Zong Lu Pi (Trachycarpus Stiple Fiber)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Zong Lu Pi (Zong Lu Tan)?

  Roughly 3–9 g in decoction (some references extend the range to ~15 g), or about 1–1.5 g taken as powder — and in practice it is almost always the charred form, Zong Lu Tan, that is used, since charring is what gives the material its full hemostatic strength.

  The charred form is produced by cleaning the fibrous leaf-sheath material and calcining it over low heat in a sealed vessel until it turns dark brown to black (“carbonized while retaining the substance’s nature”), rather than reducing it fully to ash. Powdered charcoal is sometimes taken directly, mixed into warm liquid.

  Source: multiple online sources (processing description); cross-referenced against multiple online sources for dosage ranges. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Zong Lu Pi / Zong Lu Tan?

  Zong Lu Pi/Tan is contraindicated, or used only with a blood-invigorating herb, where blood stasis is still present — its strongly astringent, binding action is well suited to chronic bleeding without stasis, but can trap stagnant blood rather than resolve it. The same caution applies to bleeding with pathogenic heat still present: used alone it risks “sealing in” the heat instead of letting it clear, so it is traditionally combined with a heat-clearing herb in blood-heat bleeding.

  • Blood stasis — best avoided alone; pair with a blood-moving herb if stasis is a concern.
  • Retained pathogenic heat — pair with heat-clearing herbs rather than using alone.
  • Early-stage damp-heat dysentery / intestinal bleeding — some materia medica sources caution against use here, since astringing could help retain the underlying pathogen.

  Source: multiple online sources; caution notes cross-referenced against multiple online sources. Traditional-use framing; not medical advice — use under a qualified practitioner.

Chinese Herb Toxicity & Overdose

• Low. Zong Lu Pi/Tan is a fibrous plant material (charred leaf-sheath fiber of the windmill palm) with no significant toxicity reported in the traditional or materia medica literature at typical dosages. No dedicated modern toxicology study on this specific preparation was identified in the literature search for this entry.

  Source: absence of a toxicity signal across cross-referenced materia medica references (multiple online sources). Reference note, not a safety guarantee.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for Zong Lu Pi/Tan specifically. The material is tannin- and fiber-rich, consistent with its strongly astringent classification; tannin-rich substances generally (e.g. tea) are known to bind non-heme iron and reduce its absorption in vitro, though a systematic review of the broader tannin–iron literature found the in vivo picture is more nuanced (salivary proline-rich proteins can offset true chelation) and effects on iron status are not firmly established. This is precautionary, general tannin-class context — not a demonstrated interaction for this herb — and worth practitioner awareness for patients on iron supplementation taken at the same time. (Flagged for practitioner confirmation.)

Western / Biomedical Research

Chinese Herb Clinical Studies & Research

Provided as research context — a summary of published biomedical study, not a therapeutic or medical claim.

• Is there modern research on Zong Lu Pi (Trachycarpus fortunei)?

  Very little, and none of it directly tests the traditional hemostatic (leaf-sheath fiber) preparation’s stop-bleeding action. Pharmacological research on Trachycarpus fortunei as a species is sparse, and the one PubMed-indexed study located examined a different plant part than the material used in Zong Lu Pi/Tan.

  • Antibacterial compounds (different plant part) — a 2017 study isolated three compounds (including stearamide and a triacetoxybiphenyl) from the seed coat of Trachycarpus fortunei and found in-vitro antibacterial activity against several bacterial species, most notably against Staphylococcus epidermidis. This tested the seed coat, not the petiole/leaf-sheath fiber that is the traditional hemostatic material, so it does not directly support Zong Lu Pi’s traditional use — it is included here only as the most directly relevant modern research on this species.
  • Tannins and hemostasis (compound class, not this herb) — Zong Lu Pi/Tan’s fiber is understood to be tannin-rich, consistent with its strongly astringent classification. A broader pharmacology review of tannins as a compound class describes multiple mechanisms (platelet, coagulation-factor, and endothelial effects) by which tannins can modulate bleeding and clotting, but stresses that effects are compound-specific, evidence is mostly in-vitro/preclinical, and tannins are not uniformly pro-clotting. This is general context on the constituent class, not a study of Zong Lu Pi itself.

  Note: No modern clinical or pharmacological study testing the charred palm-fiber material (Zong Lu Tan) itself was found. The research above is included as species-level and constituent-level context only, and should not be read as validating the traditional hemostatic claim.

  Sources: PMID 29046668, PMC 5632663, DOI 10.3389/fmicb.2017.01894 (Trachycarpus fortunei seed-coat antibacterial compounds); PMID 35095516, PMC 8793672, DOI 10.3389/fphar.2021.806891 (tannins as hemostasis modulators, review); PMC 5525358 (tannin–iron chelation, systematic narrative review). Research context, not a therapeutic claim.

Chinese Herb Notes

• What is Zong Lu Pi combined with, and how does it differ from other stop-bleeding herbs?

  Because Zong Lu Pi only astringes — it doesn’t clear heat, move blood, or tonify — it is traditionally paired with a second herb matched to the underlying cause of the bleeding, rather than used alone. This is the key differentiating point among the “herbs that stop bleeding” category: cooling hemostatics also clear heat, tonifying hemostatics also build blood, and Zong Lu Pi/Tan is the purely astringent option, reserved for bleeding without active stasis.

  • With a blood-invigorating herb — when any residual blood stasis is a concern, since astringing alone risks trapping stagnant blood rather than resolving it.
  • With heat-clearing herbs — for bleeding from blood heat, so the astringent action doesn’t seal pathogenic heat in rather than letting it be cleared.
  • With warming herbs (e.g. dried ginger, mume) — for cold-type intestinal bleeding.
  • With tonifying herbs (e.g. astragalus, goji) — for chronic bleeding arising from underlying deficiency.
  • With Notoginseng (San Qi) — a pairing noted for nosebleed and coughing of blood.

  In the Sacred Lotus formula database, Zong Lu Pi appears in Shi Hui San (Ten-Ash Powder, for hematemesis-type bleeding) and Gu Chong Tang (Stabilize the Flooding Decoction, for uterine bleeding). (Formula context, not treatment advice.)

  Source: this site’s own record (Shi Hui San, Gu Chong Tang formula links); combination pattern cross-referenced against multiple online sources.