Supplements and Safety

An investigation into the hidden dangers of vitamins and supplements, a multibillion-dollar industry with limited FDA oversight. On Tues., Jan. 19, FRONTLINE, The New York Times and the Canadian Broadcasting Corporation examine the marketing and regulating of supplements, and cases of contamination and serious health problems.

Fish oil is the third most widely used supplement in the United States. But there can be a big difference when it comes to prescription-quality fish oil and the kind found in over-the-counter supplements.