TCM Properties

Traditional Use

Clears Heat and stops spasms - classically used for high fever, internal wind, convulsions, pediatric fright, and heat-type epileptic disorders when blazing heat agitates the Liver and Heart.
Drains Liver and Gallbladder Fire while benefiting the eyes - applied for red swollen painful eyes, acute visual obstruction, and ocular heat-toxin patterns in which strong bitter-cold descent is needed.
Resolves fire toxin and relieves painful swelling - used internally or topically for sore throat, mouth sores, boils, hemorrhoids, and other hot painful lesions where direct heat-clearing action is required.
Clears damp-heat and reduces swelling - extended to jaundice, toxic inflammatory lesions, and trauma-related hot swelling when excess heat and obstruction predominate.

Because of its extremely strong heat-clearing nature, Xiong Dan was historically reserved for intense excess-heat presentations rather than routine long-course treatment.
Modern ethical and legal practice increasingly replaces crude bear bile with synthetic or cultured bile-acid substitutes such as UDCA or TUDCA rather than using wild-animal-derived material.

Xiong Dan Yuan (熊胆圆) - recorded in Tai Ping Hui Min He Ji Ju Fang for pediatric heat, fright, vomiting phlegm, poor feeding, and lingering gan ji-type disorders, showing bear bile in a strongly clearing pediatric formula.
Di Sheng Xiong Dan Wan (抵圣熊胆丸) - from Sheng Hui Fang, an external bear-bile and musk pill placed on intensely hot painful carbuncles and sores to reduce fire toxin and pain.

Sacred Lotus records the core traditional actions as clearing Heat, stopping spasms, calming Liver Fire, benefiting the eyes, reducing swelling, and treating fire-toxin lesions.
TCM Wiki lists jaundice, nebula, pharyngitis, anal fistula, boils, infantile malnutrition, diarrhea from summer-damp, and heat-type epilepsy among standard classical indications, reinforcing its broad use in severe excess-heat states.
Traditional cautions state that Xiong Dan should not be used without true Heat and that its effect is weakened by Han Fang Ji and Sheng Di Huang.

Ursodeoxycholic acid or UDCA (hydrophilic bile acid) - the best-known therapeutic bile acid historically associated with bear bile and now widely manufactured synthetically
Tauroursodeoxycholic acid or TUDCA (taurine-conjugated bile acid) - studied for neuroprotective, ocular, and hepatoprotective effects
Chenodeoxycholic acid (primary bile acid) - part of the broader bile-acid profile contributing to pharmacologic activity
Taurochenodeoxycholic and related conjugated bile acids (conjugated bile acids) - contribute to the complex traditional animal-drug profile
Minor bile pigments and sterol metabolites (biliary metabolites) - part of the non-UDCA chemical matrix of crude bear bile

Modern research has largely translated the traditional drug into bile-acid pharmacology - UDCA is reviewed as the key therapeutic component with anti-inflammatory and cytoprotective activity and established hepatobiliary applications (PMID 31509435)
Neuroprotective and anti-apoptotic potential - TUDCA review literature summarizes evidence for disease-modifying effects in neurodegenerative models, echoing the traditional use of bear bile for convulsive and severe heat disorders (PMID 35659112)
Ocular protection - review literature on bile acids in ocular disease highlights UDCA and TUDCA as major bear-bile-associated molecules with retinal and neuroprotective relevance (PMID 20046852)
Direct bear-bile powder research - bear bile powder attenuated senecionine-induced hepatic sinusoidal obstruction syndrome in mice, with tauroursodeoxycholic acid identified as an important contributor (PMID 35487597)

Cases without true Heat, fire toxin, convulsive heat, or damp-heat excess
Cold or deficiency conditions where strong bitter-cold drainage would further weaken the patient

Bear bile is an endangered and legally restricted animal medicinal in the United States and many other settings; modern practice generally relies on synthetic or cultured bile-acid substitutes instead of crude animal sourcing
Because this is a potent bitter-cold animal drug, inappropriate use can easily injure digestion or worsen weak patients who do not have clear excess-heat pathology
Traditional sources state that Han Fang Ji and Sheng Di Huang weaken its action
MSK page not found - drug interaction data not available from Memorial Sloan Kettering integrative medicine database