<p>The purpose of FTC warning letters is to warn companies that their conduct is likely unlawful and that they can face serious legal consequences, such as a federal lawsuit, if they do not immediately stop. Overwhelmingly, companies that receive FTC warning letters take steps quickly to correct&nbsp;<a href="/tips-advice/business-center/advertising-and-marketing/advertising-and-marketing-basics">problematic advertising or marketing language</a>&nbsp;and come into compliance with the law. In many cases, warning letters are the most rapid and effective means to address the problem.&nbsp;<a href="/news-events/media-resources/truth-advertising/about-ftc-warning-letters">Learn more about warning letters</a>.</p>