Adaptogen
Rhodiola Rosea
A well-researched adaptogenic herb that supports stress resilience, energy, and mental performance.
KÖGN Health grades Rhodiola Rosea as A (Strong evidence) and rates it 4.4 out of 5.
Last reviewed · June 2026
Primary effects
- Reduced fatigue
- Improved focus
- Stress resilience
How it works
Modulates stress response systems, improving fatigue resistance and cognitive performance.
Overview
Rhodiola Rosea is one of the most effective adaptogens for acute stress and fatigue management. It is commonly used to improve mental performance during periods of high cognitive demand. Its effects can be felt relatively quickly compared to many herbal compounds, making it suitable for both daily use and situational performance support.
The evidence
Reasonable evidence for reduced fatigue and improved performance under stress or sleep deprivation. Evidence in well-rested, low-stress individuals is weaker.
Dose
200–600 mg/day of an extract standardised to ~3% rosavins and ~1% salidroside.
Timing
Both — acute anti-fatigue effects are reported, with benefits also over weeks. Taken earlier in the day.
Safety
Generally well tolerated; can feel mildly activating, so late-day dosing may affect sleep in some.
Works well with
Related ingredients
Graded entries that target the same cognitive goals.
Categories
Educational information, not medical advice. The evidence grade is KÖGN’s editorial assessment of published research, not a health claim. Speak to a qualified clinician before changing what you take.