Bile Arisaema

Chinese
胆南星
Pinyin
Dan Nan Xing
Latin
Rhizoma Arisaema Cum Bile

TCM Properties

Taste
bitter, acrid
Temperature
cool
Channels
Lung, Liver, Spleen

Traditional Use

Primary Actions

  • Clears Heat and transforms phlegm-heat - used for thick yellow sputum, heat-agitated phlegm in the Lung, and turbid phlegm obstructing the sensory orifices.
  • Extinguishes wind and calms convulsions - applied when phlegm-heat stirs internal wind, causing seizures, childhood convulsions, trembling, or fright-type agitation.
  • Addresses stroke and epilepsy with phlegm obstruction - a classic choice when copious sputum, loss of consciousness, or recurrent convulsive disorders show a clear phlegm-heat component.
  • Represents the cooling transformation of Tian Nan Xing - bile processing redirects the warm, drying, toxic raw Arisaema toward a cooler heat-phlegm and convulsion role.

Secondary Actions

  • Dan Nan Xing is a processed specialty medicinal rather than a casual substitute for raw Tian Nan Xing; the bile fermentation changes both temperature and clinical emphasis.
  • It is especially suited to phlegm-heat wind presentations, whereas unprocessed or ginger-alum processed Tian Nan Xing is more often used for cold-damp or stubborn wind-phlegm.

Classic Formulas

  • Niu Huang Bao Long Wan (牛黄抱龙丸) - pediatric convulsion pill in which Dan Nan Xing helps clear heat, resolve phlegm, and relieve convulsions in heat-phlegm closure states.
  • Qi Zhen Dan (七珍丹) - classical pediatric convulsion formula that includes Dan Nan Xing to cool phlegm and settle fright when thick phlegm and heat disturb the spirit.

Classical References

  • TCM Wiki lists Dan Nan Xing with the alternate name Dan Xing and gives the core actions of clearing and resolving heat-phlegm, extinguishing wind, and calming fright.
  • Me and Qi and TCM-ADIP both emphasize that this is the bile-processed form of Tian Nan Xing, shifting the herb from warm-toxic phlegm dispersion toward cool heat-phlegm transformation.
  • IMPORT NOTE: The spreadsheet split Dan Nan Xing and Dan Xing into separate slugs, but they are the same processed medicinal under full and abbreviated names.

Modern Research

Active Compounds

  • Cholic acid and related primary bile acids (bile acids) - major processing-derived constituents introduced by bile fermentation
  • Chenodeoxycholic and deoxycholic acid derivatives (bile acids) - part of the transformed bile-acid matrix analyzed in modern processing studies
  • Taurocholic and glycocholic acid derivatives (conjugated bile acids) - important markers for quality control of the fermented product
  • Residual Arisaema lectins and polysaccharides (plant macromolecules) - part of the underlying rhizome chemistry that remains after processing
  • Fermentation-modified small molecules (processing metabolites) - reflect the chemical shift created by bile processing and help distinguish Dan Nan Xing from raw Tian Nan Xing

Studied Effects

  • Processing-mechanism work - UPLC-MS profiling of twelve bile acids helped clarify how fermentation changes the chemistry of bile arisaema and linked the product to anti-inflammatory activity in LPS-stimulated THP-1 cells (PMID 31662947)
  • Cool-property validation - metabolism research in rat cold/heat models found Arisaema Cum Bile reduced energy-metabolism markers and lowered anal temperature, supporting the pharmacopoeial shift from warm Tian Nan Xing to cool Dan Nan Xing (PMID 36164875)
  • Antipyretic and anti-inflammatory activity - ethanol extracts of bile-fermented Arisaema reduced fever and lowered IL-1β, IL-6, TNF-α, PGE2, and cAMP in rats (PMID 40350870)
  • Lipid-metabolism effects - a 2025 rat lipidomics study suggested Dan Nan Xing improved hyperlipidemia through PPAR-pathway activation and broader regulation of cholesterol and glycerophospholipid metabolism (PMID 41508208)

PubMed References

Safety & Interactions

Contraindications

  • Dry cough without phlegm or yin-deficiency heat without true phlegm obstruction
  • Wind syndromes not driven by phlegm-heat
  • Improper substitution with unprocessed Tian Nan Xing

Cautions

  • This herb should only be used in its properly bile-processed form; confusing it with raw Tian Nan Xing can substantially change both toxicity and clinical action
  • Because it is a specialized processed Arisaema product, it is usually reserved for clear phlegm-heat, convulsion, or closure presentations rather than routine cough use
  • MSK page not found - drug interaction data not available from Memorial Sloan Kettering integrative medicine database

Conditions