Opioid antagonists

Medication class detail with safety cues and nursing action focus.

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Opioid antagonists

Examples: naloxone

Mechanism

Competes at opioid receptors and can rapidly reverse opioid effects.

Used for

  • Opioid overdose reversal
  • Respiratory depression from opioids

Side effects

  • Acute withdrawal
  • Pain return
  • Re-sedation after short duration

Nursing actions

  • Support airway and breathing first.
  • Monitor for re-sedation because naloxone may wear off before the opioid.
  • Prepare for agitation or withdrawal symptoms.

Hold / question cues

  • Do not delay ventilatory support while waiting for medication access.

Antidote / reversal

  • No routine class-specific antidote or reversal agent is seeded for this class; hold/question unsafe doses, support ABCs, notify the provider, and use facility or poison-control guidance for toxicity.

NCLEX pearl

  • Naloxone wakes breathing, not the whole problem; keep reassessing respirations.