Sector: Health Care Supplies

A warning letter written by the Food & Drug Administration last week to ten companies that produce pre-workout supplements with the ingredient dimethylamyamine (DMAA) has sent shockwaves through the industry, not only to the producers of the products but to consumers who have taken them.

The vitamin supplements industry is "one of the safest industries that exist," despite lack of Food and Drug Administration oversight of its products, GNC CEO Joseph Fortunato told CNBC Tuesday.

Counterfeit versions of Roche's multibillion-dollar cancer drug Avastin have been distributed in the U.S, the Swiss drugmaker said on Tuesday.