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Mood/Performance/Cognition

Rhodiola rosea

Adaptogenic root extract that may reduce stress-related fatigue and support focus in adults under sustained mental strain.

Rhodiola rosea
45
score
C
evidence
Caution
risk

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Use with caution

This supplement may interact with medications, medical conditions or sensitive populations. Review safety before use.

Quick Take

Worth trying for stress-related fatigue and brain fog; evidence is promising but still small and mixed.

Rhodiola rosea is a cold-climate herb whose root is used as an extract; it grows in high-altitude regions of Europe and Asia and is not a meaningful food source. Its main compounds, especially rosavins and salidroside, appear to influence the body’s stress-response system and brain signaling linked to fatigue and attention. Best-supported uses are reducing stress-related fatigue, modestly improving focus under strain, and possibly easing mild low mood. It tends to help most in adults under sustained mental or work stress.

Potential benefits

01
Reduces stress-related fatigue
02
May reduce stress and burnout
03
May improve attention under stress
04
May ease mild depressive symptoms
05
May improve exercise endurance
06
May lower stress reactivity

Protocol

Amount
200-400 mg
Frequency
Once daily, or split into 2 doses
When
Morning or early afternoon, ideally 30 minutes before food if tolerated; avoid near bedtime if it feels stimulating.

Onset Time

Some alertness effects same day; 1-2 weeks for stress/fatigue

Who Should Consider

Adults with stress-related mental fatigue
People under heavy work or caregiving stress
Those who feel mentally foggy under pressure
People wanting something less stimulating than relying

How It Works

Rhodiola appears to modulate the hypothalamic-pituitary-adrenal stress response and affect monoamine signaling in the brain. In practical terms, it may reduce the sense of mental fatigue and help preserve attention when people are under sustained stress.

Updated 5/19/2026

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