DEA's Controlled Substance Ordering System (CSOS) allows suppliers to fill secure orders of electronic Schedule I-V controlled substances without the supporting paper Form 222.
Information for wholesalers, suppliers, distributors, and manufacturers:
The Drug Enforcement Administration Controlled Substance (CSOS) program certificate retrieval services will be unavailable on Saturday, February 23, 2019 from 10:00 P.M. through 6:00 A.M. Sunday, February 24, 2019 EST due to maintenance.
If you have any questions, please contact the CSOS helpdesk at 1-877-DEA-ECOM (1-877-332-3266) toll free.