Rhodiola Rosea for Reaction Time Improvement
Rhodiola may reduce fatigue-related slowing but the trials are small and inconsistent.
Overview
Verdict
How It Works
Dosing & Protocol
Typical dose
- Recommended dose
- 200-400mg/day standardised extract
- Expected timeframe
- Acute to 4 weeks
Protocol
- form
- Rhodiola rosea root extract standardised to 3% rosavins and 1% salidroside
- duration
- Single doses to 4 weeks in the relevant trials
- co factor
- Evidence is insufficient. A few trials have included psychomotor speed measures within broader cognitive batteries. Darbinyan reported improved performance on a fatigue index incorporating speed-based tasks in night-duty physicians at 170 mg/day, and Shevtsov reported improved mental work capacity in cadets. Neither used reaction time as a primary endpoint, and effects were seen under fatigue rather than in rested participants. Trials in non-fatigued adults have not shown improvements in reaction time, and no study has examined driving, sport-specific reaction or occupational safety outcomes.
- titration
- Not applicable - no dose-response for reaction time has been established
- starting dose
- Not established. Trials measuring cognitive speed used 170-600 mg/day of standardised extract
Evidence
What the studies say
No studies are yet linked to both Rhodiola Rosea and Reaction Time Improvement.
Safety
Caveats
Can be stimulating; avoid late in the day.
Less likely to help if
Medical Disclaimer
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Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.