Crude drug sample data base

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Crude drug name

Market name苡米
Formal name薏苡仁
Japanese nameよくいにん，Yokuinin
Vernacular nameYiren
Latin nameCoicis Semen (JP), (CP)
English nameCoix Seed (JP), (CP)
Used partClassificationPlant origin
Sub classification kernel
Production area informationPeople's Republic of China, Hunan Prov.
Collection informationJapan（ToS）, Osaka Pref., Tochimoto Tenkaido Co., Ltd. [Non-commercial Sample]
Collection date2019/11/27
CollectorKatsuko Komatsu
TMPW No.30321

The capital city, provincial capital city or the representative　　
location of its administrative area is indicated.　　
28.228209
112.93881399999998
Production area information
People's Republic of China,Hunan Prov.
https://ethmed.toyama-wakan.net/img/pin_san.png
34.6937249
135.5022535
Collection information
Japan（ToS）,Osaka Pref.
https://ethmed.toyama-wakan.net/img/pin_nyu.png

Scientific information data base

Common name薏苡仁, Yiyiren, Coicis SemenJP,CP, Coix SeedJP,CP
crude drug image
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Original plant nameCoix lacryma-jobi L. var. mayuen Stapf, (Hatomugi)
original plant image
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Family nameGramineae
Used partmature seed w/o seed coat
Quality for selectionLarge, nearly white, fresh grains free from insect damage are considered to be of good quality (TN).
Official compendiumJP XIX, CP (2025 ed.)
Clinical applicationIt is used as a diuretic, anti-inflammatory, analgesic, and pus-discharging agent for edema, rheumatism, neuralgia-associated pain, and suppurative diseases. In folk medicine, it is used as a remedy for warts and as a nutritive tonic.
Medical systemTraditional Chinese medicine
Drug effect in
traditional medicine		Traditional
classification		Diuretics removing dampness
Beneficial effect[Property and Flavor] Cool;l sweet, bland.
[Meridian Tropism] Spleen, stomach and lung meridians.
[Actions] To promote urination to drain dampness, fortify the spleen to check diarrha, relieve impediment, expel pus, remove toxin and dissipate binds.
[Indications] Edema, tinea pedis, inhibited urination, diarrhea caused by spleen deficiency, spasm caused by fixed impediment, lung abscess, intestinal abscess, vegetation, tumor.
Chemical constituentLipids
(*C1):
Palmitic acid, Myristic acid, Linolic acid, cis-8-octadecenoic acidなどのglycerides

Other aliphatic and related compounds
(*C1):
Coixenolide

Polysaccharides
(*C1):
澱粉 / starch

Sterols
(*C1):
beta-Sitosterol, Campesterol, Stigmasterol

Amino acids
(*C1):
Glutamic acid, Leucine, Tyrosine, Valine

Alkaloids
根/root　(*C1):
Coixol

Chemical structure


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Pharmacological effectrespiratoy action (low dose; accelerated, high dose; palsy), pulmonary vasodilation.
DNA sequenceTraditioal Medical & Parmaceutical Database.
Classical reference
(Chinese Herbal Classic "Zhenglei bencao")		※Click this image to see the actual image
DiseaseEdema, Oliguria, Fever, Feeling of heavy and dull, Feeling of pressure in the chest, Diarrhea, Swelling and pain of joint, Numbness, Lung suppurations, Appendicitis, Muddy and watery stool, Leukorrhea
FormulationJinryobyakujutsusan, Makyoyokukanto, Choyoto, Toryuto, Yokuininto, Yokuininto, Yokuibushihaishosan, Ikeito, Ikeigoshijunto, Kashininto, Kikyoto, Shimotsutokakkekagen, Seishitsuto, Jiohanho, Choyotokashakuyaku, Botanpisan
ReferencesJP: The 19th edition of the Japanese Pharmacopoeia.
CP: Pharmacopoeia of the People's Republic of China 2025 edi.
C1)The Encyclopedia of Wakan-Yaku with Color Pictures Vol. I, pp 306-309.
RemarksYiyiren is the seed of Coix lachryma-jobi Linn. var. mayuen Stapf (Hatomugi in Jap.), from which the seed coat has been removed. The seed with the seed coat is commercially available under the name of Hatomugi or Yokuinin. In China it is called Yimi.
Last renewal date2026/07/17
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