William Obermeyer prepares supplement pills

By Rob Carr/The Associated Press

June 10, 2009 | 12:01 a.m. CDT

William Obermeyer of ConsumerLab.com prepares supplement pills to be sent to labs for testing in Pasadena, Md, on April 21. One quarter of supplements tested by the company over the last decade have had some sort of problem, including contents that don't match the label and unsafe amounts.

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