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A medication'sstabilityrefers tohow well it maintains potency, effectiveness, and safety over time. Several factors candegrade medications, includingoxygen, moisture, temperature, and light.
Oxygen exposurecan causeoxidation, leading to drug degradation and loss of potency.
Many medications, especiallyvitamins (e.g., vitamin C), biologics, and certain antibiotics, are susceptible to oxidative damage.
Medications requiring protection from oxygen are often packaged inair-tight containersorblister packs.
A. Allergies→ Incorrect; allergies affect thepatient, not the drug’sstability.
B. Equivalence→ Incorrect; equivalence refers tobioavailabilitybetween generic and brand-name drugs, not drug stability.
D. Indications→ Incorrect; indications refer toapproved uses of a drug, not factors affecting its stability.
Other Answer Choices Explained:References:
USP <797> and <795> Guidelines on Medication Stability
FDA Drug Stability and Shelf Life Guidelines
PTCB PTCE Exam Content Outline (Medication Storage & Stability)
