The FDA maintains a catalog of drug products commercially distributed in the U.S. Regardless of country of origin, entities that manufacture, repack or re-label drugs in the U.S. are required to register with the FDA, and are required to list drug products manufactured for commercial distribution in the U.S.
The agency has found tens of thousands of drug listings that haven’t been updated (they may no longer be marketed or they are marketed and their listings haven’t been updated). In order keep up-to-date records and make “accurate and timely decisions to protect public health,” they intend to deactivate out-of-date listings, according to a news release.