Evidence supporting the use of: Rhodiola sacra
For the health condition: Concentration (poor)

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Rhodiola sacra, closely related to Rhodiola rosea, has a history of use in traditional Tibetan and Chinese medicine for enhancing stamina and resistance to stress. Scientific research on Rhodiola rosea (the more commonly studied species) suggests potential cognitive benefits, including improved concentration and reduced fatigue, likely due to its adaptogenic properties. A limited number of clinical trials and animal studies have investigated Rhodiola's effect on cognitive function. Some small human studies have demonstrated modest improvements in attention, mental performance, and fatigue during periods of stress or mental exertion, although these studies often use mixed Rhodiola extracts and sometimes do not specify the species.

There is a lack of high-quality, large-scale clinical trials specifically evaluating Rhodiola sacra for poor concentration. Most scientific evidence is extrapolated from studies on Rhodiola rosea, and the active constituents (such as salidroside and rosavin) are present in both species. While the adaptogenic effects may help alleviate cognitive fatigue and support mental clarity under stress, current scientific validation is limited, and the overall quality of evidence is moderate to low. Therefore, while there is some scientific rationale and preliminary support, more rigorous research is needed to establish efficacy specifically for Rhodiola sacra in improving concentration.

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