Herbal supplements have been touted as natural remedies for everything from boosting memory to curing cancer. But don't assume "natural" or "used for hundreds of years" means safe or effective. The fact is, herbal supplements are not tested or authorized by the FDA. Some heavily promoted herbal remedies have been shown to be ineffective or potentially dangerous-even fatal.
Here are a few notable examples.
1. Ephedra, which is supposed to curb appetite and boost metabolism, is perhaps the biggest offender. Also known as ma huang or herbal ecstasy, it may cause heart attacks, strokes, seizures, and even sudden death. Beware of diet aids containing ephedra.
2. Comfrey, a plant used for a wide range of ailments, including respiratory illness, anemia, arthritis, and fractures, is believed to cause liver damage. The FDA advised manufacturers to pull it from shelves in July 2002.
3. Kava, promoted for relaxation, sleeplessness, menopausal symptoms, has been linked with severe liver injury.
4. Recent research concluded that Ginkgo biloba had no effect on memory, learning, attention, concentration, or verbal fluency in older people not suffering from dementia.
The bottom line: Don't take herbals at face value. If you take any supplements, tell your doctor. Your health and safety may be at risk.
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