Educational information, not medical advice — ask your doctor or midwife.
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He Zi is the dried fruit of the chebulic myrobalan tree (Terminalia chebula), used in Traditional Chinese Medicine as a single herb. It is best known as an astringent, meaning it is used to draw tissues together and dry up leaking. Healers have used it for long-lasting loose stools, long-lasting cough, and a hoarse or lost voice.
It is a single-drug remedy, not a blend, though it also appears in many formulas. Outside China it is also called Chebula fruit or myrobalan, and it is one of the three fruits in the Ayurvedic mix Triphala.
The honest evidence picture is thin. He Zi has centuries of recorded use in more than one tradition, but good human trials of the fruit on its own are few. Long traditional use tells you people valued it; it does not prove the herb works.
He Zi is very high in tannins, which are plant compounds that bind to proteins and make tissues feel tight and dry. This binding action is the likely reason it was used to firm up loose stools and soothe a raw throat.
Laboratory studies also report that extracts can slow the growth of some bacteria and mop up free radicals (unstable molecules that damage cells). These findings come from dishes and animals, not from people.
None of this has been confirmed as the way the whole fruit behaves in the human body. Treat the mechanism as a reasonable idea rather than a settled fact.
The usual TCM form is the whole or broken dried fruit, simmered in water to make a decoction (a strong tea). Some pharmacies sell the fruit roasted or dry-fried, which tradition says makes it gentler on the gut.
You can also find it as a loose powder, in capsules, and in liquid extracts. Mouth rinses and gargles made from the fruit are sold for throat and gum use.
It is a common ingredient in multi-herb TCM formulas and in the Ayurvedic blend Triphala. Check labels, because a product called Triphala or myrobalan may not be He Zi alone.
He Zi has been listed in Chinese materia medica since roughly the Tang dynasty, around the 7th to 8th century. It travelled into China along trade routes from South Asia, where the same fruit is called haritaki.
It is also a long-standing staple of Ayurvedic and Tibetan medicine, which is unusual for a single herb and gives it broad traditional standing.
See a doctor if diarrhoea lasts more than two days, or sooner if you have a fever, blood or black colour in the stool, or signs of dehydration (not passing much urine, dizziness, a very dry mouth).
See a doctor about a cough or hoarse voice that lasts more than three weeks, or any trouble swallowing.
Stop the herb and get urgent help if you get a rash with swelling of the lips or face, trouble breathing, or unusual bruising or bleeding.
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 He Zi 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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