Educational information, not medical advice — ask your doctor or midwife.
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Cheongung is the dried root of Cnidium officinale, a plant in the carrot family. In Korean traditional medicine it is used in mixtures aimed at period pain, headaches and dull body aches that practitioners link to sluggish circulation. It is a single herb, but it is almost never taken alone — it usually appears as one part of a multi-herb formula.
The root is thick, pale and strongly aromatic. It smells a little like celery and tastes warm and slightly bitter, which is why it is often decocted (simmered in water) rather than eaten.
Here is the honest verdict up front: the laboratory and animal work on Cheongung is reasonably active, but published human trials of this single herb are very scarce. Long traditional standing tells you that people have relied on it for centuries; it does not tell you the herb works in the body. Those are two separate questions, and only one of them has really been tested.
No one has shown what Cheongung does inside the human body. What follows is a mix of traditional reasoning and early lab findings, not proven action.
In Korean traditional theory, Cheongung is a "blood-moving" herb. Practitioners used it where they judged that blood and energy had become stuck, which they connected with cramping pain, headache and cold hands and feet.
In test tubes and in animals, extracts of the root have slowed platelet clumping (the first step in forming a clot) and relaxed blood vessel walls. These findings are interesting but early. They do not prove the same thing happens when a person drinks a cup of the decoction, and they are the main reason the bleeding cautions below are taken seriously.
The traditional form is a decoction — sliced dried root simmered in water for 20 to 40 minutes, usually with several other herbs. This is how a Korean herbal practitioner would most often prescribe it.
You may also find it as dried sliced root sold loose, as a powder, or as a granulated extract in sachets. Capsules and tinctures exist but are less common in Korean practice.
The essential oil is a separate thing and should never be swallowed. Cheongung also appears in famous classical mixtures such as Ssanghwa-tang and Sagunja-type blood formulas, where the dose of any single herb is small.
Cheongung has been used in Korean medicine for many centuries and appears in the Dongui Bogam, the great Korean medical compendium completed in 1613. The same root is a staple of Japanese Kampo medicine, where it is called senkyu. It is closely related to, and often confused with, the Chinese herb chuanxiong (Ligusticum chuanxiong), which is a different species.
Stop taking it and see a doctor promptly if you bruise easily, bleed from the gums or nose, notice blood in your urine or stool, have black tarry stools, or find that cuts take a long time to stop bleeding. Also stop and get advice if your period becomes much heavier than usual, or if you feel faint or dizzy when you stand.
Get emergency help for bleeding that will not stop, for vomiting blood, or for a sudden severe headache unlike any you have had before.
See a doctor rather than treating yourself if headaches are new or getting worse, if period pain has changed recently, or if pain stops you doing normal daily things. Tell any doctor, dentist or pharmacist that you are taking this herb, especially before surgery.
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 Cheongung 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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