Astringes leakage of blood and stops bleeding - used for epistaxis, uterine bleeding, postpartum bleeding, hemoptysis, hematemesis, blood in the stool, and other hemorrhagic presentations where a charcoal that stops bleeding without excessive cloying is desired.
Stops bleeding without strongly retaining stasis - classical sources emphasize that Xue Yu Tan checks hemorrhage yet still works well with stasis-resolving hemostatics when dark or congealed blood is present.
Promotes urination and treats Blood Lin - extended to hematuria and painful urinary bleeding patterns, especially when the bleeding must be restrained while the urinary pathway remains open.
Generates flesh and treats ulcerative lesions externally - powdered Xue Yu Tan is used on sores, wounds, and selected burns after ulceration when the goal is to stop oozing and support tissue recovery.
Secondary Actions
Although it is human-derived, Xue Yu Tan is classically treated as a standard hemostatic charcoal rather than as a tonic oddity; its preparation quality matters more than novelty.
It is commonly paired with Hua Rui Shi and San Qi for coughing or vomiting blood, or with cooling-blood hemostatics for bloody stool and lower-tract bleeding.
Classic Formulas
Hua Xue Dan (化血丹) - late classical formula pairing Xue Yu Tan with Hua Rui Shi and San Qi for coughing blood and related bleeding-with-stasis presentations.
San Hui San (三灰散) - TCM Wiki notes its use with Di Yu and Huai Hua for hematochezia or lower-tract bleeding associated with intestinal fire.
Topical Xue Yu Tan powder - traditional standalone use for gum bleeding, nosebleed, and small external bleeding sites that need quick local astringency.
Classical References
TCM Wiki describes Xue Yu Tan as bitter, astringent, and neutral, emphasizing that it stops bleeding while helping avoid residual stasis and can be used both internally and externally.
American Dragon places Xue Yu Tan in the hemostatic category, entering the Heart, Liver, Kidney, and sometimes Stomach channels, and specifically adds Blood Lin and flesh-generation to the profile.
Sacred Lotus lists Xue Yu Tan among the stop-bleeding medicinals, while Me & Qi's Hua Rui Shi pairing notes preserve its role as a supplementary blood-supportive hemostatic in Hua Xue Dan.
Modern Research
Active Compounds
Carbon dots and carbon nanoparticles derived from keratin-rich human-hair charcoal - the most studied modern fraction of Xue Yu Tan
Nitrogen-containing carbonaceous matrix - inherited from proteinaceous hair keratin and relevant to fluorescent nanomaterial behavior
Sulfur-containing surface groups - plausible residues from sulfur-bearing keratin decomposition during carbonization
Trace mineral ash and porous charcoal scaffold - part of the surface chemistry relevant to adsorption, hemostasis, and wound-dressing behavior
Studied Effects
A 2025 biomaterials study loaded Crinis Carbonisatus nanoparticles into injectable self-healing hydrogels and reported rapid hemostasis and wound-healing potential, directly matching one of the herb's oldest classical roles (PMID 40406826).
Carbon dots isolated from Crinis Carbonisatus showed neuroprotective effects in a cerebral ischemia-reperfusion model, extending modern interest beyond hemostasis into stroke-related experimental research (PMID 34454522).
Carbonized-human-hair-derived carbon dots were also used for sensitive clozapine detection, confirming that Xue Yu Tan can yield reproducible functional nanocarbon fractions even outside therapeutic applications (PMID 37148662).
Use of unscreened or non-medicinal human-derived material
Cautions
Because Xue Yu Tan is a human-derived material, sourcing, sterilization, and medicinal processing standards matter more than with ordinary plant charcoal herbs
Internal use is usually moderate in dose and often powdered; external application is common for small bleeding sites and ulcerative lesions
Some modern experimental claims extend far beyond the classical bleeding profile and should not be treated as established clinical indications
MSK page not found - drug interaction data not available from Memorial Sloan Kettering integrative medicine database