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Controlled Substance Ordering System
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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

Beware: Controlled Substance Ordering System (CSOS) Fraud Scheme

The Drug Enforcement Administration is warning the DEA registrant population of a fraud scheme in which scammers claim to be "Federal Agents" from the DEA CSOS Division who are requesting copies of DEA Registration(s), state license(s) and customer/supplier information. Please note that in order for registrants to utilize the Controlled Substance Ordering System (CSOS), applications and required supplemental information are only accepted via mail and are never requested without registrant initiation. If a registrant is seeking help with digital certificate download or renewals, a CSOS representative would ask the user for a security passcode only known to that user. Security concerns related to CSOS can be reported online and/or by calling 1-877-DEA-ECOM (1-877-332-3266) toll free.