FDA recalls blood pressure medicine tainted with cancer-causing chemical

The U.S. Food and Drug Administration says drug makers have recalled more than a half-million bottles of the blood pressure medication prazosin hydrochloride over concerns it may include a cancer-causing chemical. New Jersey-based Teva Pharmaceuticals USA issued a voluntary recall earlier this month for some lots of the capsules it sells. Doctors prescribe prazosin, which relaxes blood vessels, to help lower blood pressure. It also is sometimes prescribed for post-traumatic stress disorder. The FDA has given the drug a Class II risk classification because some of the recalled medication may have nitrosamine impurities that are considered potentially cancer causing.