Educational information, not medical advice — ask your doctor or midwife.
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Pu Ji Xiao Du Yin is a Chinese herbal formula. It is a single drug (TCM formula), made from a set mix of about 14 herbs. It is also known as Universal Benefit Decoction to Eliminate Toxin.
It is used in Chinese medicine for a hot, red, swollen head or neck. That means sore throat, swollen neck glands, mumps, and hot red skin on the face. It is meant for short, sudden bouts of illness, not for daily use.
The proof is thin. The formula has a long record of use in China, but we could not find good human trials that test it. A long record of use is not proof that a remedy works, and that holds for every use listed on this page.
No one has shown how this formula acts in the body. Most lab work looks at single herbs, not at the whole mix.
In Chinese medicine terms, it is said to clear "heat" and "toxin" from the head and neck. It is also said to move stuck qi so swelling can drain. These are ideas from tradition, not measured facts.
In test tubes and in animals, some of these herbs slow the growth of germs and calm swelling. Lab work does not tell you what happens in a person who drinks the tea.
The oldest form is a decoction. You simmer the raw dried herbs in water and drink the strained liquid.
Today it is sold more often as granules that you stir into hot water, as small pills, or as a dried powder. Some shops sell it as a ready-made liquid.
Strength varies a lot from brand to brand. Chinese herb mixes have also been found with added drugs or heavy metals, so buy only from a seller who tests each batch.
The formula comes from Li Dongyuan, a Chinese doctor of the Jin-Yuan era, around the 1200s. It is written up in his collected formulas.
The story goes that it was made for an outbreak of "big head" fever, in which people had a swollen, red head and neck. It has stayed in use in China ever since and is taught in most Chinese medicine schools.
So it is a staple of one tradition with a long record. It has never been tested well in modern trials.
Some reactions to Pu Ji Xiao Du Yin need urgent care. Call your local emergency number or go to an emergency department straight away — do not wait to see whether it passes.
Call emergency services now if the throat or neck swells so much that breathing or swallowing is hard, if the voice becomes muffled, or if you cannot drink.
See a doctor the same day for a fever above 39C, a stiff neck, a bad headache, spreading red hot skin, or swollen testicles.
See a doctor within a few days if a sore throat or swollen gland is no better after 3 days, or if a lump lasts more than 2 weeks. Stop the herbs and get checked if you notice puffy ankles, muscle weakness, a fast or uneven heartbeat, yellow skin or eyes, or a new rash.
Tell your doctor and pharmacist that you are taking this formula, and take the packet with you.
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 Pu Ji Xiao Du Yin 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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