Pfizer's blood pressure med recall creeps into US as testing flags carcinogen threat

After high levels of potential carcinogens forced Pfizer to pull multiple products in Canada, the company's recall saga has reached the U.S.

Pfizer is recalling five lots of Accupril tablets, also known as quinapril HCL, after testing flagged levels of a nitrosamine—N nitroso-quinapril—above acceptable daily limits.