What defines the ability to return dispensed drugs to stock?

The ability to return dispensed drugs to stock is defined by the condition of the drug packaging. Unopened containers are acceptable for return because they have not been compromised or exposed to any factors that could affect their safety, efficacy, or integrity. When a medication is in an unopened container, it maintains its original sterile and valid condition, making it safe for further use or redistribution.

Other options like opened items, drugs in use, and partially used medications are generally not permitted to be returned to stock due to concerns about contamination, stability, or expiration once they have been opened or used. These factors could compromise the quality and safety of the drugs, which is why only unopened containers can be reliably returned and restocked.