Chen Xiang (Aloeswood, Aquilaria)

Chinese Herb Actions

Chinese Herb Dosage

• What is the typical dosage of Chen Xiang, and how is it prepared?

  Roughly 1–1.5 g — and almost always taken as a fine powder or added only in the final minutes of decoction, never boiled with the rest of the formula for the full cooking time, because prolonged heat drives off the aromatic oils that carry its qi-moving and Kidney-warming action.

  • Standard range — 1–1.5 g, added post-decoction (after the other herbs have been strained), per both Bensky and Chen & Chen.
  • Preparation — because it is aromatic, volatile, and expensive, it is commonly ground to powder and either stirred into the strained decoction or swallowed directly, rather than boiled as part of the main pot.

  Source: Sacred Lotus sources & references (Bensky; Chen & Chen). Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Chen Xiang?

  Yes — traditional sources caution against its use in yin deficiency with heat/fire signs and in qi collapse or organ prolapse, since its warming, downward-directing action can aggravate both patterns.

  • Yin deficiency with fire (e.g., night sweats, malar flushing, five-palm heat) — avoid or use only with caution.
  • Qi collapse / organ prolapse — its qi-descending action runs contrary to what these patterns require.

  Source: Sacred Lotus sources & references (Bensky; Chen & Chen).

Chinese Herb Toxicity & Overdose

• Low at traditional doses. Agarwood also has a long history as an incense and flavoring material with no significant toxicity reported at the small (1–1.5 g) medicinal dose. The main real-world safety concern is not the genuine herb but adulterated or synthetic “agarwood” products — oil diluted with patchouli or other chemical additives, or immature/plantation wood artificially inoculated to fake resin content — where the contaminant, not agarwood itself, is the risk.

  Source: cross-referenced against multiple online sources (agarwood trade/adulteration reporting); materia medica consensus. Reference note, not a safety guarantee.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented for Chen Xiang in the literature reviewed. (Flagged for practitioner confirmation given its Kidney/urinary and gastrointestinal actions.)

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 Chen Xiang (Aquilaria)?

  Yes, but mostly preclinical chemistry and pharmacology — while the trees themselves are a live conservation and trade-regulation priority.

  • Conservation/trade status — Aquilaria malaccensis was placed on CITES Appendix II in 1995; the listing was extended to all Aquilaria species in 2004 (with some countries holding reservations), reflecting overharvesting and habitat loss in wild populations, and driving very high prices for top-grade wild resin-wood.
  • Pharmacology (preclinical) — a scoping review found agarwood extracts and isolated chromones inhibit NF-κB activation, LPS-induced nitric oxide production, and the growth of bacteria (Staphylococcus aureus, Bacillus subtilis) and fungi (Candida albicans, Fusarium oxysporum) in laboratory studies; the authors note the absence of human clinical trials to date. PMID 39596767.
  • Chemistry — a systematic review catalogued 367 sesquiterpene and chromone compounds identified across the four major Aquilaria species used to produce agarwood. PMID 35520206.
  • Adulteration — top-grade agarwood can sell for roughly $100,000–$290,000 US per kilogram, versus roughly $100/kg for plantation or artificially inoculated material; this price gap makes adulteration of both wood and oil (e.g., dilution with patchouli or other substances) common in commercial trade.

  Human clinical evidence is essentially absent; current support is preclinical (in vitro/chemistry) plus trade/conservation documentation.

  Sources: PMID 39596767; PMID 35520206; cross-referenced against multiple online sources for CITES listing and trade/pricing data. Research and trade context, not a therapeutic claim.

Chinese Herb Notes

• How is Chen Xiang combined, and what makes it distinctive?

  Chen Xiang's signature is pairing qi-moving pain relief with a genuine ability to help the Kidney grasp qi — most qi-regulating herbs (Mu Xiang, Chen Pi) do not reach the Kidney, and most Kidney-qi-grasping herbs (Hu Tao Ren, Wu Wei Zi) do not move qi or relieve pain the way Chen Xiang does.

  • Si Mo Tang — with Mu Xiang, Bing Lang, and Wu Yao, for qi stagnation with rebellious qi.
  • Hei Xi Dan and Hui Chun Dan — Kidney-grasping-qi / severe wheezing rescue formulas.
  • Zi Xue Dan and Su He Xiang Wan — aromatic, orifice-opening formulas.
  • Nuan Gan Jian — Liver-Kidney warming; Gun Tan Wan — phlegm-purging.

  Because genuine resin-dense agarwood is scarce and extremely costly, commercial substitutes and synthetic-oil-soaked wood circulate widely (see Research) — sourcing verified material matters for both cost and reliability of action.

  Source: Sacred Lotus sources & references (Bensky; Chen & Chen; Sacred Lotus formula cross-references).

This herb is from an endangered/protected species and is illegal in the United States