Quick Summary

Litsea cubeba is a woody aromatic plant widely distributed in parts of China and traditionally used for its essential oil, which contains bioactive monoterpenes and sesquiterpenes. Research highlights its potential analgesic, anti-inflammatory, antimicrobial, and antioxidant properties largely based on preclinical and in vitro studies. Some novel alkaloids isolated from this plant exhibit anti-inflammatory activity. However, current evidence mainly stems from laboratory models and lacks robust human clinical trials.

What is Litsea Cubeba?

Litsea cubeba, also known as May Chang, is a species of woody aromatic plant belonging to the Lauraceae family. It is native to several regions in China where its fruit and essential oil have been traditionally utilized. The essential oil is extracted from the fresh fruits and leaves, containing a complex mixture of volatile compounds, particularly monoterpenes and sesquiterpenes, which contribute to its characteristic lemon-like scent.

Traditional Uses

Traditionally, Litsea cubeba essential oil has been used in folk medicine and aromatherapy. It is valued for purported soothing, antiseptic, and anti-inflammatory properties. The oil has also been incorporated in topical applications and used for its fragrant qualities in perfumery and flavoring.

Active Compounds

  • Monoterpenes (e.g., citral, limonene)
  • Sesquiterpenes
  • Isoquinoline alkaloids (novel compounds such as litcubanine A)

Potential Benefits with Evidence Levels

  • Analgesic effects (Animal studies): Systematic reviews indicate Litsea species, including L. cubeba, demonstrate antinociceptive (pain-relieving) properties in animal models via peripheral and central pathways involving inflammatory mediators. [Goh et al., 2024]
  • Anti-inflammatory effects (In vitro and animal studies): A novel isoquinoline alkaloid isolated from L. cubeba inhibited inflammatory macrophage activation in vitro by modulating NF-κB signaling and binding directly to iNOS, with corresponding anti-inflammatory effects seen in animal models. [Xia et al., 2021]
  • Antimicrobial properties (In vitro): The essential oil and its constituents have shown inhibitory activity against fungi such as Candida albicans and bacteria including Escherichia coli and Staphylococcus aureus. It also contributes to antimicrobial activity in soft denture liners and exhibits fungistatic effects against Fusarium species. [Kula et al., 2025; Krzyśko-Łupicka et al., 2020]
  • Potential anxiolytic effects (Preclinical, essential oils): Some studies on essential oils from the Litsea genus suggest possible anxiolytic-like effects, although direct evidence specifically for L. cubeba remains unconfirmed. [Caballero-Gallardo et al., 2025]
  • Antioxidant activity (In vitro): Preclinical studies have demonstrated antioxidant activities of L. cubeba essential oil, which may contribute to its overall health effects. [Yang et al., 2018]

Side Effects

No specific adverse effects or clinical toxicities related to Litsea cubeba have been documented in human clinical studies. Available preclinical data do not suggest significant toxicity at typical doses of essential oil components; however, detailed safety evaluations and systematic human data are lacking.

Drug Interactions

There is no clinical evidence available to characterize potential drug interactions with Litsea cubeba or its extracts.

Who Should Avoid Litsea Cubeba?

No established contraindications exist based on current clinical evidence. However, due to the absence of safety data in certain populations, individuals who are pregnant or breastfeeding should exercise caution and consult healthcare providers before use.

Evidence Limitations

The majority of evidence for Litsea cubeba’s effects comes from in vitro experiments and animal studies. There is a lack of human clinical trials to confirm efficacy, safety, appropriate dosing, and pharmacokinetics. Furthermore, variability in plant material, extraction methods, and essential oil composition limits direct extrapolation to clinical practice. More rigorous research, including controlled human studies, is required to better understand the therapeutic potential and safety profile.

References

Last Reviewed

April 2024

Disclaimer: This herbal profile is for informational purposes only and does not constitute medical advice. Litsea cubeba is not approved by regulatory authorities for the prevention, treatment, or cure of any disease. Users should consult qualified healthcare professionals before using herbs, especially if pregnant, breastfeeding, taking medications, or managing health conditions.