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FoodRecallWatch
Regulation & Compliance

FDA Warning Letter

An official communication from the FDA notifying a company of significant regulatory violations found during inspection.

What It Means

An FDA warning letter is a formal written communication from the FDA to a company or individual that has been found to have committed significant violations of FDA regulations. Warning letters are one of the FDA's primary enforcement tools and are issued when the agency determines that a violation is serious enough to warrant formal notification but does not require immediate enforcement action such as a seizure, injunction, or criminal prosecution. In the context of food safety, warning letters are commonly issued for violations found during FDA facility inspections, including failure to implement adequate HACCP or preventive controls plans, insanitary conditions, adulteration, misbranding, failure to register a food facility, violations of the Dietary Supplement Health and Education Act, and failure to comply with FSMA requirements. When the FDA issues a warning letter, the recipient is expected to respond within 15 working days, outlining the corrective actions they have taken or plan to take to address the violations. Warning letters are made public on the FDA's website and can be searched by company name, subject, and date. Failure to adequately address the violations cited in a warning letter can result in more serious enforcement actions including product recalls, import alerts, seizures, injunctions, and criminal prosecution. Companies that receive warning letters are closely monitored by the FDA through follow-up inspections.

Related Terms

Frequently Asked Questions

What does FDA Warning Letter mean?

An official communication from the FDA notifying a company of significant regulatory violations found during inspection.

Why is FDA Warning Letter important for food safety?

An FDA warning letter is a formal written communication from the FDA to a company or individual that has been found to have committed significant violations of FDA regulations. Warning letters are one of the FDA's primary enforcement tools and are issued when the agency determines that a violation i...

this entity is one of the U.S. FDA food, drug, and device recalls concepts that recurs across this site. The definition above is the technical answer; the paragraphs below add the practical context for how the concept connects to the the FDA openFDA enforcement-report API data behind every per-entity page on the site.

In the the FDA openFDA enforcement-report API data, this concept shapes one or more of the fields that drive the per-entity grades and rankings on this site. The methodology page describes which fields feed into which output; this glossary entry documents the underlying term.

Source: FDA Recalls, Market Withdrawals and Safety Alerts, 2026.