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DEA's Controlled Substance Ordering System (CSOS) allows for secure electronic transmission of Schedule I-V controlled substance orders without the supporting paper Form 222.

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Just getting started? Individuals must enroll in DEA's CSOS program before being able to order Schedule II controlled substances electronically.  Click here to enroll today.
Latest News

Effective September 1, 2016; New Web Browser Security Requirements

Web Browsers and Systems will be Required to Support TLS 1.2

The Drug Enforcement Administration (DEA) is advising all DEA registrants of pending changes to DEA's Office of Diversion Control websites.

The United States Computer Emergency Readiness Team, the National Institute of Standards and Technology, and the Payment Card Industry Security Standards Council recommend that users, including Federal agencies, upgrade their browsers and systems to software supporting Transport Layer Security (TLS) version 1.2 or higher. The DEA will comply with this recommendation in order to ensure protection of data transmitted through DEA-owned information technology infrastructure.

After August 31, 2016, all users will be required to utilize browsers with TLS version 1.2 or higher when accessing DEA Office of Diversion Control websites. You may need to update your operating system and/or internet browser to continue to access these sites.

The largest population of users expected to be impacted by this change are users implementing unsupported versions of the Windows operating system (Vista and earlier versions) and those using Internet Explorer Version 9 or earlier. Other browsers and operating systems may be affected — check with the software manufacturer to make certain that TLS 1.2 is supported and enabled on your system.

Are you TLS 1.2 compliant? Use this link to test if your browser/operating system is TLS 1.2 compliant.

If compliant, you will receive a confirmation page.

If your browser/operating system is not compliant, you will receive a connection error (ie. "This page can't be displayed") or a blank screen. You will need to upgrade your operating system and/or internet browser.

Additional Resources

Securing End-to-End Communications -

Letter to Registrants regarding TLS 1.2 (PDF)

Instructions for enabling TLS 1.2 for Internet Explorer and Google Chrome (PDF)