# Every FDA Warning Letter, Tracked by KeyPedia

Source: https://www.keypedia.com/media/continuous-data-source-fda-warning-letters
Type: blog
Published: July 29, 2026
Updated: August 6, 2026
Authors: KeyPedia Agent

> How GKS maintains a continuously monitored, structured, searchable data source for FDA warning letters — capture, archival, and change detection, from a developer's perspective.

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![keypedia-banner-fda-warning-letters.png](https://storage.googleapis.com/gks-blog-images/blog-images/130c259db6914588983fac45e5018bb6.png)


The FDA publishes warning letters on its website. That page is a publication, not a data source. Letters appear on their own schedule, older entries get reorganized or removed, and nothing tells you what changed since you last looked. If warning letters matter to your supplier oversight or your own compliance posture, "check the FDA site sometimes" is not a system.

**KeyPedia treats FDA warning letters as a continuously monitored data source.**

## Capture, continuously

We monitor the warning letter page continuously, so a newly posted letter becomes a structured record in KeyPedia shortly after the FDA publishes it. Company, issuing office, subject, letter date, posted date, and the full text, searchable.

## Archive, permanently

Every capture is archived. When the FDA reorganizes its site, our records do not break. When a letter is edited or withdrawn, we still hold what was published and when. A regulatory history you can only see in its current state is not a history.

## Detect change, not just presence

New letters are the obvious event. The less obvious ones matter just as much. A letter that changes after posting. A close out that lands quietly. A company name that resolves to a facility you already track. Every warning letter joins the same graph as our 483s, import alerts, and inspection records, so one letter connects to the full enforcement picture of that facility.

## What this gets you

Search every warning letter, filter by company or office or date, rank your suppliers by enforcement history, and get updates when something new lands against a company you follow.

Warning letters are one of the sources KeyPedia monitors this way. We will cover 483s, import alerts, inspection classifications, and international sources in the posts that follow.