Natural Herb Library

Prepared Arisaema Rhizome

Chinese
制南星
Pinyin
Zhi Nan Xing
Latin
Rhizoma Arisaematis Praeparata
Scientific specimen plate of Prepared Jackinthepulpit Tuber, Rhizoma Arisaematis, showing processed Arisaema pieces and diagnostic preparation details.
Botanical plate by Kodi .

Known in TCM as Zhi Nan Xing (制南星), this bitter and acrid, warm herb enters the Lung, Liver, and Spleen. Traditionally, it dries dampness and transforms cold-damp or stubborn phlegm ... Zhi Nan Xing is the processed internal-use Arisaema used when thick obstructive phlegm needs a stronger drying herb than Ban Xia, most often applied for productive cough, asthma, and dizziness. Modern research has identified Calcium among its active constituents.

Part used: Rhizome

Also Known As

Prepared Jackinthepulpit Tuber Processed Tian Nan Xing Arisaematis

Latin: Rhizoma Arisaematis Praeparata | Pinyin: Zhi Nan Xing | Chinese: 制南星

TCM Properties

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

Traditional Use

Primary Actions

  • Dries dampness and transforms cold-damp or stubborn phlegm ... Zhi Nan Xing is the processed internal-use Arisaema used when thick obstructive phlegm needs a stronger drying herb than Ban Xia.
  • Dispels wind-phlegm and opens the channels ... it is used for facial paralysis, numbness, dizziness, and channel obstruction when phlegm blocks the collaterals.
  • Stops spasms and addresses phlegm-obstructed seizures ... traditional use extends to epilepsy or convulsive disorders in which turbid phlegm clouds the clear orifices.

Secondary Actions

  • Compared with raw Sheng Nan Xing, the prepared form is safer for internal use and far less centered on harsh irritant external applications.
  • Compared with the already-live Tian Nan Xing sibling, this page stays on the processed dispensing-material lane rather than trying to redefine the broader therapeutic family.

Classic Formulas

  • Dao Tan Tang (导痰汤) ... classic stubborn-phlegm formula in which Tian Nan Xing lineage material helps dry dampness and break up obstructive phlegm.
  • Qing Zhou Bai Wan Zi (青州白丸子) ... famous wind-phlegm channel-obstruction formula using Nan Xing for numbness and facial deviation.
  • Wu Xian Wan (五痫丸) ... seizure formula lineage in which Nan Xing helps address phlegm closing the clear orifices.

Classical References

  • Traditional references describe processed Nan Xing as bitter, acrid, warm, and toxic, entering the Lung, Liver, and Spleen to dry dampness, resolve phlegm, extinguish wind, and reduce swelling.
  • Paozhi is clinically decisive here ... correct internal-use processing materially reduces toxicity and changes how the herb can be prescribed.
  • PREPARATION NOTE: this page exists to preserve the processed Zhi Nan Xing lane and should not be collapsed into raw Sheng Nan Xing.

Modern Research

Active Compounds

  • Calcium oxalate raphides ... major irritant crystals tied to raw-material toxicity
  • Lectins and related proteins ... contributors to irritant and neurotoxic discussion
  • Flavonoids and phenylpropanoid derivatives ... part of the expanding Arisaematis Rhizoma chemistry literature
  • Sterols, glycosides, and polysaccharides ... supportive constituents in broader Arisaema pharmacology research

Studied Effects

  • A 2011 mouse study found that traditional ginger-alum or bile processing improved sedative and analgesic effects while reducing neurotoxic changes compared with crude Rhizoma Arisaematis, supporting why modern internal use favors processed Nan Xing (PMID 21905287).
  • A 2021 review summarized the reported chemical constituents and bioactivities of Arisaematis Rhizoma and showed that current evidence remains largely preclinical despite long traditional use (PMID 34738419).
  • A 2015 metabolomics toxicity study in rats demonstrated raw-material renal and metabolic injury signals, reinforcing the importance of correct processing and cautious internal use (PMID 25407163).

PubMed References

Safety & Interactions

Contraindications

  • Pregnancy
  • Yin deficiency with dry cough or depleted fluids
  • Wind from extreme heat or blood deficiency without real phlegm obstruction

Cautions

  • Internal use assumes correct processing ... raw toxic Arisaema belongs on the Sheng Nan Xing page.
  • Zhi Nan Xing is strongly drying and can aggravate dryness, heat, or irritated mucosa when the pattern is wrong.
  • Bile-processed Dan Nan Xing and ordinary processed Tian Nan Xing are related but not automatically interchangeable.

Conditions

Frequently Asked Questions

What is Prepared Arisaema Rhizome used for?

Prepared Arisaema Rhizome is traditionally used to Dries dampness and transforms cold-damp or stubborn phlegm ... Zhi Nan Xing is the processed internal-use Arisaema used when thick obstructive phlegm needs a stronger drying herb than Ban Xia., Dispels wind-phlegm and opens the channels ... it is used for facial paralysis, numbness, dizziness, and channel obstruction when phlegm blocks the collaterals., Stops spasms and addresses phlegm-obstructed seizures ... traditional use extends to epilepsy or convulsive disorders in which turbid phlegm clouds the clear orifices.. Research has investigated its effects on: A 2011 mouse study found that traditional ginger-alum or bile processing improved sedative and analgesic effects while reducing neurotoxic changes compared with crude Rhizoma Arisaematis, supporting why modern internal use favors processed Nan Xing (PMID 21905287).; A 2021 review summarized the reported chemical constituents and bioactivities of Arisaematis Rhizoma and showed that current evidence remains largely preclinical despite long traditional use (PMID 34738419)..

What are other names for Prepared Arisaema Rhizome?

Prepared Arisaema Rhizome is also known as Prepared Jackinthepulpit Tuber, Processed Tian Nan Xing, Arisaematis. In TCM: 制南星 (Zhi Nan Xing); Rhizoma Arisaematis Praeparata.

Is Prepared Arisaema Rhizome safe during pregnancy?

The safety of Prepared Arisaema Rhizome during pregnancy has not been established. Consult a qualified healthcare provider before use.

What are the contraindications for Prepared Arisaema Rhizome?

Prepared Arisaema Rhizome should not be used in: Pregnancy; Yin deficiency with dry cough or depleted fluids; Wind from extreme heat or blood deficiency without real phlegm obstruction. Consult a qualified practitioner before use.