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ING-057Ingredient Research Profile

Adaptogens

Eleuthero (Siberian Ginseng)

Also known as: Eleutherococcus senticosus · Siberian ginseng · Acanthopanax senticosus

●●○Moderate Evidence

A true adaptogen with Soviet-era sports science evidence. Modestly improves endurance and immune function. Not related to Panax ginseng despite the common name.

Effective Dose

300–1200mg / day

per clinical evidence

Evidence Level

Moderate

Adaptogens

Mechanism

HPA axis modulation via eleutherosides, immune NK cell activation

primary action

Best For

Endurance

Immune support, Mental stamina, Stress

This profile is for informational purposes only and does not constitute medical advice. Consult a qualified healthcare professional before starting any supplementation, especially if you have pre-existing conditions or take medications.

What Is Eleuthero (Siberian Ginseng)?

Eleuthero was extensively researched by Soviet scientists during the Cold War as a performance and stress-resilience aid for athletes, cosmonauts, and miners. Eleutherosides (lignan glycosides) are the primary actives, distinct from Panax ginsenosides. It is among the most widely used adaptogens globally.

How It Works: The Science

Eleutherosides interact with oestrogen receptors and glucocorticoid receptor-mediated pathways, modulating cortisol secretion under chronic stress. They stimulate natural killer (NK) cell activity and interferon production, explaining immune-supportive effects. Some evidence suggests eleuthero increases erythrocyte flexibility, potentially improving oxygen delivery.

Primary Mechanism

HPA axis modulation via eleutherosides, immune NK cell activation

Evidence-Based Benefits

Improves endurance and reduces perceived exertion

moderate

Asano et al. (1986) — Soviet-era research showed improved endurance in trained athletes

Reduces illness frequency and severity

moderate

Winther et al. (1997) — significantly fewer sick days vs placebo over 6 months

Reduces mental fatigue under chronic stress

moderate

Kuo et al. (2009) — improvements in quality of life and stress markers

Dosage Guide

Effective Dose

300–1200mg / day

300–1200mg/day of standardised extract (≥0.8% eleutherosides). Commonly taken in 6–8 week cycles. Quality varies significantly between brands — choose standardised extracts.

Safety Profile & Side Effects

Very well tolerated with decades of use. May cause mild insomnia if taken late. Caution with immunosuppressant drugs (immune-stimulant activity may interfere).

Who Should (and Shouldn't) Take It

Best for

EnduranceImmune supportMental staminaStress

Who it's for

Endurance athletes, those with high physical or mental workloads, and anyone wanting immune support during high-volume training blocks.

Frequently Asked Questions

What is the recommended dose of Eleuthero (Siberian Ginseng)?

300–1200mg/day of standardised extract (≥0.8% eleutherosides). Commonly taken in 6–8 week cycles. Quality varies significantly between brands — choose standardised extracts.

Is Eleuthero (Siberian Ginseng) safe?

Very well tolerated with decades of use. May cause mild insomnia if taken late. Caution with immunosuppressant drugs (immune-stimulant activity may interfere).

How does Eleuthero (Siberian Ginseng) work?

Who should take Eleuthero (Siberian Ginseng)?

Endurance athletes, those with high physical or mental workloads, and anyone wanting immune support during high-volume training blocks.

Related Ingredients

Ashwagandha (KSM-66 / Sensoril)Rhodiola Rosea Panax Ginseng (Korean Ginseng)

Medical Disclaimer

Ingredient profiles are for informational purposes only and do not constitute medical advice. Consult a qualified healthcare professional before starting any supplementation, especially if you have pre-existing conditions or take medications. Full disclaimer →