BACKGROUND: Siberian Ginseng (Eleutherococcus senticosus), an antioxidant-rich herb, is reputed to help people adapt to stress and reduce fatigue.
RESEARCH: Researchers treated 76 men and women, most of whom were middle-aged, with moderate to severe fatigue of unknown cause. The subjects received either 2,000 mg of standardized Siberian ginseng or placebos daily for two months, after which all subjects received 2,000 mg of the herb. Researchers used the four-question Rand Vitality Index, a standard assessment tool, to evaluate the level of fatigue.
RESULTS: People with less severe fatigue, but not severe fatigue, improved significantly after taking Siberian ginseng supplements for two months.
IMPLICATIONS: Siberian ginseng supplements appeared to benefit subjects with moderate fatigue, and the researchers recommended that further studies be conducted with such subjects.
Hartz AJ, Bentler S, Noyes R, et al. Randomized controlled trial of Siberian ginseng for chronic fatigue. Psychological Medicine, 2004;34:51-61.
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