Chinese herbs ·
Donkey-hide gelatin (阿胶): traceable hides, long boiling, and concentration
Donkey-hide gelatin is known as ē jiāo in Chinese medicine. This field note centres on where the material lives or grows, how it is collected, and what processing changes before it reaches professional practice.
Where it lives and how it grows
E Jiao is animal-derived, so its production begins with donkey husbandry rather than a field crop. Animal health, welfare, breed records, feed, and traceable legal sourcing shape the raw material.
Harvest
Hides enter production as an animal by-product or dedicated raw material and must be authenticated. Traceability is especially important because substitution and pressure on donkey populations are recognised concerns.
Processing
Cleaned hide is cut, repeatedly washed, simmered or pressure-extracted, filtered, concentrated, and dried into solid gelatin blocks. Water quality and process control affect the finished material.
Traditional uses and symptom patterns
E Jiao is traditionally associated with blood-deficiency, bleeding, and dryness patterns and is usually used within a formula. These descriptions do not establish effectiveness for anaemia, infertility, or serious bleeding.
What the evidence can and cannot say
The reviewed sources support source identity, material distinction, and the cultivation or processing account. They do not establish that this material is an effective treatment for a reader's symptoms; clinical recommendations, products, formulas, and doses remain outside this article.
Safety and interactions
The material is unsuitable for people avoiding animal products and may cause digestive or allergic reactions. Anaemia and abnormal bleeding should be medically assessed, while sourcing, adulteration, and interaction evidence remain important uncertainties.
Sources
- 【FULL】《本草中国第二季》第12集同归：新婚后就患严重肾炎无法生育 中医拯救他们- TCM S2EP12：Integration of Chinese and Western Medicine
The Tale of Chinese Medicine Official Channel · Primary footage and narration for habitat, cultivation, harvest, processing, and traditional-use context.
- NCBI Taxonomy search: Equus asinus
National Center for Biotechnology Information · Authoritative taxonomic reference for the animal source.
