Dou Chi Jiang (Aromatic Litsea Root and Stem)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Dou Chi Jiang?

  Materia medica sources give roughly 15–30 g in decoction, or 15–60 g of the fresh root/stem — a notably larger range than many single herbs, reflecting its traditional use as a substantial folk-remedy dose rather than a small adjunct herb. It is also prepared by stewing or by steeping in wine; for external use (as a wash, e.g. for traumatic swelling) an appropriate amount is decocted in water.

  Source: Chinese materia medica references, consistent across independently checked sources. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Dou Chi Jiang?

  No specific contraindications for Dou Chi Jiang are well documented in the materia medica sources consulted. As a pungent, warming, dispersing herb, standard TCM practice is caution in heat or yin-deficiency presentations, where warming herbs are generally avoided or used sparingly; professional guidance is also advisable given a traditional indication for edema in pregnancy, which is not a self-treatment use.

  Source: category-level TCM convention for warming/dispersing herbs (general reference, not a documented Dou-Chi-Jiang-specific caution); Chinese materia medica references (indications). Reference only, not medical advice.

Chinese Herb Toxicity & Overdose

• Traditionally classified as non-toxic (“無毒”) in the Chinese materia medica references consulted. No dedicated toxicological or safety studies specific to the root/stem material were located in the research search; the acute-toxicity data that does exist for Litsea cubeba (LD50 figures, genotoxicity assays) was generated on the distilled fruit essential oil — a different preparation and dose form (see the Bi Cheng Qie entry) — and does not necessarily apply to the decocted root and stem.

  Source: Chinese materia medica references (traditional toxicity classification). Reference note, not a safety guarantee.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for Dou Chi Jiang. Preclinical research on the root extract shows measurable anti-inflammatory activity (reduced TNF-α, IL-1β, and IL-6, with downregulation of COX-2/5-LOX; see Research below), a reasonable basis for practitioner awareness in patients on anti-inflammatory or immunosuppressive medication — this is precautionary reasoning from animal/cell data, not a demonstrated clinical interaction.

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 Dou Chi Jiang (Radix et Ramus Litseae Cubebae)?

  Yes — several preclinical studies specifically on the root and stem of Litsea cubeba support traditional wind-damp and anti-inflammatory uses, though no human clinical trials have been published.

  • Adjuvant arthritis (rat model) — ethanol and water extracts of Litsea cubeba root (50–200 mg/kg, oral) significantly reduced paw swelling and arthritic scores, lowered serum TNF-α, IL-1β, and IL-6, raised IL-10, and downregulated the inflammatory enzymes COX-2 and 5-LOX — a mechanistic basis consistent with the herb’s traditional wind-damp bi (joint pain) indication. Animal model, not clinical proof.
  • Anti-inflammatory constituents from the root — five compounds isolated from Litsea cubeba root (including a novel fluorenone and known lignans such as pinoresinol and syringaresinol) inhibited nitric oxide and TNF-α production in LPS-stimulated macrophages, acting through the NF-κB signaling pathway.
  • Chemistry of the roots and stems specifically — two new compounds (litsecols A and B, a monoterpene and a lignan) plus nine known compounds were isolated from the roots and stems; several showed anti-inflammatory activity (nitric-oxide inhibition in microglial cells) and two showed neuroprotective effects against oxidative damage in a neuronal cell model.
  • Twig lignans — nineteen lignans isolated from the twigs; some showed selective cytotoxicity against cancer cell lines in vitro, some inhibited inflammatory nitric-oxide production, and one showed moderate inhibition of PTP1B, an enzyme target relevant to diabetes research. Laboratory/cell-line findings, not clinical evidence.
  • Broader ethnopharmacology review — a 2019 review of Litsea cubeba across its traditionally used parts documents folk use for colds, edema, arthritis, diabetes, asthma, and traumatic injury, consistent with the indications recorded for the root and stem.

  All of this is preclinical (cell-line and rodent) evidence; no human clinical trials on Dou Chi Jiang were found.

  Note: The Sacred Lotus records Dou Chi Jiang’s channels as Liver and Lung, matching the English-language TCM database consulted. Several independent Chinese-language materia medica references instead give Stomach, Spleen, and Liver. We could not resolve whether this reflects the current Chinese Pharmacopoeia standard versus a regional/historical variant, so the Sacred Lotus sources & references is left unchanged pending owner review.

  Sources: PMID 23538163 (adjuvant arthritis, root extract, rat); PMID 26731513 (anti-inflammatory constituents, root, LPS-macrophage); PMID 26651866 (chemical constituents of roots and stems); PMC 6359749, DOI 10.3390/molecules24020306 (twig lignans); PMC 6631214, DOI 10.3390/plants8060150 (ethnopharmacology review). Research context, not a therapeutic claim.

Chinese Herb Notes

• Is Dou Chi Jiang the same as Bi Cheng Qie? How are they different?

  No — Dou Chi Jiang and Bi Cheng Qie both come from the plant Litsea cubeba, but they are different medicinal parts with different actions and dosing. Dou Chi Jiang is the root and stem (Radix et Ramus Litseae Cubebae); Bi Cheng Qie is the dried ripe fruit (Fructus Litseae).

  • Dou Chi Jiang (root and stem) — disperses wind-cold and wind-dampness in addition to warming the middle; broader traditional use (common cold, wind-damp joint pain, edema, trauma); dosed relatively high, roughly 15–30 g.
  • Bi Cheng Qie (fruit) — warms the Middle Jiao and also the Kidney/Bladder to stop pain and vomiting, with a signature use for cold, painful urinary dribbling; dosed much lower, roughly 1.5–6 g. See the Bi Cheng Qie entry for full detail.

  Both are pungent, warm, and aromatic, and both sit in the Herbs that Warm the Interior and Expel Cold category, but they are not interchangeable in indication or dose.

  Source: Chinese materia medica references (Dou Chi Jiang); Sacred Lotus Bi Cheng Qie entry (bi-cheng-qie-litsea) for the fruit comparison.