Ketorolac duration of action is approximately

Ketorolac duration of action is approximately

• A. 1-2 hours
• B. 4-6 hours
• C. 8-12 hours
• D. 24 hours

Answer: (B)

Ketorolac provides short-term analgesia, and its effects last only a few hours. After a standard IV or IM dose, the analgesic effect typically persists about four to six hours. This aligns with its pharmacokinetic half-life of roughly four to six hours in healthy adults, so the pain relief tapers off around that window. Therefore, a four-to-six-hour duration best fits. Shorter durations (about one to two hours) would under-represent its effect, while longer durations (eight to twelve hours or a full day) are not typical for standard dosing. Individual factors like kidney function or dose can shift this a bit, but the four-to-six-hour window remains the general expectation.

Ketorolac provides short-term analgesia, and its effects last only a few hours. After a standard IV or IM dose, the analgesic effect typically persists about four to six hours. This aligns with its pharmacokinetic half-life of roughly four to six hours in healthy adults, so the pain relief tapers off around that window. Therefore, a four-to-six-hour duration best fits. Shorter durations (about one to two hours) would under-represent its effect, while longer durations (eight to twelve hours or a full day) are not typical for standard dosing. Individual factors like kidney function or dose can shift this a bit, but the four-to-six-hour window remains the general expectation.