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Eleutherococcus senticosus (Siberian Ginseng)
Adaptogen that supports endurance, stress resilience, and immune function — distinct from true ginseng.
What the evidence says
Most Eleuthero studies are mechanism or observational rather than RCTs that measure a clinical effect — keep findings provisional.
Most evidence is from high-quality randomised trials published 1986–2022 with a typical study size of 96 participants.
Based on 15 studies · 5 RCTs · 1,261 total participants
Confidence
HighWhat the studies found
By outcome
Eleuthero has an evidence score of 7/10 — strong evidence based on 15 indexed studies. Adaptogen that supports endurance, stress resilience, and immune function — distinct from true ginseng.
The commonly studied dose of Eleuthero is 300-1200mg extract (standardized to 0.8% eleutherosides). Research points to an estimated optimal dose around 1200mg, with a minimum effective dose near 600mg. Individual response varies — start low and adjust.
The best time to take Eleuthero is in the morning. Taking it with food is preferred. Eleuthero (Eleutherococcus senticosus), formerly known as Siberian ginseng, is a mildly stimulating adaptogen containing eleutherosides that support stress resilience and sustained energy.
Last reviewed May 2026 · evidence from 22 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Eleuthero, formerly called Siberian Ginseng, is a hardy adaptogen used extensively in Russia for performance, stress, and immune support. Unlike Panax ginseng, it doesn't contain ginsenosides but has its own active compounds (eleutherosides). Research supports benefits for endurance, fatigue reduction, and immune function. Gentler and less stimulating than Panax ginseng.
Modulates stress response and improves resilience
Supports healthy immune function
How Eleuthero works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
300-1200mg extract (standardized to 0.8% eleutherosides)
Take with food
| Form | Type |
|---|---|
| 💊Standardized root extract | Recommended |
| 💊Dried root | Alternative |
| 💧Tincture | Alternative |
Look for standardization to eleutherosides. Root is the traditional part used.
Minimum: 4 weeks
Optimal: 12 weeks
Cycling: 6-8 weeks on, 2 weeks off. Russian practice was continuous for months.
Note: Take earlier in the day. Can be mildly stimulating.
Based on limited controlled trials with mixed results. Systematic review noted methodological limitations in existing studies. Effects may be modest and individual response varies significantly.
Less mental and physical fatigue
Improved physical endurance
Insufficient data; avoid
May interfere with digoxin assays
Theoretical interaction
Tip: Take earlier in day; reduce dose
Eleuthero is generally well-tolerated and considered safe for most healthy adults at recommended doses. The most commonly reported side effects are insomnia. Use caution if any of these apply to you: Known allergy or hypersensitivity to Eleuthero or related compounds; Autoimmune conditions; Uncontrolled hypertension.
Panax Ginseng
Likely helpsGinsenosides combat fatigue, sharpen cognitive function, and enhance stress resilience — distinct from American and Siberian ginseng.
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