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Job's Tears

율무 (薏苡仁) · Coix lacryma-jobi L. var. ma-yuen (Rom.Caill.) Stapf
Dampness-draining, water-disinhibiting herb Slightly cold (some sources: neutral) Sweet Spleen, Stomach, Lung
NatureSlightly cold (some sources: neutral)
TasteSweet
MeridiansSpleen, Stomach, Lung
Part usedSeed
FamilyPoaceae
CategoryDampness-draining, water-disinhibiting herb

Overview

Job's tears is popular today as a diet and skin-care grain, but the Donguibogam notes something modern fans often miss: its action is gentle and slow, so it must be used in larger amounts than other herbs to show effect — a genuine reason it works best as a food eaten regularly rather than a quick fix.

In the Donguibogam

東醫
寶鑑
性微寒一云平, 味甘, 無毒. 主肺痿肺氣吐膿血咳嗽. 又主風濕痺, 筋脉攣急, 乾濕脚氣.
Source: Donguibogam, Tangaek-pyeon (Herbology volume)
TranslationIts nature is slightly cold (some say neutral), its taste sweet, and it is non-toxic. It mainly treats lung wasting and lung-qi conditions with coughing up pus and blood. It also treats wind-damp painful obstruction, tendon spasm and contracture, and both dry and damp forms of leg qi.

Traditional uses recorded in the Donguibogam

  • Drains dampness
  • Strengthens the spleen
  • Relieves wind-damp painful obstruction
  • Clears lung heat

Traditional applications recorded in the classical text

  • Chronic cough with phlegm or blood-tinged sputum
  • Wind-damp joint pain
  • Muscle cramps or spasm
  • Leg swelling and heaviness

Traditional preparation

Also eaten regularly as a grain or porridge.

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 classics note its effect is gentle and slow, requiring larger amounts used consistently; not suited to pregnancy in concentrated medicinal doses without professional guidance. Consult a professional.
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Frequently asked questions

Why do some people say Job's tears "doesn't work fast enough"?

The Donguibogam itself explains this: its action is gentle and slow, so it must be used in larger amounts and more consistently than sharper-acting herbs — it is better suited to regular use as a food than a quick remedy.

What did the Donguibogam record it for, beyond diet and skin?

Primarily lung conditions with coughing up phlegm or blood, and wind-damp joint pain and leg swelling (脚氣) — uses distinct from its modern diet-food reputation.

Sources