Qian Nian Jian
StarHomalomena occulta (Lour.) Schott
Traditionally used for
- Pain & joints
Cautions & contraindications
- Toxic — professional use only
☯ TCM Properties
Dispels Wind-Dampness; Strengthens the Sinews and Bones; Unblocks the Channels and Collaterals; Alleviates Pain; Reduces Swelling
Traditional Chinese Uses
Qian Nian Jian (homalomena rhizome, thousand-year health rhizome) is a warm, pungent-bitter herb used to expel Wind-Cold-Damp from the bones and sinew and to tonify Kidney Yang. It is used for chronic joint and lower back pain from Wind-Cold-Damp bi obstruction, especially when combined with Kidney deficiency — making it suited to elderly patients with both deficiency and obstruction. It is commonly prepared as a medicated wine to enhance its warming, channel-penetrating action.
Relationships
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Botanical Description
Homalomena occulta is a perennial aroid herb of the family Araceae, native to the moist understory of subtropical forests across southern China, Indochina, and parts of Southeast Asia. The plant produces a thick, creeping, aromatic rhizome from which arise long-petioled, glossy, cordate to sagittate leaves with prominent venation, forming dense clumps up to 60 cm tall. The inflorescence is a typical aroid spadix subtended by a pale green to whitish spathe, with unisexual flowers; fruiting is a cluster of small berries. The rhizome is fleshy, cylindrical, knotty, and yields a distinctive camphoraceous, pungent aroma when broken, owing to its content of sesquiterpenes and essential oils. It thrives in shaded, humid, well-drained humus-rich soils.
Active Constituents
Oplopanone and related oplopanane sesquiterpenoids
Oplopanane sesquiterpenoidConcentration: Characteristic of the rhizome; naturally occurring oplopananes are otherwise rarely reported
The structural class most associated with this rhizome and used as its chemical signature. Oplopanone inhibited lipopolysaccharide-induced nitric oxide production in mouse macrophages with an IC50 of 7.78 micromolar, which is the kind of anti-inflammatory activity that would be expected to underlie a wind-damp dispelling drug.
Eudesmane sesquiterpenoids (including 1-beta,6-beta-dihydroxy-7-epi-eudesm-11(13)-ene and 3-beta,4-alpha-dihydroxy-7-epi-eudesm-11(13)-ene)
Eudesmane sesquiterpenoidConcentration: The largest single sesquiterpenoid group isolated from the rhizome
Several of these inhibit nitric oxide production in macrophages at low micromolar concentrations; the two named here gave IC50 values of 3.25 and 6.51 micromolar respectively, more potent than oplopanone itself. They represent the most active fraction identified in the rhizome to date.
Homalomenins A to E
Sesquiterpenoids of isodaucane, guaiane, eudesmane and oppositane skeletonsConcentration: New compounds isolated from the rhizome; abundance not quantified
Structurally novel sesquiterpenoids reported from the rhizome, one of them the first known 1,4-oxa-oppositane. Together with two aromadendrane sesquiterpenoids from the same isolation, one of these suppressed lipopolysaccharide-induced COX-2 messenger RNA, COX-2 protein and prostaglandin E2 production dose-dependently in macrophages.
Homalomenol A and 2-alpha-hydroxyhomalomenol
Cadinane and eudesmane-type sesquiterpene alcoholsConcentration: Minor constituents of the alcohol extract of the rhizome
Sesquiterpene alcohols named for the genus and used as chemotaxonomic markers of Homalomena. No independent pharmacological activity has been established for them.
T-Muurolol
Cadinane sesquiterpene alcoholConcentration: Minor constituent of the rhizome alcohol extract
A widely distributed sesquiterpene alcohol with reported antimicrobial and antifungal activity in other species. Its contribution to the clinical action of this rhizome has not been studied.
Calcium oxalate raphides
Biomineral needle crystalsConcentration: Not quantified for this species; Araceae is one of only six angiosperm families in which raphides are recorded in all four organ categories including stems and roots, and 76.6 percent of studied Alismatales form them
Recorded here because the family-level expectation for an aroid rhizome is that raphides are present, and no published assay specific to Homalomena occulta was found either way. In other aroid drugs and foods, needle-shaped calcium oxalate crystals are the cause of immediate oral, pharyngeal and gastric irritation on chewing raw material, and are the reason drugs such as Ban Xia and Tian Nan Xing require processing before use. Absence of an assay is not evidence of absence.
⚠ Drug Interactions
Other raphide-bearing aroid drugs (Pinellia ternata, Arisaema species, Alocasia species)
Homalomena occulta is an aroid, and the Araceae is a family in which calcium oxalate raphides are documented across leaves, reproductive organs, stems and roots; within the order Alismatales, 76.6 percent of the species investigated form raphides. In related aroid drugs and foods the raphides produce immediate mucosal injury on contact, and Alocasia poisoning from needle crystals is a recognised presentation. No raphide assay specific to Homalomena occulta was located, so the risk here is inferred from family membership rather than measured, but it is the correct default for an unprocessed aroid rhizome.
Clinical note: Do not add raw powdered Qian Nian Jian to a formula that already contains raw Ban Xia or raw Tian Nan Xing, and do not let a patient chew the raw rhizome. Decoction or alcohol extraction is the traditional route and is the safer one. Any burning of lip, tongue or throat immediately after a dose should be treated as a raphide reaction and the preparation reviewed rather than being ascribed to the patient's constitution.
Ethanol, disulfiram, metronidazole and drugs with alcohol interactions
Qian Nian Jian is characteristically dispensed as a medicinal wine or spirit-based tincture, because its active sesquiterpenoids are lipophilic and extract poorly into water; the published phytochemistry of the rhizome comes from alcohol extracts. That preparation carries an ethanol dose which the herbal label rarely states. The interaction risk therefore belongs to the vehicle: disulfiram-like reactions with metronidazole, tinidazole and cephalosporins bearing an N-methylthiotetrazole side chain, additive sedation with benzodiazepines and opioids, and additive hepatotoxicity with methotrexate or paracetamol.
Clinical note: Always establish whether the patient is taking a decoction or a medicinal wine, and quantify the daily ethanol intake if it is the latter. In patients on metronidazole, disulfiram, or in recovery from alcohol use disorder, in pregnancy, or in liver disease, use a decoction or drop the herb rather than dispensing the traditional wine.
NSAIDs and selective COX-2 inhibitors
Sesquiterpenoids from this rhizome suppress lipopolysaccharide-induced COX-2 messenger RNA and protein and prostaglandin E2 production in macrophages in a dose-dependent way, and several inhibit inducible nitric oxide production at single-digit micromolar concentrations. That is the same enzyme target as a non-steroidal anti-inflammatory drug, so additive effect is expected on mechanism. There is no human study, and no evidence that the herb adds to NSAID gastric or renal toxicity.
Clinical note: Combination is unlikely to be harmful and is common practice. Where a patient's pain improves after the herb is added, consider whether the NSAID can be stepped down, particularly in the elderly or those with renal impairment for whom this herb is most often prescribed.
Bisphosphonates, denosumab and other antiresorptive drugs
Seventeen sesquiterpenoids isolated from this species were screened for effects on osteoclast formation and five of them inhibited osteoclastogenesis by more than 90 percent at 10 micromolar. The traditional indication of strengthening sinews and bones therefore has a plausible cellular correlate. Whether any of this reaches bone at achievable oral doses is unknown, and the screening was done on aerial-part isolates rather than on the rhizome that constitutes the drug.
Clinical note: No action is needed and no interaction has been observed. Note it only so that improvement in bone density markers in a patient taking both is not attributed to the pharmaceutical alone, and so that the herb is not sold to patients as a substitute for an antiresorptive drug on the strength of an in vitro screen.
Homalomena aromatica and other Homalomena species supplied as Qian Nian Jian
Homalomena is a large genus and several species are traded medicinally. Homalomena aromatica in particular is a separate drug used in India and Southeast Asia, valued for a linalool-rich aromatic essential oil and studied for mosquito-repellent, antioxidant and neuropharmacological activity; that literature is not about Homalomena occulta and its findings should not be attached to this monograph. The pharmacopoeial drug Qian Nian Jian is the rhizome of Homalomena occulta specifically, and the anti-inflammatory sesquiterpenoid chemistry described above is what has been characterised in that species.
Clinical note: Require the binomial on the certificate of analysis. Treat any supplier document naming only Homalomena, or citing aromatic oil or perfumery grade, as evidence that the material may not be Homalomena occulta rhizome. This matters more than usual here because there is no clinical trial evidence for either species to fall back on.
Dosage
| Form | Amount | Frequency | Duration | Population | Notes |
|---|---|---|---|---|---|
| decoction | 5–10 g | Daily | — | — | 中国药典 2020 【用法与用量】5～10g。 【性味与归经】苦、辛，温。归肝、肾经。 — Chinese Pharmacopoeia 2020, quoted verbatim; route and cautions preserved. Replaces a cleared category-filler value. |
Evidence Tier
Moderate evidence · 6 studiesRecorded studies by study design, strongest design at the top. This is a study-design tier only, not a GRADE rating: it does not weigh risk of bias, consistency or precision.
Systematic review / meta-analysis
0
Randomized controlled trial
0
Other clinical trial
0
Observational / case report
0
In vitro / animal
5
4 verified · 1 unverified
Show 5 studies
- Further sesquiterpenoids from the rhizomes of Homalomena occulta and their anti-inflammatory activity
- Sesquiterpenoids from rhizome of Homalomena occulta
- New sesquiterpenes from the rhizomes of homalomena occulta
- Sesquiterpenoids from the Rhizomes of Homalomena occulta
- Sesquiterpenoids from the Homalomena occulta (Lour.) Schott and their anti-osteoclast genesis activity
Other / unclassified
1
1 verified · 0 unverified
Verified: design read from PubMed for a DOI that resolves to the cited paper Unverified: taken from the study's recorded description
Clinical Studies
Further sesquiterpenoids from the rhizomes of Homalomena occulta and their anti-inflammatory activity
Nineteen sesquiterpenoids were isolated from the rhizomes, spanning isodaucane, guaiane, eudesmane, oppositane and aromadendrane skeletons, with five new compounds named Homalomenins A to E, one of which has a rare skeleton and one of which is the first reported 1,4-oxa-oppositane. Three of the isolates suppressed lipopolysaccharide-induced COX-2 messenger RNA, COX-2 protein and prostaglandin E2 production dose-dependently in RAW264.7 macrophages. This is a cell-based chemical study; it identifies a plausible anti-inflammatory basis for the traditional use in rheumatoid arthritis but does not test the drug in an animal or a patient.
Sesquiterpenoids from rhizome of Homalomena occulta
Twelve sesquiterpenoids were isolated from an alcohol extract of the rhizome, seven of them reported from the genus for the first time, including oplopanone, 2-alpha-hydroxyhomalomenol, T-muurolol and homalomenol A. Three compounds inhibited lipopolysaccharide-induced nitric oxide production in RAW264.7 macrophages, with IC50 values of 6.51, 3.25 and 7.78 micromolar for 3-beta,4-alpha-dihydroxy-7-epi-eudesm-11(13)-ene, 1-beta,6-beta-dihydroxy-7-epi-eudesm-11(13)-ene and oplopanone respectively. The eudesmanes were more potent than oplopanone, the compound usually treated as the marker.
New sesquiterpenes from the rhizomes of homalomena occulta
Fourteen sesquiterpenes were isolated from the rhizomes, six of them new, with absolute configurations of three confirmed by X-ray crystallography. Two inhibited lipopolysaccharide-induced nitric oxide production in macrophages, with IC50 values of 21.2 and 15.4 micromolar, an order weaker than the most active eudesmanes reported elsewhere. Taken with the other isolation studies it establishes that the anti-inflammatory activity of this rhizome is spread across many structurally distinct sesquiterpenoids rather than concentrated in one marker compound.
Sesquiterpenoids from the Rhizomes of Homalomena occulta
Isolation of six oplopanane sesquiterpenoids from the rhizomes, four of them new and one a 3,5-seco-oplopanane, alongside three known sesquiterpenoids and three further oplopananes made by chemical transformation. Naturally occurring oplopananes are rare, which makes them useful as an identity marker for this drug. The paper is structural and contains no bioactivity testing.
Sesquiterpenoids from the Homalomena occulta (Lour.) Schott and their anti-osteoclast genesis activity
Seventeen sesquiterpenoids were isolated, in this case from the aerial part rather than the rhizome, including two new compounds designated Homoccusions A and B. All were screened for effects on osteoclast formation and five inhibited osteoclastogenesis by over 90 percent at 10 micromolar. It offers the first cellular correlate for the classical claim that this drug strengthens sinew and bone, with the important caveat that the material tested was not the pharmacopoeial plant part.
Systematic review on raphide morphotype calcium oxalate crystals in angiosperms
Systematic survey of needle-shaped calcium oxalate crystals across the angiosperms, covering 1305 species in 76 families with raphides confirmed in 797 species across 46 families. Alismatales, the order containing the Araceae, had by far the highest proportion of raphide-forming species among well-sampled orders at 76.6 percent, and the Araceae is one of only six families in which raphides are recorded in all four organ categories, stems and roots included. Included here for the family-level inference about an aroid rhizome drug: no Homalomena occulta-specific raphide assay was found, and this review is the basis for treating their presence as the default expectation rather than assuming absence.
Historical Texts
Ben Cao Gang Mu Shi Yi (Supplement to the Compendium of Materia Medica), Zhao Xuemin
Qing dynasty, 1765Zhonghua Renmin Gongheguo Yaodian (Pharmacopoeia of the People's Republic of China)
Modern, current editionsRegional and ethnomedical use in southern China and Vietnam
Qing dynasty to presentReferences
- Elbandy M, Lerche H, Wagner H, Lacaille-Dubois MA. Constituents of the rhizome of Homalomena occulta . Biochemical Systematics and Ecology (2004) [DOI]
- Zhang Q, Ma L, Qu Z, Hou G, Wang Y, Wang C, Zhao F. Purification, characterization, crystal structure and NO production inhibitory activity of three new sesquiterpenoids from homalomena occulta . Acta Crystallographica Section C Structural Chemistry (2018) [DOI]
- Yanagawa Y, Nagasawa H. Alocasia odora poisoning due to calcium oxalate needle crystals in Japan . Journal of Rural Medicine (2024) [DOI]
This information is for educational purposes only and is not intended to replace professional medical advice. Always consult a qualified healthcare provider before using any herbal remedy, especially if you are pregnant, nursing, or taking medications.
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