Educational information, not medical advice — ask your doctor or midwife.
Mu Hu Die is the dried, paper-thin seed of the tree Oroxylum indicum, which grows in southern China and Southeast Asia. In Chinese medicine it is used mainly for a dry cough, a sore throat, and a hoarse or lost voice. It is also given for pain in the upper belly that comes on with stress.
The seeds are wafer-like, silvery and almost weightless, and they hang from the tree in long pods. They are nearly always simmered in water with several other herbs rather than taken on their own.
Here is the honest evidence picture. Mu Hu Die has a clear, long-standing place in Chinese herbal practice, but no human trials of the seed on its own have been published. Long traditional use tells you what people have done with a herb, not that it works, and that distinction applies to everything on this page.
Nobody has shown how Mu Hu Die works in the human body, so what follows is informed guesswork from laboratory work. The seed is rich in flavonoids (plant pigments with antioxidant activity), and in test tubes some of these calm inflammation and relax airway muscle.
In traditional Chinese terms, the seed is said to clear heat from the lung and throat, open the voice, and move stuck qi in the stomach and liver. Those are traditional descriptions of the body, not measurements of what a drug does.
Cell and animal studies are not a substitute for trials in people. They tell you where to look next, not what a cup of the tea will do for your cough.
Most people meet Mu Hu Die as the loose dried seed, which is simmered into a decoction (a strong water extract made by boiling). It also turns up as a powder, as instant granules, and inside ready-made cough syrups and throat lozenges.
It is rarely used alone. Chinese formulas usually pair it with other throat and cough herbs, so a packaged product may list it as one ingredient among many.
Mu Hu Die enters the Chinese materia medica late, in the Qing dynasty, with Zhao Xuemin's Ben Cao Gang Mu Shi Yi (1765) among the early written sources. It has been a steady, if secondary, throat and cough herb ever since.
The same tree is used elsewhere in Asia. Ayurveda uses its root bark under the name Shyonaka, and the young pods are eaten as a vegetable in parts of Northeast India, Thailand and Laos.
See a doctor if your cough lasts more than three weeks, if you cough up blood, or if you are short of breath. A hoarse voice that has not settled in three weeks also needs checking, as does a sore throat with a high fever, drooling or trouble swallowing. Get urgent help if you develop a spreading rash, swelling of the lips or tongue, or difficulty breathing after taking it.
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 Mu Hu Die 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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