Gumiganghwaltang
Do not self-treat with Gumiganghwaltang
If this is an emergency
Some reactions to Gumiganghwaltang need urgent care. Call your local emergency number or go to an emergency department straight away — do not wait to see whether it passes.
Who should avoid Gumiganghwaltang?
- Do not use if you are pregnant, at any stage: this is an absolute ban, because two of the herbs can act on the womb
- Do not use if you are breastfeeding
- Do not use if you have any kidney disease, or only one kidney
- Do not use if you have had cancer of the urinary tract (the bladder, kidneys or the tubes between them)
- Do not use if you have high blood pressure, heart failure or a heart rhythm problem
- Do not use if you have low potassium (too little of a salt your heart and muscles need)
- Do not use if you have liver disease or hepatitis (swelling of the liver)
- Do not use if you take warfarin or any other blood thinner
- Do not use if you take digoxin, water pills (diuretics) or steroid tablets such as prednisone
- Do not use if you cannot confirm that the maker tested the Sesin for aristolochic acid (a plant poison that harms kidneys)
- Do not use if you want to give it to a child, unless a licensed Korean medicine doctor has prescribed it
- Do not use if you have a dry, hot fever with heavy sweating and no chills
When should you see a doctor?
See a doctor the same day if your fever stays above 39C, lasts more than three days, or comes back after it broke.
Get urgent care if you pass much less urine than normal, if your urine turns pink or brown, or if your ankles and face swell.
Call emergency services if you feel your heart racing or skipping, if you faint, if you cannot breathe easily, or if your lips, tongue or throat swell. Stop the tea at once and take the packet with you.
Also tell your doctor if you feel very weak or get bad muscle cramps, or if your skin or eyes look yellow.
- What it is: A nine-herb Korean tea used at the first signs of a cold with chills and body aches.
- Active ingredients: Ganghwal, Bangpung, Changchul, Sesin (may hold aristolochic acid), Cheongung, Baekji, Saengjihwang, Hwanggeum (baicalin), Gamcho (glycyrrhizin)
- Side effects: Dry mouth, sweating and stomach upset are common; kidney, blood pressure and potassium harm are the serious risks.
- Pregnancy & breastfeeding: Avoid in pregnancy and while breastfeeding.
Educational information, not medical advice — ask your doctor or midwife.
What is Gumiganghwaltang?
Gumiganghwaltang is a herb tea used in Korean medicine. It blends nine dried herbs in one pot. The Latin name simply means "nine herbs".
It is given at the first signs of a cold or flu. Those signs are chills, fever, a sore head and aching limbs. Some healers also use it for stiff, aching joints in cold, damp weather.
Here is the short verdict. Good human trials are lacking, so we cannot say it works. Long use in a tradition is not proof of effect, and one herb in this mix can harm the kidneys.
How does Gumiganghwaltang work?
Key point: no one has shown how this tea works in the body.
In Korean medicine, the herbs are said to drive out "wind, cold and damp" that has settled near the skin. In plain words, healers use the tea to make you sweat and to ease aches.
Lab work hints that some of the herbs ease swelling and pain. Most of that work used test tubes and animals. It does not show that the tea helps a person with a cold.
What forms does Gumiganghwaltang come in?
Most often it comes as a tea. A pharmacy boils the nine herbs and seals the liquid in packets.
You may also see it as granules you stir into hot water, as small pills, or as a ready-made drink vial.
Strength varies a lot between makers. Some products list the herbs in Korean, some in Chinese, some in Latin. Ask the maker in writing whether the Sesin was tested for aristolochic acid.
Where it comes from:
The formula comes from Chinese medicine and is linked to the doctor Zhang Yuansu, about 900 years ago.
Korean doctors took it up and it appears in Korean medical books, including the Dongui Bogam of 1613. It is still taught and used in Korean medicine today, and in Japan as well.
It is one of the best known "first day of a cold" formulas in East Asia.
What does Gumiganghwaltang help with?
- Early common cold with chills and fever: This is the main use in Korean medicine, on day one or two of a cold. Healers pick it when you feel cold, ache, and sweat little. We found no solid human trial that tests it against a dummy tea, so this rests on tradition alone.
- Flu-like aching all over the body: Tradition treats deep body aches with chills as the classic sign for this mix. It does not kill flu virus and is not a substitute for flu care or a flu shot. Human evidence for this use is missing.
- Headache with a stiff neck during a cold: Old texts name a tight, sore head and neck as a key sign for this formula. There is no trial evidence behind that claim. A stiff neck with a high fever needs a doctor the same day, not a herb tea.
- Muscle and joint aches in cold, damp weather: Some Korean clinics use short courses for aches that worsen in cold, wet weather. This is an off-label use even within the tradition. Lab work on single herbs is not proof that the mix eases joint pain in people.
What are the side effects of Gumiganghwaltang?
- Upset stomach or nausea (feeling sick)
- Loose stools
- Dry mouth and thirst
- Heavy sweating, and feeling weak after it
- Puffy face, hands or ankles from the licorice
- A rise in blood pressure
- Low potassium, which brings muscle weakness and cramps
- Skin rash or itch from an allergy
- Kidney damage, mainly with long or repeat use of the Sesin herb
- Liver injury, rare, reported with baikal skullcap
Good to know:
Most people who take it for a few days get nothing worse than a dry mouth, sweating or a mild stomach upset.
The serious harms are not common, but they are real. They cluster around two herbs: Sesin, which can hold a kidney poison, and licorice, which can lift blood pressure and drop potassium.
Risk rises with long use, with higher doses, and in anyone with kidney, liver or heart trouble.
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