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U.S. Department of Health and Human Services

About FDA

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Warning and Untitled Letters: FDA Transparency Initiative

View PDF of Warning and Untitled Letters Section (26 KB)


If a person or firm violates the Federal Food, Drug and Cosmetic Act (FD&C Act), FDA may give them an opportunity to take voluntary and prompt action to correct the violation before FDA initiates an enforcement action.  FDA will issue either a Warning Letter or an Untitled Letter, depending upon the nature of the violation.

FDA uses Warning Letters for violations that may lead to enforcement action if they are not promptly and adequately corrected.  FDA uses Untitled Letters for violations that are not as significant as those that trigger warning letters.  Unlike a Warning Letter, an Untitled Letter does not include a statement warning that failure to promptly correct a violation may result in an enforcement action.

See: FDA Warning Letters

Previously, only some Centers posted Untitled Letters on FDA’s website.  As a result of the Agency’s Transparency Initiative, the Centers are working to disclose more Untitled Letters on FDA’s website.  The Agency believes that posting additional Untitled Letters may increase public accountability of firms, which may deter future violations and increase compliance with the law.  However, due to limited resources, the Agency is not able to post all Untitled Letters at this time.

Interested parties may access the available Untitled Letters and similar correspondence below.





  • Cyber LettersCDER sends cyber letters electronically to web sites whose online sales of prescription drugs may be illegal.  The letters warn these website operators that they may be engaged in illegal activities and informs them of the laws that govern prescription drug sales.
  • Untitled Letters Issued by the Office of Prescription Drug Promotion – The Untitled Letters issued by the Office of Prescription Drug Promotion (formerly known as the Division of Drug Marketing, Advertising, and Communications (DDMAC)) are mixed in with the Warning Letters Issued by CDER, and they are organized according to the year they were issued.

To date, CTP has not yet issued any Untitled Letters.  Warning Letters issued by CTP may be accessed below.