Traditionally used for
- Teeth & mouth
- Nerves & recovery
- Pain & joints
☯ TCM Properties
Dispels Wind, dries Dampness and stops pain; Strengthens tendons and muscles and opens the channels
Traditional Chinese Uses
Song Jie (Lignum Pini Nodi) is the dense, resin-saturated knotwood of Pinus tabuliformis and related Chinese pines, classed among the herbs that dispel Wind-Dampness. Bitter, pungent and warm, entering the Liver and Kidney channels, it dispels Wind, dries Dampness and unblocks the channels to relieve painful obstruction (Bi syndrome). It is favored for chronic, Cold-predominant joint and sinew pain, wandering aches, numbness and stiffness of the extremities, and difficulty flexing and extending, where its warm, drying nature both strengthens the tendons and stops pain.
Because it moves Blood and eases pain in the channels, Song Jie is also applied to traumatic injury, sprains and post-injury swelling, and to toothache. It is typically decocted or, more commonly, extracted in wine (a medicated liquor) for rheumatic complaints. Being warm and drying, it is used cautiously in Yin-deficient or Heat patterns.
Western Herbalism Properties
Relationships
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Botanical Description
Song Jie is the dried resinous knotwood of Pinus tabuliformis, P. massoniana or related Chinese pines (Pinaceae), harvested where a branch joins the trunk and the dense, resin-saturated heartwood persists after the surrounding sapwood has decayed. The source trees are evergreen conifers 15–30 m tall with reddish-brown, scaly bark in plates, paired (or sometimes triple) needles 8–18 cm long in bundles, and ovoid seed cones 4–9 cm long with thickened, often umbonate scale apophyses. The pine-knot itself is a dense, hard, dark amber-brown to reddish-brown chunk of wood, highly aromatic and oily, traditionally split into shards for decoction or soaked in wine.
Active Constituents
Volatile oil of the pine node (turpentine fraction)
Monoterpene hydrocarbonsConcentration: A small percentage of the node by mass; alpha-pinene and beta-pinene are reported to account for about 90 percent or more of the volatile oil
The aromatic, resinous principle that gives the sliced node its turpentine smell and slightly bitter, acrid taste, and the reason the drug is classically extracted in wine rather than water. Pinene-rich turpentine is a mucosal and dermal irritant at concentration, and this is the fraction that carries that liability.
Resin acids of the colophony fraction
Diterpene resin acids (abietane and pimarane type)Concentration: The knot of a pine is the most extractive-rich part of the tree; coniferous knotwood has been reported to contain from 3.9 to 17 percent extractive substances by mass
Abietic-type resin acids and their air-oxidation products are the sensitising principles of colophony, one of the more common contact allergens in standard patch-test series. A resin-rich pine knotwood applied to skin is therefore a plausible contact allergen, and this is the best-evidenced safety point for the external use of the drug.
Abietane-type diterpenes (pinusins A to F and congeners)
Abietane diterpenoidsConcentration: Trace constituents isolated in two chemistry papers on the drug
Isolated from Pini Lignum Nodi and protective in vitro against paracetamol-induced and hydrogen-peroxide-induced damage in HepG2 hepatocytes, with several congeners exceeding the bicyclol positive control in the second study. The plant material in both papers was specified as the nodes of Pinus massoniana Lamb., not Pinus tabuliformis, so this chemistry has been demonstrated on the other of the drug's two permitted botanical origins.
Cellulose and lignin
Structural polysaccharide and polyphenolic polymerConcentration: The bulk of the woody node
The inert wood matrix. It matters mainly in that the drug is dense hard wood, which is why the classical preparations are long alcohol steeps or dry stir-frying to the point of charring rather than a short decoction.
Knotwood lignans and stilbenes
Lignans (nortrachelogenin, pinoresinol, matairesinol) and stilbenes (pinosylvin and pinosylvin monomethyl ether)Concentration: The dominant polyphenol classes of pine knotwood as a tissue; quantified in Pinus sylvestris and other conifers rather than in Pinus tabuliformis
Pine knotwood is the most lignan-rich tissue of the tree and the basis of an industrial lignan supply; knotwood extractives of Scots pine also carry pinosylvin and its methyl ether. These compounds are strong antioxidants in vitro. They are recorded here with an explicit caveat: the analytical literature on knotwood polyphenols is almost entirely on European conifers, and the corresponding profile of Pinus tabuliformis knotwood has not been published, so this is a tissue-level expectation rather than a species-level measurement.
⚠ Drug Interactions
Topical application in a patient with colophony contact allergy
Pine knot is a resin-saturated tissue and the resin acids it carries are the sensitisers of colophony. A 2026 systematic review and meta-analysis of seventy-three studies covering 459,757 dermatitis patients put the pooled prevalence of colophonium contact allergy at 3.54 percent, with clinical relevance in 39.42 percent of positives and the highest regional prevalence in Southeast Asia at 6.83 percent. Sensitisation rates have not fallen over recent decades. The classical external uses of Song Jie, in plasters and in wine washes, put this resin directly onto skin, often under occlusion.
Clinical note: Ask about reactions to sticking plasters, rosin, adhesive dressings or violin rosin before prescribing any pine-containing plaster or external wash. A colophony-positive patch test is a reason to avoid external Song Jie entirely.
Metronidazole, disulfiram, sedatives and any drug incompatible with ethanol
The characteristic preparation of this drug is a strong alcoholic steep, not a water decoction, because the active resin and volatile fractions are poorly water-soluble. The Wai Tai formula for wandering joint pain steeps twenty jin of pine node in five dou of wine for three weeks and doses one he five or six times a day; Tao Hongjing's note on the drug is simply to brew it as wine. Modern medicinal-wine preparations follow the same logic. The interaction is with the ethanol vehicle rather than with the pine: disulfiram-like reactions with metronidazole and related agents, additive sedation with benzodiazepines, opioids and antihistamines, and the usual problems in hepatic impairment and in recovery from alcohol dependence.
Clinical note: Establish which preparation the patient has. If it is a medicinal wine, count it as an alcoholic drink and check it against the rest of the medication list. Substitute a decoction or an external preparation for anyone in whom ethanol is contraindicated.
Inhaled or ingested pinene-rich pine volatile oil in asthma and reactive airways
The volatile fraction of the node is roughly nine-tenths alpha-pinene and beta-pinene, and turpentine-type monoterpene vapour is a recognised respiratory and mucosal irritant. The dose delivered by a decoction or a plaster is far below occupational turpentine exposure, so this is a caution rather than a documented interaction, but it bears on hot steam applications and on charring the drug indoors.
Clinical note: Avoid steam or fumigation applications in asthmatic patients, and prepare charred Song Jie with ventilation.
Song Hua Fen and other drugs from the same tree
Pinus tabuliformis yields several distinct official drugs, and the pharmacopoeia admits both this species and Pinus massoniana as the origin of the node. The Ben Cao Gang Mu already separates Song Jie, Song Hua, Song Ye, Song Zhi and Song Yi into distinct entries with different natures and indications; Li Shizhen's remark that the node is the bone of the pine, hard and long-lasting and therefore suited to wind-damp disease of the sinews and bones, is an explicit statement that the parts are not interchangeable. Modern chemistry bears this out: the node is a resin and lignan tissue, the pollen is a fibre and polysaccharide material, and no evidence transfers between them.
Clinical note: Check the plant part named on the prescription. Song Jie is knotwood, Song Hua Fen is pollen, Song Xiang is rosin and Song Ye is needle; substituting one for another is not a dose adjustment but a change of drug.
Evidence Tier
Strong evidence · 4 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
1
1 verified · 0 unverified
Randomized controlled trial
0
Other clinical trial
0
Observational / case report
0
In vitro / animal
3
0 verified · 3 unverified
Other / unclassified
0
Verified: design read from PubMed for a DOI that resolves to the cited paper Unverified: taken from the study's recorded description
Clinical Studies
Three undescribed diterpenoids from Pini Lignum Nodi with hepatoprotective activities
Three new abietane-type diterpenes, pinusins A to C, were isolated from the drug together with five known diterpenoids, a flavonoid and a monoterpene, with absolute configurations assigned by electronic circular dichroism calculation. Six of the compounds protected HepG2 cells against paracetamol-induced damage at 10 micromolar. The plant material is stated as the dried tuberculate or branched nodes of Pinus massoniana Lamb., which is the other of the two species the pharmacopoeia permits for this drug, not Pinus tabuliformis.
Hepatoprotective diterpenes from the nodes of Pinus massoniana
Companion study isolating three further new diterpenes, pinusins D to F, plus twelve known diterpenes from the same drug. Twelve of the compounds showed moderate protection of HepG2 cells against hydrogen peroxide oxidative damage and eleven of those exceeded the bicyclol positive control. Again the material was the dried nodes of Pinus massoniana. Cell-culture work only, with no in vivo or clinical follow-up, and hepatoprotection is not a traditional indication of this drug.
Prevalence of Contact Allergy to Colophonium in Dermatitis Patients: A Systematic Review and Meta-Analysis
Seventy-three studies covering 459,757 dermatitis patients were pooled. Prevalence of colophonium contact allergy was 3.54 percent (95 percent confidence interval 3.01 to 4.16), with clinical relevance in 39.42 percent of positive tests and the highest regional figure in Southeast Asia at 6.83 percent. Prevalence was 3.31 percent in children and 1.31 percent in adults, and did not differ significantly by atopic dermatitis status. Sensitisation has been stable across recent decades. The subject is colophony, the pine resin fraction, rather than the knotwood drug itself, and it sets the background risk for any resinous pine preparation applied to skin.
Comprehensive Characterization of Chemical Composition and Antioxidant Activity of Lignan-Rich Coniferous Knotwood Extractives
Knotwood of Norway spruce, Scotch pine, Siberian fir and Siberian larch was characterised by two-dimensional nuclear magnetic resonance with high-resolution Orbitrap mass spectrometry and assessed for antioxidant activity by three complementary methods. Extractive content ranged from 3.9 to 17 percent, with twelve monolignans and twenty-seven oligolignans tentatively identified, and antioxidant activity comparable to Trolox in single-electron transfer and superoxide scavenging. Pinosylvin, its methyl ester and pterostilbene were found in the Scotch pine extractives. None of the species studied is Pinus tabuliformis; the paper is included to establish what the knotwood tissue characteristically contains and how much of it is extractable.
Historical Texts
Ming Yi Bie Lu (Miscellaneous Records of Famous Physicians), quoted in the Song Jie entry of the Ben Cao Gang Mu
Han to Southern and Northern dynasties compilation, circa 500 CEBen Cao Gang Mu (Compendium of Materia Medica), Li Shizhen, wood section, entry Song Jie
Ming dynasty, 1596Pharmacopoeia of the People's Republic of China, Pini Lignum Nodi (You Song Jie)
Modern, 2020 editionReferences
- Ekman R, Willför S, Sjöholm R, Reunanen M, Mäki J, Lehtilä R, Eckerman C. Identification of the Lignan Nortrachelogenin in Knot and Branch Heartwood of Scots Pine (Pinus sylvestris L.) . Holzforschung (2002) [DOI]
- Falev DI, Voronov IS, Onuchina AA, Faleva AV, Ul'yanovskii NV, Kosyakov DS. Analysis of Softwood Lignans by Comprehensive Two-Dimensional Liquid Chromatography . Molecules (2023) [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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