Quick summary
Buckthorn (Rhamnus cathartica) is a plant species traditionally used in ethnomedicine and veterinary medicine. It also serves as an alternative host for pathogens affecting oat crops and has ecological significance as an invasive species. Currently, clinical evidence supporting its therapeutic benefits and safety in humans is insufficient, and ongoing research is needed.
What is it
Buckthorn (Rhamnus cathartica) is a deciduous shrub or small tree native to Europe and parts of Asia. It is recognizable by its dark berries and thorny branches. Buckthorn has gained attention not only for its traditional uses but also for its impact as an invasive species in various regions, affecting local ecosystems and agriculture.
Traditional uses
Traditionally, buckthorn has been used in ethnoveterinary practices, particularly in Switzerland, where it has been applied to address gastrointestinal and skin diseases in livestock. It has also been employed in ethnomedicine, although detailed traditional human medicinal uses are less well documented.
Active compounds
The specific active compounds in buckthorn are not comprehensively characterized in current literature. Related species and extracts may contain anthraquinones and other phytochemicals, but precise constituent profiles for Rhamnus cathartica require further investigation.
Potential benefits with evidence levels
- Potential ethnoveterinary applications in gastrointestinal and skin diseases in livestock: Limited evidence based primarily on ethnoveterinary knowledge surveys and traditional use in Switzerland. No controlled clinical trials in animals or humans are available to confirm efficacy.
Side effects
Clinical evidence detailing adverse effects of buckthorn in humans is lacking. Animal studies have reported potential hepatocellular toxicity in mice. Additionally, contact with spiny larvae of pests commonly found on buckthorn (such as caterpillars of Monema flavescens) may cause skin irritation or urtication. Due to limited data, side effects in humans remain poorly defined.
Drug interactions
There are no clinical data documenting drug interactions involving buckthorn (Rhamnus cathartica).
Who should avoid it
Given the limited safety information, individuals with hepatic impairment or allergic tendencies should exercise caution. Use during pregnancy and breastfeeding is not supported by clinical studies and is generally not recommended until more safety data become available.
Evidence limitations
- No randomized controlled trials or systematic reviews have specifically evaluated buckthorn’s therapeutic effects in humans.
- Most knowledge comes from ethnoveterinary reports, in vitro or animal studies, and ecological or pest management research.
- Toxicity data are primarily from animal models without translational human clinical evidence.
- There is a lack of data on pharmacokinetics, optimal dosage, and detailed human safety profiles.
- Ecological and agricultural studies do not inform clinical or medicinal use.
References
- Namboodiri AP, Ahmed SAA, Karanis P. Phytoextracts Used in the Treatment of Cryptosporidiosis and Giardiasis: Current State. Europe PMC. 2026.
- Mertenat D, Cero MD, Vogl CR, Ivemeyer S, Meier B, Maeschli A, Hamburger M, Walkenhorst M. Ethnoveterinary knowledge of farmers in bilingual regions of Switzerland – is there potential to extend veterinary options to reduce antimicrobial use? Journal of Ethnopharmacology. 2020.
- Greenleaf J, Holásková I, Rowen E, Gutensohn M, Turcotte R, Park YL. Arthropods Associated with Invasive Frangula alnus (Rosales: Rhamnaceae): Implications for Invasive Plant and Insect Management. Europe PMC. 2023.
- Nazareno ES, Li F, Smith M, Park RF, Kianian SF, Figueroa M. Puccinia coronata f. sp. avenae: a threat to global oat production. Europe PMC. 2018.
- Rhamnus cathartica (Buckthorn) Hepatocellular Toxicity in Mice. Toxicologic Pathology. 1997.
Last reviewed
June 2024
Disclaimer: This page is for informational purposes only and does not constitute medical advice. The information provided is based on currently available research and may change as new evidence emerges. Always consult a qualified healthcare professional before using herbal products, especially if you have underlying health conditions or are taking medications.