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Fatigue that is related to cancer and its treatment is notoriously difficult to manage. Ginseng root has a grass-roots reputation for efficacy in “balancing” body energy, and in vitro and animal data — supported by pilot studies in humans — have suggested that it might be useful for cancer-related fatigue. Mayo Clinic researchers conducted a multicenter, double-blind, placebo-controlled trial that involved 341 patients who received cancer diagnoses within 2 years of study entry and who complained of moderate fatigue as assessed by a standard scale. Powdered American ginseng root, prepared from a single production lot and standardized for quality and potency, was administered as two 500-mg capsules taken twice daily.
After 4 weeks, ginseng pa…