As a precautionary measure, Perrigo Company plc announced today that it has initiated a voluntary, worldwide product recall to the retail customer level of ranitidine (all pack sizes). The recall is being taken due to possible presence of a nitrosamine impurity called N-nitrosodimethylamine (NDMA).

http://www.fda.gov/safety/recalls-market-withdrawals-safety-alerts/perrigo-company-plc-issues-voluntary-worldwide-recall-ranitidine-due-possible-presence-impurity-n