Herb World News Online

Herb Research Foundation


 Top News  |  World  |  Science  |  Research Reviews  |  Politics  |  Industry  |  Features
 Science News

Rhodiola reported to reduce stress-related fatigue

In a placebo-controlled, double-blind, crossover trial, low-dose treatment with a standardized extract of Rhodiola rosea reduced symptoms of fatigue in 56 young, healthy male and female physicians on night duty. Results were measured via a fatigue index that took into account various aspects of total mental performance, including associative thinking, short-term memory, calculation and ability of concentration, and speed of audio-visual perception. Although significant effects were seen during only one two-week study phase (a change in performance of 20%), the investigators concluded that the extract "possesses a clear anti-fatigue effect without any reported adverse reactions or side-effects, at the dosage used in our study in a situation of moderate level of fatigue and stress." According to the authors, theirs is one of the first Rhodiola anti-fatigue studies to investigate the effects of repeated low daily doses of the herb over time in a "nearly realistic work situation." Dosage used in the verum groups during each two-week study phase was one 170 mg Rhodiola tablet daily. Each tablet was reported to contain approximately 4.5 mg salidroside. Darbinyan V, Kteyan A, Panossian A. Rhodiola rosea in stress induced fatigue-a double blind cross-over study of a standardized extract SHR-5 with a repeated low-dose regimen on the mental performance of healthy physicians during night duty. Phytomedicine 2000; 7(5): 365-371.

 Top News  |  World  |  Science  |  Research Reviews  |  Politics  |  Industry  |  Features

Back to the Herb World News Online Front Page

Visit the Herb World News Archives

© 2003 by Herb Research Foundation, Boulder, CO, USA.

Main Page