Su He Xiang (Rose Maloes Resin)

Chinese Herb Actions

Chinese Herb Dosage

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

  Roughly 0.3–1 g, taken only in pills or powder — never decocted. Su He Xiang's therapeutic value is its volatile aromatic fraction, which is destroyed by prolonged boiling, so it is never added to a decoction. In practice it is almost always encountered ready-made, inside prepared pill formulas such as Su He Xiang Wan (typically one pill, one to two times daily, with warm water) rather than dosed as a raw single herb.

  Source: materia medica consensus (Bensky, Materia Medica, 3rd ed.); standard prepared-formula dosing conventions. Reference only — not a prescription.

Chinese Herb Contraindications & Cautions

• Are there cautions for Su He Xiang?

  Su He Xiang is contraindicated in pregnancy and, as a strongly moving, orifice-opening aromatic, is reserved for cold-type closed/collapse patterns rather than general use. It is not appropriate for heat-type closed disorders (which call for cooling aromatics such as Bing Pian instead) or for patterns of collapse with profuse sweating (yang desertion), and because correct use depends on distinguishing cold- from heat-type collapse — a clinical judgment — it is best used under a qualified practitioner, in an emergency/short-term context rather than as ongoing therapy.

  • Preparation caution — must be taken only in pills or powder; its aromatic constituents are lost if decocted (see dosage).
  • Pregnancy — contraindicated; Su He Xiang Wan additionally contains She Xiang (Musk), among the most strongly prohibited substances in pregnancy in classical TCM.

  Source: materia medica consensus (Bensky, Chen & Chen) on aromatic orifice-opening herbs and pregnancy contraindications. Reference note, not medical advice.

Chinese Herb Toxicity & Overdose

• Classically regarded as non-toxic. A modern genotoxicity/mutagenicity safety evaluation of Styrax liquidus found no mutagenicity in bacterial assays and no chromosomal damage in mice at doses up to 2,000 mg/kg, supporting a favorable safety profile at the laboratory level. This is preclinical, dose-ranging safety data, not a guarantee of safety at any dose in humans — traditional use still restricts Su He Xiang to short-term, emergency-type use in prepared pills at low gram-range doses (see dosage/cautions).

  Source: PMID 27737816 (Journal of Ethnopharmacology, 2016, genotoxicity/mutagenicity safety evaluation of Styrax liquidus). Reference note, not a safety guarantee.

Herb-Drug Interactions

• No well-established clinical herb–drug interactions are documented. Given Su He Xiang's traditional use for cold/phlegm-stagnation chest pain and preclinical findings of antithrombotic and cardioprotective activity in animal models (below), practitioner awareness is reasonable for patients on antiplatelet, anticoagulant, or other cardiac medications — this is precautionary, based on preclinical signals, not a demonstrated clinical interaction. (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 Su He Xiang (Liquidambar orientalis resin / Styrax Liquidis)?

  Yes — a growing body of preclinical (cell and animal) research, mostly from Turkey (native range of the source tree) and China, with no human clinical trials identified. Studies examine the resin's cardioprotective, anti-inflammatory, antithrombotic, gastroprotective, and safety profile.

  • Cardioprotective (myocardial ischemia) — in an animal/cell model, a Styrax extract improved mitochondrial function and reduced cardiac damage after myocardial ischemic injury via the AMPK-PGC1α signaling pathway — a mechanistic finding consistent with, though not proof of, the traditional use of Su He Xiang and its derivative pill formulas for cold/phlegm-stagnation chest pain.
  • Antithrombotic & myocardial infarction protection — in a zebrafish model, styrax resin reduced clot-related tail congestion, improved blood flow, and mitigated myocardial infarction area, comparing grafted-tree resin to conventional wild-harvested resin as a potential sustainable source; both showed cardioprotective activity.
  • Anti-inflammatory — five previously undescribed compounds isolated from Liquidambar orientalis resin showed anti-inflammatory activity in LPS-stimulated macrophage (RAW264.7) cell culture.
  • Gastroprotective — oral doses of 150–300 mg/kg of Styrax liquidus showed significant protection against ethanol-induced gastric ulcers in rats, alongside chemical characterization of the resin's volatile constituents.
  • Safety — a dedicated genotoxicity/mutagenicity evaluation found no mutagenic or genotoxic effect at doses up to 2,000 mg/kg in mammalian models (see toxicity).

  All findings above are cell-culture or animal-model research; no human clinical trials of Su He Xiang/Styrax were identified in this search, so evidence should be read as mechanistic/preclinical context, not clinical proof.

  Sources: PMID 37897405 (Journal of Pharmacy and Pharmacology, 2023, myocardial ischemia/AMPK-PGC1α, animal/cell model); PMID 38181063, PMC 10769069 (PLOS ONE, 2024, antithrombotic activity & myocardial infarction protection, zebrafish model); PMID 39066681 (Journal of Asian Natural Products Research, 2025, anti-inflammatory compounds, cell model); PMID 23588094 (Journal of Ethnopharmacology, 2013, anti-ulcerogenic effect, rat model); PMID 27737816 (Journal of Ethnopharmacology, 2016, genotoxicity/mutagenicity safety evaluation). Research context, not a therapeutic claim.

Chinese Herb Notes

• How is Su He Xiang used in Su He Xiang Wan, and how does it differ from related aromatics?

  Su He Xiang is the eponymous, lead herb of Su He Xiang Wan (“Liquid Styrax Pill”), the classical formula for cold-type closed/collapse emergencies, though it works alongside several other potent aromatic orifice-openers rather than acting alone. The Sacred Lotus confirms the formula's 15-herb composition, including She Xiang (Musk), Bing Pian (Borneol), An Xi Xiang (Benzoin), Mu Xiang, Tan Xiang (Sandalwood), Chen Xiang (Aloeswood), Ru Xiang (Frankincense), Ding Xiang (Clove), Xiang Fu, Bi Ba, Xi Jiao, Zhu Sha, Bai Zhu, and He Zi.

  • Su He Xiang vs. Bing Pian (Borneol) — the two are the classic contrasting pair among orifice-opening aromatics: Su He Xiang is warm and suited to cold-type closed disorders, while Bing Pian is cooling and suited to heat-type closed disorders (e.g., An Gong Niu Huang Wan). Formula selection traditionally hinges on this cold/heat differentiation.
  • Su He Xiang vs. She Xiang (Musk) — both are intensely aromatic orifice-openers used together in Su He Xiang Wan; She Xiang is regarded as the stronger of the two for penetrating and reviving consciousness, with Su He Xiang contributing warming, qi-moving, and pain-relieving action alongside it.

  Note on naming: the pharmaceutical Latin name “Styrax”/“Styrax Liquidis” (as recorded in the Sacred Lotus) is historical usage; botanically the resin comes from Liquidambar orientalis Mill. (family Hamamelidaceae), not from the genus Styrax (family Styracaceae), which instead yields benzoin (An Xi Xiang, a separate ingredient in the same formula). Both substances are traditionally called by similar names in English (storax/benzoin), which has historically led to confusion between them; we keep our existing Latin field as-is pending owner review.

  Source: Sacred Lotus (formula composition, herb identity); materia medica consensus on cold vs. heat orifice-opening differentiation (Bensky, Chen & Chen).