌﹐ 白色念球菌有不同程度的抑制作用。紫花地丁提取物在低於毒性劑量的濃度下，可完全抑制艾滋病毒（HIV）的生長，紫花地丁的二甲亞砜提取物具有很強的體外抑制HIV活性
Actions & Indications: 主治﹕	Snake bite: use fresh zi hua di ding to make juice and take internally. Also combine a small amount of xiong huang,. smash and apply externally. Red eyes, boils with liver yang ascending :  combine this herb with ju hua, chan tui and make into decoction and use as tea. 用治毒蛇咬傷 ﹕ 用鮮 品搗汁 内服，亦可配雄黃少 許 ，搗 爛 外敷。 肝陽 上 亢 目赤腫 瘤 ﹕本 品  配 菊 花、蟬 蛻 等
Chemical ingredients: 化學成份﹕	palmitic acid, p-hydroxybenzoic acid, trans-p-hydroxycinnamic acid, butane-dioic acid, tetracosanoyl-p-hydroxy phenethylamine, kaempferol-3-Omega-rhamnopyranoside.
Dosage: 用量﹕
Samples of formulae :處方舉例﹕	Name of Formula: zi hua di ding san (Zheng Zhi Zhun Sheng)  Applications: for boils Composition: zi hua di ding, dang gui﹐ da huang  ﹐ chi shao yao﹐ jin yin hua﹐ huang qi﹐ gan cao 紫花地丁散(證 治 準  繩 》：紫花地丁﹐ 當 歸﹐ 大黃  ﹐ 赤芍﹐ 金銀花﹐ 黃 耆﹐ 甘 草。治諸瘡腫痛。
Modern Research: 現代研究﹕
Toxicity & Cautions: 毒素與禁忌﹕	Not to use in cases of pixu (spleen deficient) . 脾虛者禁忌 用 。