Ingredient guide
Rhodiola rosea is an adaptogenic herb used for fatigue and stress. Several small trials suggest it reduces perceived fatigue under stress or heavy workload. The evidence is limited but reasonably consistent for that use.
Limited evidenceRhodiola rosea is a hardy plant that grows in cold, mountainous regions. Its root is used as a supplement and is classed as an adaptogen, a loose term for plants thought to help the body cope with stress. Extracts are usually standardised to active compounds called rosavins and salidroside.
Rhodiola appears to influence stress-signalling pathways and chemical messengers tied to mood and alertness. The adaptogen idea is that it nudges an over-taxed system back toward balance rather than simply stimulating it. The mechanism in people is still being mapped, but the direction of research has been fairly consistent.
The most consistent finding is reduced fatigue under pressure. Trials in shift workers, students, and people with prolonged fatigue report that rhodiola lowers the sense of tiredness and supports mental performance when the body is taxed. One study of people with chronic fatigue symptoms saw improvements within the first week at 400 mg per day.
The limits are familiar. The trials are small, often short, and varied in their extracts and outcomes. We grade the evidence as limited but encouraging for fatigue. Rhodiola is low risk at sensible doses, which makes a trial reasonable for stress-related tiredness even where the data is not yet strong.
Common doses run from 200 mg to 400 mg of standardised extract per day, taken earlier in the day because it can be mildly stimulating. Look for a clear standardisation on the label. If you take mood or blood pressure medication, check with your healthcare provider before regular use.
Daily use for fatigue has been studied at doses as low as 50 mg, with common ranges around 200 mg to 400 mg of standardised extract. Acute use sits around 288 mg to 680 mg, and higher amounts may be no more effective. Ask your healthcare provider before regular use if you take medication.
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It is a loose term for plants thought to help the body cope with stress and return toward balance. Rhodiola is one of the more studied examples.
Common doses are 200 to 400 mg of standardised extract per day. Higher amounts may be no more effective, and it is best taken earlier in the day.
Earlier in the day, since it can be mildly stimulating and may affect sleep if taken too late.