Quick Summary

Eleuthero, also known as Siberian ginseng, is a plant adaptogen traditionally used to enhance stress resilience and physical endurance. Scientific evidence from randomized controlled trials and systematic reviews suggests potential benefits as an adaptogen affecting neuroendocrine and immune systems, with some preliminary clinical support in conditions such as mild COVID-19, fatigue, depression, and cognitive function. However, clinical evidence is limited by low to moderate certainty, small sample sizes, and variable study quality, and further high-quality research is needed.

What is it?

Eleuthero (Eleutherococcus senticosus) is a shrub native to Northeast Asia. It is classified as an adaptogen—a natural substance believed to help the body adapt to stress and exert a normalizing effect on bodily processes. Often referred to as Siberian ginseng, Eleuthero is distinct from Panax ginseng but valued for similar uses in traditional herbal medicine.

Traditional Uses

  • Enhancing physical endurance and stamina
  • Supporting resilience to stress
  • Improving general vitality and immune function

Active Compounds

Eleuthero contains a variety of bioactive compounds including eleutherosides, phenylpropanoids, lignans, polysaccharides, flavonoids, and saponins. These constituents are thought to contribute to its adaptogenic, immunomodulatory, and neuroprotective activities.

Potential Benefits with Evidence Levels

  • Adjunct treatment for mild COVID-19: Low to moderate certainty evidence from a randomized, quadruple-blind, placebo-controlled trial of Kan Jang®, a combination including Eleuthero, showed reduced progression to severe COVID-19 and faster resolution of respiratory symptoms compared to placebo (PMID: 37765004, 41953555).
  • Fatigue reduction and improved physical performance in long COVID and chronic fatigue: Low to moderate certainty evidence from randomized controlled trials suggests Eleuthero-containing adaptogenic preparations may reduce fatigue and improve physical activity and exercise performance (PMID: 35337143, 34445021).
  • Potential improvement in cognitive function and neuroprotection: Preliminary clinical and preclinical evidence indicates that Eleuthero and related adaptogens modulate neuroendocrine-immune pathways and may have neuroprotective effects. However, clinical data are limited and mechanisms are still under study (PMID: 41901106, 36987052).
  • Adjunctive therapy for depression and psychiatric symptoms: Very low to low certainty evidence from systematic reviews suggests possible benefits of Eleuthero-based herbal formulations as adjuncts for depression in schizophrenia spectrum disorders and epilepsy, but evidence is limited and of low quality (41953555, 38287355, 37521479).
  • Immune function enhancement as adjunct in cancer chemotherapy: Low to moderate certainty data from studies of multi-herbal injections containing Eleuthero (e.g., Aidi injection) indicate potential improvement in immune parameters and quality of life in patients undergoing chemotherapy for lung and gastric cancer. More rigorous research is needed (PMID: 34541998, 38230219).

Side Effects

  • Mild gastrointestinal discomfort has been reported in some clinical trials
  • Possible allergic skin reactions have been suggested based on general adaptogen literature
  • No serious adverse effects have been specifically attributed to Eleuthero in available human trials

Drug Interactions

  • Possible interactions with antidepressants and other psychotropic medications, though clinical data are limited
  • Lack of comprehensive data to definitively identify drug interactions; caution is advised when combined with other central nervous system (CNS) active drugs

Who Should Avoid It

  • Due to insufficient data, pregnant and breastfeeding individuals are advised to avoid use unless supervised by a healthcare provider
  • Individuals with specific health conditions should consult a healthcare professional before use as no well-defined contraindications have been established

Evidence Limitations

  • Most clinical trials involved small sample sizes and short durations
  • Quality of clinical evidence ranges from very low to moderate certainty
  • Considerable heterogeneity exists in herbal preparations, doses, and study designs
  • Lack of large-scale, high-quality randomized controlled trials specifically on Eleuthero
  • Limited data regarding long-term safety and efficacy
  • Unclear standardization and composition in many clinical studies involving Eleuthero
  • Attribution of effects specifically to Eleuthero is complicated by its inclusion in multi-ingredient formulations

References

Last Reviewed

June 2024

Disclaimer: This information is provided for educational purposes only and is not intended as medical advice. Consult a healthcare professional before using Eleuthero or any other herbal supplement, especially if you are pregnant, breastfeeding, taking medications, or have underlying health conditions.