Which schedules are the most tightly controlled and require storage in a lockable cabinet?

• A. Schedule 3 and 4
• B. Schedule 2 and 3
• C. Schedule 1 and 2
• D. Schedule 4 and 5

Answer: (C)

The most tightly controlled drugs are those with the highest abuse potential and the most restricted medical use. Schedule 1 drugs have no accepted medical use and require the strictest controls, including secure, highly restricted storage. Schedule 2 drugs do have medical uses but carry a high potential for abuse, so they also require strict storage—typically a locked cabinet with strict access controls and documentation.

Schedules 3, 4, and 5 have progressively fewer restrictions, though they still require secure storage. The combination that demands the strongest controls and lockable storage is Schedule 1 and Schedule 2.