Millions of Americans spend billions of dollars annually on dietary supplements - herbal remedies, vitamins, minerals - to treat a multitude of ailments.
But most don't know under current law, there's no guarantee that what's on the label is what's in the bottle or what's in the bottle is safe and effective.
To read more, check out these interviews with NCCAM director Stephen Straus, Tom Delbanco of Harvard Medical School, Marcia Angell and David Eisenberg, they discuss the controversy over regulating dietary supplements.
They also talk about the challenges for doctors and patients in the face of the lack of reliable information.
P.S. To learn more, check out this educational guide, "How Safe Are Your Vitamins?"