Formulas · Invigorate Blood 活血祛瘀 · Immun (入門)

Resistance Decoction

Jeodang-tang

한글 저당탕 · Pinyin Di Dang Tang

抵當湯

Counted by the piece rather than by weight, so grams are given as 0 for the three animal and kernel drugs.

Composition 構成

Daehwang Da Huang
大黃 대황 · Rhubarb

12 g
Chief 君

steamed
Sujil Shui Zhi
水蛭 수질 · Leech

—
Chief 君

ten, parched
Maengchung Meng Chong
䖟蟲 맹충 · Gadfly

—
Chief 君

ten, parched, feet and wings removed
Doin Tao Ren
桃仁 도인 · Peach Kernel

—
Deputy 臣

ten, tips left on

Total 12 g per packet (첩) · representative dosage — verify against source texts. Excludes 3 ingredients 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

Breaks up static blood
Purges blood bound in the chest and lower abdomen

Indications 主治

Pattern-based

Static blood bound in the chest with delirium and rinsing the mouth without swallowing
Blood accumulation with madness and black stool

Biomedical correlates

Pelvic or mesenteric haematoma
Deep venous thrombosis with delirium

Source text 原文

Donguibogam 東醫寶鑑

治一切瘀血ㆍ結胸ㆍ譫語ㆍ漱水等證. 水蛭(炒)ㆍ䖟蟲(炒, 去足翅)ㆍ桃仁(留尖) 各十枚, 大黃(蒸) 三錢. 右剉, 作一貼, 水煎服. 《入門》

Translation

Treats all static blood, chest bind, delirious speech, rinsing the mouth with water and the like. Parched leech; parched gadfly with feet and wings removed; peach kernel with the tips left on, ten of each; steamed rhubarb, 3 don. Cut up, make one packet and decoct in water. — Immun 入門 (Donguibogam · Han, lower)

Clinical commentary 臨床

The strongest blood-breaking formula in Zhongjing and the one that defines the category. Leech and gadfly are both blood-feeders and both carry genuine anticoagulant activity — hirudin from the leech is the ancestor of a modern drug class — so the choice is not symbolic. Peach kernel with the tips left on is deliberate: the tip is the growing point and the part held to move blood hardest. Rhubarb steamed rather than raw purges less and enters the blood more. The diagnostic sign the text leans on, rinsing the mouth without wanting to swallow, is the classic marker of blood rather than fluid heat, and it is still useful at the bedside. — Eui Young (Justin) Chung, L.Ac., Dipl. O.M.