TIMELINE-Popular heartburn medicine Zantac pulled off store shelves

The U.S. Food and Drug Administration and international health authorities are investigating the safety of Zantac heartburn medicine, also sold generically as ranitidine, after finding a probable cancer-causing impurity https://www.reuters.com/article/us-fda-heartburn/fda-says-finds-unacceptable-level-of-carcinogen-in-zantac-and-its-generics-idUSKBN1WH1LA in the drug.