Educational information, not medical advice — ask your doctor or midwife.
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Apcheokcho is a herb used in Korean folk medicine. It is the dried stem and leaf of the dayflower plant, Commelina communis. People drank it as a tea for fever, sore throat and puffy swelling.
Korean healers call it a "cooling" herb. They gave it for heat signs, such as a hot flushed face or a red painful throat. They also gave it to help the body pass more urine.
The proof in people is thin. Almost all of what we know comes from lab dishes and animal tests. Long use in a tradition is not proof that a herb works.
No one has shown how Apcheokcho acts in the human body.
Lab work points to two ideas. Plant compounds in it calmed swelling and redness in cell tests. Others slowed an enzyme (a body chemical) that breaks starch down into sugar, which may lower blood sugar in animals.
Old Korean texts explain it a different way. They say the herb "clears heat" and "drains damp". Those are ideas from an old system of thought, not a test of what happens in your cells.
You will most often meet it in these forms: - Dried cut herb, boiled into a tea (a decoction) - Part of a mixed Korean herbal formula from a practitioner - Fresh young shoots eaten as a wild green vegetable - Powder or capsules, sold online - Fresh crushed leaf, laid on the skin in folk use
Decoction is the classic form. Capsules and powders are newer and are not well studied.
Apcheokcho has a long record across East Asia. In China it is called ya zhi cao and appears in classical herb books. Korea and Japan use the same plant in much the same way.
In Korea it sits among the everyday "heat-clearing" herbs. Village healers picked it fresh in summer for fevers and sore throats.
It has also served as food. Young shoots were eaten as namul, a seasoned wild green.
See a doctor now if your fever goes above 39C, lasts more than three days, or comes back after settling.
Get help the same day if your throat hurts so much that you cannot swallow, if you see pus or white spots, or if your neck or face swells.
Also see a doctor if you have blood in your urine, pain in your back or side, fever with burning urine, or swelling in your legs or belly. Stop the herb and call for emergency help if your lips, tongue or face swell, or you struggle to breathe.
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 Apcheokcho 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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