Question 1

What exactly is a Form FDA 483 — and what is it not?

Accepted Answer

A Form FDA 483 is the list of "Inspectional Observations" an FDA investigator hands to a facility at the close of an inspection. Each item describes a condition the investigator believes may violate the FD&C Act or its regulations. It is not a final FDA decision, not a citation of a specific regulation, and not itself an enforcement penalty — it is the investigator’s observations, which the firm then responds to and the agency weighs when deciding a final classification or further action.

Question 2

How is a Form 483 different from an EIR and a Warning Letter?

Accepted Answer

The Form 483 is issued on-site and lists observations. The Establishment Inspection Report (EIR) is the FDA’s internal narrative of the whole inspection, completed afterward. A Warning Letter is a later, formal enforcement letter the FDA may issue when it concludes — after reviewing the inspection, the 483, and the firm’s response — that significant violations remain. So the sequence is typically: inspection and 483 → firm response and EIR → final classification → optional Warning Letter or other action.

Question 3

Where does this Form 483 database come from?

Accepted Answer

Every record is sourced from the FDA’s Office of Inspections and Investigations (OII) FOIA Electronic Reading Room, where the FDA publishes Form 483s it has released. We index them by firm, FDA Establishment Identifier (FEI), establishment type, country, and issue date, and roll them up into firm-level history. Each record links back to its FDA source, and the live counts in the header reflect the most recent sync.

Question 4

How should a company respond to a Form 483?

Accepted Answer

The FDA expects a written response, and responding within 15 business days of the inspection close-out means your corrective actions are considered before the agency decides on any further action. A strong response acknowledges each observation, states the corrective and preventive actions (CAPA) with owners and timelines, and provides evidence of completion where possible. Responding promptly and substantively is one of the most influential factors in whether a 483 escalates.

Question 5

Why might a particular Form 483 not appear here?

Accepted Answer

The database reflects the Form 483s the FDA has published in the FOIA reading room, which is not every 483 ever issued. Some are withheld or delayed, and published records may contain FDA redactions. The dataset covers published final-action material and is not a comprehensive log of all FDA inspections, so a recent or unpublished 483 may not yet be reflected.

Question 6

How can I use this to monitor a supplier or CDMO?

Accepted Answer

Search by the firm name or FEI number to open a firm profile showing its full published-483 history, establishment type, and locations, including alternate names the site has operated under. Watch for the frequency and recency of 483s and any recurring observation themes across inspections — repeated or recent findings are a stronger due-diligence signal than a single older one. Pair it with the firm’s own quality and CAPA record for a complete picture.

FDA 483 Database

Get alerted the moment your firm — or a competitor — gets a 483.

Browse FDA Form 483s by year and month

FDA Form 483 FAQ

FDA 483 Database

Get alerted the moment your firm — or a competitor — gets a 483.