Twelve supplements you should avoid

Last reviewed: September 2010

These supplement ingredients are among those linked by clinical research or case reports to serious side effects. We worked with the Natural Medicines Comprehensive Database, an independent research group that evaluates the safety and effectiveness of nutritional supplements, to develop this list. We think it's wise to avoid all the ingredients on it. Unless otherwise noted, there's insufficient evidence to rate their effectiveness for their purported uses. Dangers listed are not meant to be all-inclusive.

Twelve supplements you should avoid
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