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Coptis Rhizome

황련 (黃連) · Coptis chinensis Franch.
Heat-clearing, damp-drying herb Cold Bitter Heart (Hand Shaoyin channel)
NatureCold
TasteBitter
MeridiansHeart (Hand Shaoyin channel)
Part usedRhizome
FamilyRanunculaceae
CategoryHeat-clearing, damp-drying herb
Find by concern: Red eyesMouth ulcersIrritability

Overview

Coptis is the archetypal bitter-cold herb of Korean medicine, so bitter that the proverb "bitterer than coptis" is still used. The Donguibogam lists it as an imported (唐) medicine and records a quality test you could do by ear: good coptis has joints like linked pearls, is hard and heavy, and rings when two pieces are struck together. Its processing notes are among the most detailed in the book — the same root is fried in wine, ginger juice, evodia water, yellow earth, or salt water to send its action to a different place.

In the Donguibogam

東醫
寶鑑
性寒, 味苦, 無毒. 主明目, 止淚出, 鎭肝, 去熱毒, 點赤眼昏痛. 療腸澼下痢膿血, 止消渴. 治驚悸煩躁, 益膽, 療口瘡, 殺小兒疳蟲.
Source: Donguibogam, Tangaek-pyeon (Herbology volume)
TranslationIts nature is cold, its taste bitter, and it is non-toxic. It mainly brightens the eyes, stops tearing, settles the liver, and removes heat-toxin; applied as drops, it treats red, dim, painful eyes. It treats dysenteric diarrhea with pus and blood and stops wasting-thirst. It treats fright palpitations and agitation, benefits the gallbladder, heals mouth sores, and kills childhood parasitic infestation.

Traditional uses recorded in the Donguibogam

  • Clears heat and drains fire
  • Dries damp heat
  • Brightens the eyes
  • Clears heart heat, eases agitation

Traditional applications recorded in the classical text

  • Red, painful eyes
  • Mouth sores
  • Dysenteric diarrhea with pus and blood
  • Agitation and fright palpitations

Traditional preparation

Harvested in the 2nd or 8th lunar month; remove the fine hairs before use. Raw drains true fire; wine-fried sends action upward to head, eyes, mouth; ginger-juice-fried for rushing heat; evodia-water-fried harmonizes the stomach; salt-water-fried for lower-burner hidden fire.

This describes traditional preparation recorded in the classics, not a recommendation for use today. DonguiHub does not provide dosage guidance — consult a qualified professional before using any herb.

Cautions

Caution: The Donguibogam records no toxicity, but it is among the coldest and most drying herbs in the text; the classics themselves use heavy processing to temper it. Traditionally unsuitable for a cold, weak stomach and not for prolonged unsupervised use. Consult a professional.
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Frequently asked questions

How did the classics test coptis quality?

By form and sound: the joints should look like linked pearls, the root should be hard and heavy, and two pieces struck together should ring — a quality test the Donguibogam records directly.

Why are there so many different ways of frying it?

Because the text treats processing as a way to steer the herb: wine carries it upward to the head, eyes and mouth; ginger juice helps with rushing heat; evodia water protects the stomach; yellow earth is for food stagnation; salt water reaches the lower burner.

Is coptis a Korean native herb?

The entry is marked 唐 — an imported medicine from China — which the Tangaek-pyeon uses to distinguish it from native (hyangyak) herbs.

Sources