Rhodiola Rosea
Rhodiola rosea
Also known as: Golden Root, Arctic Root, Rose Root
Overview
A cold-climate adaptogen studied in several small, short human trials for mental fatigue and stress-related tiredness; results are mixed and the trials are methodologically limited, and evidence that it affects cortisol is thin and inconsistent.
Proposed mechanism
In laboratory (test-tube) studies, Rhodiola rosea root extracts inhibit monoamine oxidase (MAO-A and MAO-B). That effect was traced mainly to a compound called rosiridin — not to rosavin or salidroside, the two markers used to standardize commercial extracts — and it has not been shown in animals or in people. It remains a proposed, unconfirmed explanation for how Rhodiola might support serotonin and dopamine activity. Major reviews of Rhodiola's pharmacology instead point to effects on the stress-hormone (cortisol/HPA) system and on heat-shock proteins such as HSP70, though the heat-shock findings are preclinical and run in both directions depending on the model. In people, Rhodiola has been studied mostly for fatigue and mental performance; systematic reviews describe those results as contradictory, rate the trials as high or unclear risk of bias, and note that the positive studies have not been independently replicated.
Mechanisms describe how researchers think a compound may act, often from laboratory work — a proposed mechanism is not proof of a clinical effect in people.
Traditional & studied uses
Related pathways
Pathway tags are a research aid for browsing the glossary — they are not a claim that this ingredient treats any condition.