Cadinene
A family of woody, herbal sesquiterpenes found in trace amounts in cannabis and many conifer and herb essential oils.
Cadinene is one of those terpenes that shows up on cannabis lab reports occasionally but rarely in meaningful amounts. It's a real compound with a well-characterized woody aroma, and there's a decent body of plant chemistry research on it. What there isn't is solid human evidence that cadinene does anything specific to your high or your health. Most claims you'll see online about cadinene's effects come from preclinical studies on isolated compounds, often at concentrations you'd never inhale from a joint.
What it is
Cadinene refers to a group of closely related bicyclic sesquiterpene isomers with the molecular formula C15H24. The most commonly discussed are δ-cadinene (delta-cadinene) and γ-cadinene (gamma-cadinene), though α- and ε-forms also exist [1]. Like other sesquiterpenes, cadinenes are built from three isoprene units and are heavier and less volatile than monoterpenes such as Myrcene or Limonene.
δ-Cadinene is biosynthesized in plants by the enzyme δ-cadinene synthase, which cyclizes farnesyl diphosphate (FPP). This enzyme has been studied in detail in cotton (Gossypium), where δ-cadinene is a precursor to the defensive compound gossypol [2]. The name itself comes from Juniperus oxycedrus, the cade juniper, whose oil is rich in cadinene isomers.
Where it's found
Cadinenes are widespread across the plant kingdom. They are notable constituents of:
- Juniper and cade oil (Juniperus spp.) — the namesake source [1]
- Cedar and cypress essential oils
- Cubeb pepper (Piper cubeba) and black pepper
- Hops (Humulus lupulus), a close cousin of cannabis [3]
- Cotton plants, where δ-cadinene serves as a phytoalexin precursor [2]
In cannabis, cadinene typically appears as a minor sesquiterpene. When labs report it at all, concentrations are usually in the trace-to-0.1% range of total terpenes, well below dominant terpenes like myrcene, β-Caryophyllene, or Pinene. It is not a defining terpene of any commercially recognized cannabis chemovar Strong evidence.
Aroma and flavor
Cadinene's odor is described in fragrance and flavor literature as woody, herbal, and faintly spicy, with thujone-like and juniper-like nuances [1]. δ-Cadinene specifically contributes to the characteristic scent of cubeb and to the dry, resinous note in cedarwood oils. In cannabis, where it occurs only in small amounts, it likely contributes background woodiness rather than a recognizable top note. Human odor thresholds for the various cadinene isomers are not well characterized in the published literature.
Effects research — what we actually know
This is where honesty matters. There are no published human clinical trials on inhaled or ingested cadinene. All effect claims rest on in vitro assays or animal studies, usually on cadinene-rich essential oils rather than the isolated compound.
What preclinical work exists:
- Antimicrobial activity: δ-cadinene and cadinene-rich oils have shown activity against various bacteria and fungi in vitro [4]. Weak / limited
- Anti-inflammatory signals: Some cell-culture studies report that δ-cadinene reduces inflammatory markers, but these used direct cell exposure at concentrations not achievable through normal cannabis use [5]. Weak / limited
- Insect-repellent / defensive role in plants: Well documented, especially in cotton [2]. Strong evidence — but this is plant biology, not human pharmacology.
Claims you may see online — that cadinene is sedating, anxiolytic, or contributes specific effects to the cannabis "entourage" — are not supported by direct evidence in humans No data. The broader entourage effect hypothesis itself remains scientifically unsettled, and cadinene specifically has not been a focus of that research [6] Disputed.
Strains dominant in cadinene
Honest answer: there are no widely recognized cannabis cultivars marketed or characterized as cadinene-dominant. Cadinene, when present, is a minor sesquiterpene that rides along with larger fractions of β-caryophyllene, Humulene, and myrcene. Some hashplant and landrace samples report slightly elevated cadinene content, but lab-to-lab variability is high and the compound is not consistently measured on standard commercial terpene panels Weak / limited.
If a budtender tells you a strain is "high in cadinene," ask to see the certificate of analysis — and check whether cadinene was even on the analyte list.
Related terpenes
Cadinene sits within the broader family of bicyclic sesquiterpenes. Chemically and biosynthetically related compounds include:
- β-Caryophyllene — the dominant sesquiterpene in most cannabis
- Humulene — α-humulene, often co-occurring with caryophyllene
- Calamenene — an aromatic dehydrogenation product of cadinene
- Cadinol — the hydroxylated alcohol form, found in some essential oils
- Cubebene — another C15H24 sesquiterpene from cubeb pepper
All share the C15H24 sesquiterpene scaffold derived from farnesyl diphosphate but differ in cyclization patterns and stereochemistry [1].
Sources
- Book Breitmaier, E. (2006). Terpenes: Flavors, Fragrances, Pharmaca, Pheromones. Wiley-VCH.
- Peer-reviewed Chen, X.-Y., Chen, Y., Heinstein, P., & Davisson, V. J. (1995). Cloning, expression, and characterization of (+)-δ-cadinene synthase: a catalyst for cotton phytoalexin biosynthesis. Archives of Biochemistry and Biophysics, 324(2), 255–266.
- Peer-reviewed Eyres, G., Marriott, P. J., & Dufour, J.-P. (2007). The combination of gas chromatography–olfactometry and multidimensional gas chromatography for the characterisation of essential oils. Journal of Chromatography A, 1150(1-2), 70–77.
- Peer-reviewed Hu, Z., Feng, R., Xiang, F., Song, X., Yin, Z., Zhang, C., et al. (2014). Acute and subchronic toxicity as well as evaluation of safety pharmacology of eucalyptus oil-water emulsions. International Journal of Clinical and Experimental Medicine, 7(12), 4835–4845.
- Peer-reviewed Hui, L. M., Zhao, G. D., & Zhao, J. J. (2015). δ-Cadinene inhibits the growth of ovarian cancer cells via caspase-dependent apoptosis and cell cycle arrest. International Journal of Clinical and Experimental Pathology, 8(6), 6046–6056.
- Peer-reviewed Russo, E. B. (2011). Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects. British Journal of Pharmacology, 163(7), 1344–1364.
- Peer-reviewed Booth, J. K., & Bohlmann, J. (2019). Terpenes in Cannabis sativa – From plant genome to humans. Plant Science, 284, 67–72.
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