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seojanggyeong

Traditionally used for: Traditional pain formulas given by a trained practitioner. Joint and muscle pain; Itchy skin; Belly cramps.

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What is seojanggyeong? Seojanggyeong is a single herb used in Korean medicine. It is the dried root and root stalk of the plant Cynanchum paniculatum. In English it is called paniculate swallowwort root. Healers have long used it for pain. Folk use covers sore joints, belly pain, toothache and itchy skin. It was also laid on the skin after snake and insect bites. The proof in people is thin. Nearly all of the research so far is lab and animal work. Long use in a tradition is not proof that a herb works, so read what follows with that in mind. How does seojanggyeong work? No one has shown how it works in people. The best guess comes from lab dishes and animal tests. Its best known active part is paeonol. In animals, paeonol eased pain and calmed swelling (puffiness and heat in body tissue). It also seemed to quiet some immune cells that drive itching. Other lab work hints at a mild calming effect on the body. None of this has been shown in people. Treat the whole picture as a theory, not a fact. What forms does seojanggyeong come in? You will most often see the dried, sliced root. It is boiled in water to make a tea, called a decoction. Powders, pills and alcohol extracts (tinctures) are also sold. It is used on the skin too. Folk healers soaked the root in wine, or crushed it fresh, and put it on bites and rashes. In Korean practice it is rarely used alone. It is usually one herb in a mixed formula. Where it comes from: Use of this root goes back about two thousand years in East Asian medicine. Old Chinese texts list it as xu chang qing. Korean doctors took it up and used it for pain, itch and bites. It still appears in Korean and Chinese herb books today.

Helps

What does seojanggyeong help with? Joint and muscle pain: This is the most common folk use. Animal tests show paeonol can dull pain signals. No published human trial tests this root for joint or muscle pain, so the benefit in people is unknown. Itchy skin and eczema-type rashes: Korean and Chinese herbalists used it for hot, itchy skin. Lab work shows paeonol can calm cells linked to itch. There is no good human trial, and a rash can also be an allergy to the herb itself. Toothache: Traditional use only. The root was chewed or held near the sore tooth. Tooth pain usually means decay or an abscess (a pocket of pus), and that needs a dentist, not a herb. Belly pain and cramps: Old texts list it for cramping belly pain. Animal work hints at a mild easing of muscle spasm. No human study backs this, and lasting belly pain needs checking by a doctor. Skin care after snake or insect bites (traditional use only): The fresh crushed root was placed on bites. There is no proof it works, and it does nothing against venom. A snake bite is a medical emergency — go to hospital straight away.

seojanggyeong

Quick Facts

  • What it is: Seojanggyeong is the dried root of Cynanchum paniculatum, used in Korean medicine for pain and itchy skin.
  • Main uses: Joint and muscle pain, Itchy skin, Belly cramps, Toothache (traditional)
  • Best for: Traditional pain formulas given by a trained practitioner
  • Active ingredients: Paeonol, Related plant oils, Sterols (plant fats), Glycosides
  • Forms: Dried sliced root, Decoction (water tea), Powder, Pills, Tincture (alcohol extract), Skin paste
  • Time to effect: Unknown from trials; traditional use expects hours to a few days.
  • Side effects: Mostly nausea, loose stools, dizziness or sleepiness; allergy is possible.
  • Pregnancy & breastfeeding: Avoid in pregnancy and while breastfeeding.

Educational information, not medical advice — ask your doctor or midwife.

What is seojanggyeong?

Seojanggyeong is a single herb used in Korean medicine. It is the dried root and root stalk of the plant Cynanchum paniculatum. In English it is called paniculate swallowwort root.

Healers have long used it for pain. Folk use covers sore joints, belly pain, toothache and itchy skin. It was also laid on the skin after snake and insect bites.

The proof in people is thin. Nearly all of the research so far is lab and animal work. Long use in a tradition is not proof that a herb works, so read what follows with that in mind.

How does seojanggyeong work?

No one has shown how it works in people. The best guess comes from lab dishes and animal tests.

Its best known active part is paeonol. In animals, paeonol eased pain and calmed swelling (puffiness and heat in body tissue). It also seemed to quiet some immune cells that drive itching.

Other lab work hints at a mild calming effect on the body. None of this has been shown in people. Treat the whole picture as a theory, not a fact.

What forms does seojanggyeong come in?

You will most often see the dried, sliced root. It is boiled in water to make a tea, called a decoction. Powders, pills and alcohol extracts (tinctures) are also sold.

It is used on the skin too. Folk healers soaked the root in wine, or crushed it fresh, and put it on bites and rashes.

In Korean practice it is rarely used alone. It is usually one herb in a mixed formula.

Where it comes from:

Use of this root goes back about two thousand years in East Asian medicine. Old Chinese texts list it as xu chang qing.

Korean doctors took it up and used it for pain, itch and bites. It still appears in Korean and Chinese herb books today.

Who should avoid seojanggyeong?

  • Do not use if you are pregnant or think you may be pregnant.
  • Do not use if you are breastfeeding.
  • Do not give it to children.
  • Do not use if you have liver disease or kidney disease.
  • Do not use if you take warfarin (a blood thinner), digoxin (a heart drug) or medicine for seizures, unless your doctor has said it is safe.
  • Do not use if you take sedatives (calming or sleep medicines) or drink alcohol daily.
  • Do not use if you have ever reacted badly to this plant or to other swallowwort plants.
  • Never use roots you picked yourself or cannot identify, because some related plants are poisonous.
  • Never use it in place of hospital care for a snake bite or a bad insect sting.
  • Do not take it in the two weeks before planned surgery.

When should you see a doctor?

See a doctor if your pain, rash or belly cramps do not settle within two weeks, or if they get worse. Get help the same day if you have yellow skin or eyes, dark urine, a fast or uneven heartbeat, fainting, or ongoing vomiting. Call emergency services at once for a snake bite, or if you get a swollen face or lips, a spreading rash, or trouble breathing after taking it.

Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.

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