What is an example of a fail-safe in pharmacy operations?

The computer not letting you process a prescription without the pharmacist's initials on the label is the best example of a fail-safe in pharmacy operations.
Fail-safes are designed to prevent errors from happening in the first place. In this case, the computer system is programmed to not allow the prescription to be processed unless the pharmacist has verified it by entering their initials on the label. This helps to ensure that all prescriptions are reviewed by a pharmacist before they are dispensed to patients.