Educational information, not medical advice — ask your doctor or midwife.
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Susu is the Korean name for sorghum grain, from the plant Sorghum bicolor. In Korea it has long been eaten as a warming food grain and used in folk practice for weak digestion and loose stools. It is also known simply as sorghum.
Most people meet it as a food rather than a medicine. The red-brown grain is cooked with rice, ground into flour for rice cakes, or boiled into porridge for people recovering from illness.
Here is the honest verdict. Susu has a real place in Korean kitchens and folk practice, but long traditional use is not the same as proof that it treats any illness, and the human trial evidence for medicinal claims is very thin.
Any effect is most likely nutritional rather than drug-like. Sorghum is a whole grain, so it is high in fibre and digests slowly, which can blunt the rise in blood sugar after a meal compared with white rice.
The darker grain also carries tannins (plant compounds with a dry, puckering taste). In laboratory dishes these act as antioxidants and bind protein, which is the usual explanation offered for the traditional use in loose stools.
This is a reasonable theory, not a demonstrated mechanism. Laboratory activity often fails to show up in people.
Susu is sold as a food, not as a standardised medicine. Common forms include:
Whole dried grain for cooking with rice. Coarse or fine flour for rice cakes and pancakes. Flaked or puffed grain for porridge and snacks.
Sorghum syrup as a sweetener. Fermented sorghum liquor, which is a drink rather than a remedy.
You may also see sorghum bran extracts in supplement blends. These are not well characterised and doses vary widely between products.
Sorghum came to Korea from China and has been grown on dry upland fields for well over a thousand years. It fed households when rice was short.
In Korean folk practice the cooked grain was given for a weak stomach, poor appetite and watery stools, and susu-bukkumi (sorghum pancakes) and red sorghum rice cakes appear at birthdays and rites of passage.
It holds a similar place in Chinese, Indian and West African food traditions, where it is a staple grain rather than a formal medicine.
See a doctor if diarrhoea lasts more than two days, or if you see blood in your stool, have a fever, or feel dizzy and dried out.
Get medical help the same day if you have belly pain that keeps getting worse, ongoing vomiting, or you cannot keep fluids down.
Call emergency services if you have trouble breathing, swelling of the lips, tongue or throat, or a sudden widespread rash after eating sorghum. Do the same if anyone has eaten fresh sorghum leaves or shoots and becomes confused, breathless, blue around the lips, or collapses.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
Reviewed by the HealisticMD editorial team How we grade evidence →
The published evidence for Susu is weak or absent. That usually means no controlled trial has tested it, not that a trial found it ineffective — the two are different, and we grade only what has been published.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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