Formulas · External Application 外用 · Uihak Immun (醫學入門)

Great Purslane Salve

Daemachi-go

한글 대마치고 · Pinyin Da Ma Chi Gao

大馬齒膏

The collation line 前隂 : 風門 stands at the foot of this leaf, at the page break before [051a], but the word it annotates is not in this leaf: it is the 方見前陰 cross-reference to 四生散 in the 腎臟風瘡 section text some seven lines earlier, where the 初刊本 reads 方見風門 instead. It is recorded here only because it falls inside this leaf, and no change has been made on its authority. 桐油, tung oil, has no identifier in the herb list; the leaf gives sesame oil as the alternative and that is what is registered.

Composition 構成

Machihyeon Ma Chi Xian
馬齒莧 마치현 · Purslane

20 g
Chief 君

焙乾, dried over gentle heat
Hwangdan Huang Dan
黃丹 황단 · Red Lead (toxic)

12 g
Deputy 臣

lead tetroxide, toxic
Hwangbaek Huang Bai
黃柏 황백 · Phellodendron

12 g
Deputy 臣
Baekban Bai Fan
白礬 백반 · Alum

12 g
Deputy 臣

枯礬, calcined to dryness
Haeacha Hai Er Cha
孩兒茶 해아차 · Catechu (black cutch)

12 g
Assistant 佐
Gyeongbun Qing Fen
輕粉 경분 · Calomel (toxic)

4 g
Assistant 佐

calomel, mercurous chloride · severely toxic
Cheongyu Qing You
淸油 청유 · Clear Sesame Oil

—
Envoy 使

麻油, the second-named vehicle; the leaf names 桐油 first

Total 72 g per packet (첩) · representative dosage — verify against source texts. Excludes 1 ingredient measured by count or used as a vehicle, shown as —.

Received this formula from your practitioner? Amounts shown here are classical reference values — granule and prepared products differ. Always follow your prescribed dosage and directions.

Actions 效能

Treats the blood wind sore of both legs
Spread on oiled paper and laid on after the sore has been irrigated and blotted dry

Indications 主治

Pattern-based

血風瘡 — the blood wind sore of both legs
Wind-heat with dryness of the blood in the three yin channels
Itching that is not constant, with pus and fluid running

Biomedical correlates

Chronic eczema of the lower legs — external use
Stasis dermatitis with exudate

Source text 原文

Donguibogam 東醫寶鑑

治兩足血風瘡. 馬齒莧(焙乾) 五錢, 黃丹ㆍ黃栢ㆍ枯礬ㆍ孩兒茶各三錢, 輕粉一錢. 右爲末, 桐油或麻油調勻, 攤油紙上, 先以藥水淋洗, 挹乾後乃貼之. 《入門》

Translation

Treats the blood wind sore of both legs. Purslane dried over gentle heat, 5 don; red lead, phellodendron, calcined alum and catechu, 3 don each; calomel 1 don. Powder the above, stir it evenly with tung oil or sesame oil, spread it on oiled paper; first irrigate the sore with the medicinal wash, and after blotting it dry, lay the paper on. — Immun 入門 (Donguibogam · Jechang)

Clinical commentary 臨床

Purslane dried and powdered leads, with phellodendron and catechu for the tannins and calcined alum for the drying, carried in oil and spread on paper rather than applied direct. The sequence matters more than the drugs: irrigate, blot dry, then dress — which is the order a wound clinic still uses, and the oiled paper keeps the powder from bonding to the surface. 血風瘡 is described at 2.12 as of a kind with 腎臟風瘡, from wind-heat and dryness of the blood in the three yin channels, with 瘙痒不常 and 膿水淋漓 and night sweats. The picture — both lower legs, itching in bouts, weeping, years long — is chronic eczema of the shins, usually with venous stasis behind it, and the formula is treating the surface of a problem that is in the veins. **Contains red lead and calomel, lead and mercury salts, and must not be prepared.** On eczematous skin over both legs the absorbing area is very large, and calomel applied to dermatitis is a documented cause of mercury poisoning. Purslane, phellodendron and catechu without the metals are a reasonable astringent dressing. — Eui Young (Justin) Chung, L.Ac., Dipl. O.M.