Pharmacy Operations, Drug Storage, Inventory, and Security
Security and storage
Controlled substances must be stored in a securely locked, substantially constructed cabinet or dispersed in a manner that obstructs theft; access is limited to authorized personnel. The pharmacy must be locked when a pharmacist is not present. Drugs need appropriate temperature and humidity; refrigerated products require monitored 2–8°C storage. Expired, recalled, or quarantined stock must be segregated from active inventory.
Records and inventory
Federal DEA records-invoices, dispensing records, inventories-are kept at least two years. Minnesota prescription records must be retained longer, generally five years. A biennial inventory is required, with Schedule II counted exactly. Automation such as automated dispensing cabinets must preserve an audit trail, secure controlled substances, and have a downtime and contingency procedure.
Returns, recalls, losses
Controlled substances generally go to a reverse distributor rather than back to a wholesaler. Recalls are classified I–III; the pharmacy must remove affected stock, document the action, and notify patients when a dispensed product is affected. Theft or significant loss requires a DEA Form 106 within one business day of discovery, notice to the Board of Pharmacy, and internal investigation.
Worked example
A pharmacy's monthly count shows 30 oxycodone tablets missing. The pharmacist must not simply adjust the inventory. The loss is investigated, documented, reported on DEA Form 106, and reported to the Minnesota Board; access logs and camera records are reviewed.
Traps
Reporting only "significant" losses after a delay; returning C-II stock to a wholesaler; storing controlled substances in an unlocked drawer; skipping temperature logs; failing to document recall removal.