PerUSP standards, a drug with an expiration date ofMarch 2025is consideredvalid until the last day of the month, which isMarch 31, 2025. This applies unless otherwise specified by the manufacturer.
If a drug is labeledMM/YYYY, itremains valid until the last day of that month.
If a drug is labeled with aspecific day (MM/DD/YYYY), itexpires at the end of that day.
A. February 28, 2025→ Incorrect; the expiration is at the end ofMarch, not February.
B. March 1, 2025→ Incorrect; the drug is stillusable until March 31.
D. March 1, 2026→ Incorrect; the drugexpires in March 2025, not 2026.
Expiration Date Rules:Other Answer Choices Explained:References:
USP <797> Pharmaceutical Compounding – Expiration and Beyond-Use Dating (BUD) Guidelines
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