Educational information, not medical advice — ask your doctor or midwife.
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Aengdoyuk is the dried or fresh fruit flesh of the Nanking cherry, a small bushy cherry tree. Its Latin name is Prunus tomentosa. In Korean medicine it is used as a single drug, most often in the Taeyangin constitutional group of Sasang medicine, and it is taken for mild swelling from fluid build-up, weak digestion and dryness.
It is a food as much as a medicine. The small red fruits are eaten fresh, made into syrup or wine, or dried and simmered into a tea. Medicinal use means larger or more regular amounts of the same fruit.
Here is the honest verdict: Aengdoyuk has a recognised place in Korean tradition, but there are no human trials that test it for any health claim. Traditional use tells you what people have done for a long time; it is not proof that the remedy works, and that applies to everything you read below.
No one has shown how Aengdoyuk works in the body, and any explanation below is a theory rather than a proven mechanism.
Korean tradition describes the fruit as warming and sweet-sour, said to move stagnant fluid, wake up a poor appetite and moisten dryness in the throat and gut. In Sasang medicine it is matched to the Taeyangin constitution, a body-type system rather than a measured biological process.
A modern guess would point to the fruit's water, sugars, plant acids and red pigments. These are the same kinds of compounds found in ordinary cherries. That makes a mild food-level effect plausible and a strong drug-like effect unlikely.
Aengdoyuk is sold and used in a few simple forms:
Fresh fruit, eaten as food.
Dried fruit flesh, simmered as a decoction (a tea made by boiling).
Syrup, jam or fruit wine made from the cherries.
Powdered dried fruit, sometimes pressed into pills with other herbs.
Occasional liquid extracts from herbal suppliers. Strengths are not standardised, so two products can differ a lot.
Cherries have a long record in East Asian materia medica, and Korean texts list aengdo among fruit medicines used for fluid swelling and poor appetite.
Prunus tomentosa grows widely in Korea, Manchuria and northern China, so the fruit was cheap, local and familiar. Its clearest identity today is inside Sasang constitutional medicine, the Korean system founded by Lee Je-ma in the late 1800s, where it is assigned to the Taeyangin type.
It has stayed a minor, food-like remedy rather than a headline herb.
Some reactions to Aengdoyuk need urgent care. Call your local emergency number or go to an emergency department straight away — do not wait to see whether it passes.
Get emergency help straight away if someone has eaten crushed or chewed cherry kernels and becomes dizzy, breathless, confused, blue around the lips or collapses. Also call for emergency help for a severe allergic reaction: swelling of the lips, tongue or throat, a spreading rash, or trouble breathing.
See a doctor soon if swelling in your legs, ankles or face keeps getting worse, if you gain weight quickly, if you feel short of breath lying down, or if you pass much less urine than usual. These can be signs of a heart, kidney or liver problem that needs proper testing.
Also see a doctor if your appetite loss, cough or throat dryness lasts more than two or three weeks, or if you are losing weight without trying.
Evidence grades and traditional-use labels are explained in our methodology. Nothing here is medical advice.
What it is typically used for, usual dose, cautions, and the study behind it where real trial data exists.
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