What is the administration duration for the IV/IO acetaminophen dose in adults?

• A. Thirty minutes
• B. Five minutes
• C. One hour
• D. Fifteen minutes

Answer: (D)

Infusion duration is chosen to deliver analgesia quickly while minimizing infusion-related risks. For adults receiving IV/IO acetaminophen, the standard administration time is a 15-minute infusion. This duration provides rapid onset of pain relief without the risks associated with a very rapid bolus or with a too-slow administration that delays effect. Infusing over five minutes is generally too fast and can raise acute reactions, while infusing longer than 15 minutes would unnecessarily delay relief and isn’t how the medication is labeled or typically used. So, the best duration is fifteen minutes.