If there is no response after an initial naloxone dose, what is the recommended next step?

• A. Stop and transport
• B. Increase dose to 2 mg and wait
• C. Re-dose every 2-3 minutes until respirations improve
• D. Switch to benzodiazepines

Answer: (C)

Naloxone works by competing for opioid receptors and reversing opioid-induced respiratory depression. Because its duration is shorter than many opioids, a single dose may wear off before the patient fully recovers. If there is no response after the initial dose, the next best step is to give another dose and repeat at 2-3 minute intervals until respirations improve. This approach maintains receptor blockade and increases the chance of restoration of adequate breathing.

Avoid waiting passively or escalating to a fixed high dose without reassessment, and don’t switch to benzodiazepines—these can worsen respiration. While you monitor and support ventilation as needed, continue to reassess and administer additional naloxone as indicated until the patient shows signs of improvement.