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.
The Drug Enforcement Administration Controlled Substance (CSOS) program certificate retrieval services will be unavailable on Saturday, July 27, 2024 from 8:00 A.M. through 8:00 P.M. EDT due to maintenance.
If you have any questions, please contact the CSOS helpdesk at 1-877-DEA-ECOM (1-877-332-3266) toll free.