Evidence supporting the use of: Rhodola crenulata
For the health condition: Concentration (poor)

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Synopsis

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

Rhodiola crenulata is a species of Rhodiola used in traditional Chinese and Tibetan medicine for enhancing stamina and reducing fatigue. Its potential to support concentration or cognitive function has been primarily investigated with its close relative, Rhodiola rosea; both species contain similar active compounds, such as salidroside and rosavin. Clinical studies on Rhodiola rosea have shown modest improvements in mental performance, attention, and fatigue in situations of stress or fatigue, with several randomized controlled trials supporting these effects. However, specific evidence for Rhodiola crenulata is limited and mostly consists of animal studies and a few small human trials suggesting possible improvement in cognitive performance, attention, and reduction of mental fatigue. The proposed mechanisms include modulation of neurotransmitters, reduction of oxidative stress, and support for mitochondrial function. Overall, while there is some scientific basis—mainly extrapolated from related species and small studies—the direct evidence for Rhodiola crenulata specifically supporting concentration in humans is weak and preliminary. Larger, well-designed clinical trials are needed to confirm its efficacy for this purpose.

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