FDA regulatory guides
These evergreen guides explain U.S. FDA drug regulatory data in plain, administrative terms: how recall classifications and statuses work, how drug-shortage records are structured, what openFDA is, and how to read and verify the official source. They are a reference layer that links into the live record index on this site.
- What Does an FDA Class II Recall Mean?
A plain, regulatory explanation of what a Class II FDA drug recall is, how the classification is assigned, and how to verify a Class II record against the official FDA source.
- FDA Drug Recall Classifications: Class I, Class II and Class III
How the FDA classifies drug recalls into Class I, Class II and Class III, what each administrative tier means, and how to browse and verify records by classification.
- How to Search FDA Drug Recalls by NDC
What the National Drug Code (NDC) is, how it relates to FDA recall data, and how to locate and verify recall records associated with a product identifier.
- FDA Enforcement Reports Explained
What FDA enforcement reports are, which fields they contain, how openFDA exposes them, and how to read and verify a recall enforcement record.
- Drug Recall vs. Market Withdrawal vs. Safety Alert
The regulatory differences between a drug recall, a market withdrawal and a safety alert, and why the distinction matters when reading public FDA data.
- What Does an "Ongoing" FDA Recall Status Mean?
The meaning of the "Ongoing" recall status in FDA enforcement data, how recall statuses change, and how to confirm the live value at the official source.
- What Does a "Terminated" FDA Recall Status Mean?
The meaning of the "Terminated" recall status in FDA enforcement data and how to interpret a concluded recall record in administrative terms.