American ginseng: Can it relieve cancer fatigue?

Can American ginseng relieve fatigue in people with cancer?

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Mayo Clinic oncologist Timothy Moynihan, M.D., and colleagues answer select questions from readers.

Answer

Fatigue is common among people with cancer — before, during and after treatment. A 2007 pilot study at Mayo Clinic suggested that American ginseng may be an effective treatment for cancer-related fatigue.

For the study, the researchers followed 282 people with cancer for eight weeks. Some participants received 750 milligrams (mg) of American ginseng a day, some received 1,000 mg, some received 2,000 mg and some received an inactive substance (placebo). At the end of the study, the people who received the larger doses of ginseng had more energy. They also reported better mental, physical, spiritual and emotional well-being. Those who received the low dose or placebo had little or no improvement.

Although the results of this study are encouraging, researchers caution that the results are only preliminary. A larger trial is planned in 2008 to see if these results can be confirmed.

Also, keep in mind that herbal supplements are subject to only limited regulation. Before taking any herbal supplement, research the company and the product. And always check with your doctor first.

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