Educational information, not medical advice — ask your doctor or midwife.
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Sogye is a dried herb used in Korean medicine, mainly to slow bleeding. It comes from the field thistle, Cirsium setosum. Practitioners have given it for blood in the urine, nosebleeds, and heavy periods.
Sogye is a single drug (Korean). That means it is one plant, not a mixed formula, although it is often added to formulas. You may also see it called field thistle or small thistle.
Here is the short verdict: the traditional record is long, but human trial evidence is almost absent. Traditional use tells you what people have done for centuries; it is not proof that the herb works. That point is made here once and applies to every section below.
No one has shown how sogye works in the human body. The honest answer is that the mechanism is unproven.
In Korean and Chinese practice, sogye is described as a cooling herb that calms "hot" bleeding and clears heat from the blood. That is a traditional way of sorting symptoms, not a description of body chemistry.
Lab and animal studies report that some of its plant chemicals can shorten bleeding time, narrow small blood vessels, and lower blood pressure. These are test-tube and animal findings. They do not tell you what a cup of the tea does in a person.
The usual form is the dried above-ground plant, cut for making a decoction (a tea made by simmering herbs). This is how it appears in most Korean prescriptions.
You may also meet it as a charred herb. Charring, called tanchan, is a traditional roasting step said to strengthen its bleeding-related use.
Other forms include fresh juice from the crushed plant, powders, and granule extracts made for practitioners. Sogye is more often one part of a multi-herb formula than a stand-alone product.
Sogye has a long record in East Asian herbal medicine. Chinese materia medica texts list it under the name xiao ji, and Korean medicine adopted it in the same role.
It appears in Korean practice as a bleeding-related herb, often paired with the larger thistle, daegye (Cirsium japonicum). Korean country people also ate the young shoots as a wild green.
Its standing rests on centuries of use by practitioners, not on trials.
See a doctor straight away if you cough up blood, vomit blood, pass black tarry stools, or bleed heavily from the nose or vagina. These need a diagnosis, not a herb.
Book a normal appointment if you see blood in your urine even once, if your periods are getting heavier, or if you bruise more easily than before.
Stop sogye and get advice if you feel faint or dizzy, if a rash or swelling appears, or if any bleeding does not settle within a few days.
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 sogye 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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