The register

Pharmaceutical
companies

Every company holding an FDA drug establishment registration or drug listing. 101 in this view, ordered by manufacturing footprint.
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Provenance

About one in five FDA drug establishment registrants is a medical gas supplier, medicated animal feed mill or home medical equipment provider rather than a pharmaceutical manufacturer. Oxygen is a regulated drug, so a single welding gas distributor can hold several hundred registrations. Those are kept in the database but filtered out of the default view, so the ranking reflects the industry people mean. Use the segment control above to see them.