Formulas · Clear Heat 淸熱 · Boncho (本草)

Licorice and Black Bean Decoction

Gamdu-tang

한글 감두탕  ·  Pinyin Gan Dou Tang

甘豆湯

This entry was first registered from the Fire chapter's 黑豆 single-remedy leaf, which does not set the formula up but only names it — 黑豆 二合ㆍ甘草 二錢ㆍ生薑 七片, 水煎服, 名曰甘豆湯, from the 入門. This leaf, at 2.9.39 通治百物毒, is the formula's own, from the 本草, with 甘草ㆍ黑豆 各五錢 and 竹葉 or 薺苨 as optional additions. The two are the same prescription recorded in two sources — licorice and black soybean decocted, given as the general antidote — so the leaf is filled into the existing id rather than registered twice, and this leaf is printed as the source_hanja. The 入門 reading's ginger is kept in the ingredient list with its own prep note, and the book's own attribution for the formula is corrected to the 本草, which is where its own leaf stands. The Resolving Toxins chapter's prose line immediately above the leaf states 甘豆湯爲解毒第一 — Gamdu-tang is first among the toxin-resolvers.

Composition 構成

Total 40 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

Indications 主治

Pattern-based

  • 百藥百物毒 — the toxin of every drug and every substance
  • Heat toxin with vexing thirst
  • Bound stool and rough urination from heat

Biomedical correlates

  • Suspected poisoning — the corpus's general antidote
  • Heat presentations with constipation

Source text 原文

Donguibogam 東醫寶鑑

甘草ㆍ黑豆, 皆解百藥百物毒. 各取五錢, 作一貼, 水煎取汁, 溫冷任意服之, 神效. 或加竹葉, 或加薺苨尤效. 《本草》

Translation

Licorice and black soybean both resolve the toxin of every drug and every substance. Take 5 don of each, make one packet, decoct in water and take the liquor, warm or cool as the patient likes; divine effect. Bamboo leaf may be added, or adenophora, for still greater effect. — Boncho 本草 (Donguibogam · Haedok)

Clinical commentary 臨床

Two foods in equal weight, and the plainest formula in the book. The Resolving Toxins chapter makes it the first of all antidotes — 甘豆湯爲解毒第一 — and the 醫鑑's rule a few leaves earlier says the same thing in general terms: 大法甘草菉豆能解百毒, licorice and bean resolve the hundred toxins. 獨勝散 is the licorice half alone and 國老飮 pairs the root with alum, so this decoction is the centre of the chapter's whole pharmacology of antidotes. 溫冷任意服之 — warm or cool as the patient likes — is unusual and worth noticing, since the Bogam is normally strict about the temperature at which a decoction is taken. Here the point is to get fluid in, and the two optional additions are both cooling: 竹葉, bamboo leaf, for vexation and thirst, and 薺苨, adenophora, which the materia medica treats as an antidote drug in its own right. Neither licorice nor black soybean is an antidote. What the decoction is, honestly read, is warm sweet fluid for someone frightened, hot and thirsty, and that is harmless and probably of some comfort — but a poisoning is an emergency and this is not treatment for one. Taken in quantity over time licorice causes potassium loss and raised blood pressure. — Eui Young (Justin) Chung, L.Ac., Dipl. O.M.

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