Compound or practice · Supplement
Rhodiola Rosea
A stimulating adaptogen with the best fatigue evidence among the herbal 'stress' supplements — daytime energy without ashwagandha's flatness.
- Overall grade
- Grade B
- Last revised
- 3
- graded outcomes
- 0
- references listed
A structured monograph in Prometheus's bundled library. Its grades are the monograph's own reading of the evidence, not a peer-reviewed review.
2 at grade B · 2 at grade C — 4 graded rows
What is known
Each outcome with its grade (how strong the evidence is, A to D), the size of the effect where the entry records one, and how often studies agree.
- Fatigue / burnoutEvidence grade B
Best-supported use
Moderatemixed
- Stress symptomsEvidence grade B
Subjective improvement
Smallmixed
- Cognition under fatigueEvidence grade C
Small
Smallmixed
Conditions
How the entry reads its effect on diagnosed conditions: the direction first, then the grade. Never a substitute for the person who treats you.
- Burnout / chronic fatigue May improveEvidence grade CPromising but limitedGrade C
What is uncertain
Read off the same rows as above. Nothing here is added that the entry does not itself record.
- Thin evidence: Cognition under fatigue (grade C).
- Studies disagree: Fatigue / burnout (mixed agreement); Stress symptoms (mixed agreement).
- Caution with Caffeine: Both activating — stack low-dose or trade calm focus for edge.
- Watch with Caffeine: Both activating — stack low-dose or trade calm focus for edge.
Interactions
Documented pairings with supplements and medicines. A medicine on this list is a conversation for whoever prescribes it.
CaffeineCaution
Both activating — stack low-dose or trade calm focus for edge.
The evidence in words
What it is
Rhodiola is an arctic adaptogen standardized to rosavins and salidroside. Unlike sedating adaptogens, it leans activating, which suits daytime fatigue and burnout better than sleep.
How it works
It appears to modulate the stress response and monoamine signaling and to support cellular energy metabolism, buffering the performance drop that mental and physical fatigue cause.
What the evidence shows
The strongest signal is for fatigue and stress-related exhaustion — several trials show reduced fatigue and improved subjective wellbeing under stress, with a decent burnout study. Cognitive and mood effects are smaller and mixed. It is one of the more defensible adaptogens, taken in the morning.
How to use it
200–400 mg of a standardized extract (3% rosavins / 1% salidroside) in the morning; it can be over-stimulating late in the day.
Safety & interactions
Well tolerated; occasional jitteriness or vivid dreams. Its activating nature stacks with other stimulants. Caffeine — Both activating — stack low-dose or trade calm focus for edge.
Bottom line
The daytime, anti-fatigue adaptogen. 200–400 mg standardized in the morning for stress-driven tiredness and burnout; keep it away from bedtime.
How it is used
As the entry records it, from the studies it summarises. Not a recommendation for you — doses that suit a trial population may not suit you.
- Morning
- 200–400 mg standardized extract.
Related reading
Entries that share this one's tags or conditions.
- Rhodiola Rosea for Burnout / chronic fatigueEvidence grade C — Promising but limitedEvidence grade C
- Rhodiola Rosea for Cognition under fatigueEvidence grade C — SmallEvidence grade C
- Rhodiola Rosea for Fatigue / burnoutEvidence grade B — Best-supported useEvidence grade B
- Rhodiola Rosea for Stress symptomsEvidence grade B — Subjective improvementEvidence grade B
Sources
This entry lists no references of its own.
Last revised . A grade is this entry's reading of the evidence, not medical advice.