What is the standard storage duration for multiple-dose vials, unless otherwise specified by the manufacturer?

The standard storage duration for multiple-dose vials, unless specified differently by the manufacturer, is 28 days. This guideline helps ensure that the integrity and efficacy of the medication are maintained after the vial has been opened. After this period, the risk of contamination and degradation increases, which can compromise the safety and effectiveness of the medication. This 28-day rule is standard in many health care settings and is endorsed by various regulatory bodies to help maintain patient safety and the proper administration of medications.