Educational information, not medical advice — ask your doctor or midwife.
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Jiao Ai Tang is an old Chinese herbal formula. Its other name is Ass-Hide Gelatin and Mugwort Decoction. A decoction is a strong tea made by boiling herbs in water.
It is used as one single product, not as loose single herbs. Its main job in Chinese medicine is to slow bleeding from the womb. That covers heavy or long periods, spotting in pregnancy, and bleeding after birth.
Human trial proof is thin. Long use in a tradition is not proof that a remedy works, so treat this formula as unproven. Any bleeding during pregnancy needs a doctor the same day.
No one has shown how this formula works in the body. Chinese medicine says it warms the womb, builds blood, and holds bleeding in check.
Lab work points to a few parts. Mugwort leaf has been looked at for slowing blood loss. Peony root and Chinese angelica root may relax the womb and ease cramps.
These are lab and animal findings. They do not prove the formula does the same thing in a person. Treat the idea of how it works as a theory, not a fact.
Most often it comes as raw dried herbs that you boil into a tea. This is the classic form and the one most herbalists use.
You can also find granules that melt in hot water, and ready-made pills. Strength varies a lot between brands. An amount that fits one form does not carry over to another.
E Jiao is made from donkey hide, so no form of this formula is vegan. Some E Jiao stock has been faked or mixed with other hides. Buy only from a seller that tests what it sells.
The recipe comes from the Jin Gui Yao Lue, a Chinese medical text from about 200 CE. Zhang Zhongjing is named as its author.
It has stayed in use ever since for bleeding in women. It is still taught in schools of Chinese medicine today. That gives it a strong standing inside one tradition.
Some reactions to Jiao Ai Tang need urgent care. Call your local emergency number or go to an emergency department straight away — do not wait to see whether it passes.
See a doctor the same day if you are pregnant and bleeding, even a little. Get emergency help if you soak through a pad in an hour, pass large clots, feel faint or dizzy, or have bad belly pain.
Stop the formula and call your doctor if your ankles swell, your muscles feel weak, your heartbeat feels uneven, or your blood pressure climbs. These can be signs of low potassium from the licorice in it.
Also get advice if bleeding has not settled in three days, or if you feel unusually tired and short of breath, which can mean low iron.
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 Jiao Ai Tang 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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