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Zhi Tian Nan Xing (Prepared Jack in the Pulpit Rhizome)

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Warm Zhi Tian Nan Xing (Arisaematis Rhizoma preparatum)
Bitter, Spicy, Warm, Toxic
Arisaematis Rhizoma preparatum
Tone Marks:
zhì tiān nán xīng
Star of the Southern Heavens


  • Dries Damp, Expels Phlegm
    Treats cough with stubborn hot phlegm and a stifling, distended sensation in the chest. This herb is extremely drying and treats many types of damp and phlegm accumulation.
  • Dispels Wind and Phlegm, Stops Spasms
    Treats dizziness, vertigo, facial paralysis, seizures, convulsions, tetanus, epilepsy, opisthotonos and stroke. Also treats numbness in the limbs and lock jaw.
  • Dissipates Nodules, Reduces Swelling, Relieves Pain
    Used topically to reduce swelling and nodules. Treats sores, ulcers, carbuncles, and swelling associated with trauma or joint pain. Treats cervical cancer topically and internally.

Contraindications and Cautions

  • Do not use unprepared form for internal use
  • Do not use in cases of cough with Yin Deficiency
  • Do not use in cases of Liver Wind or Wind due to Fire or Blood Deficiency
  • Do not use during pregnancy

Herb-Drug Interactions

  • This section is being researched, and is not completed.

Toxicity and Overdose

  • This herb is considered toxic (while some Chinese herbs are toxic, it must be noted that many come prepared, or are combined, to mitigate their toxicity).


  • 5-10 grams in decoction, maximum 15 grams for tumors (Chen)
  • 3-9 grams in decoction (Bensky)


  • Zhi Tian Nan Xing is extremely drying, warming and toxic compared to Dan Nan Xing which is moistening, cooling, non-toxic, and is able to clear Hot-Phlegm and convulsions.
  • Zhi Tian Nan Xing is used to treat cancer.

This Herb Appears in the Following Formulas: