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Naloxone

An opioid antagonist that rapidly binds to opioid receptors, blocking the effects of drugs like morphine, heroin, or fentanyl.

Dosage by Body Weight

In a pediatric emergency (accidental ingestion), 0.1 mg/kg is given. Nasal spray is fixed-dose (4mg) and safe for use in all ages.

  1. Body Weight
    Any weight
    Dose
    4 mg (Nasal) or 0.1 mg/kg (IM)
    Frequency
    Once (Repeat every 2-3 mins if no response)
    Tracking Notes
    Always call emergency services immediately.

Formulation

Nasal SprayInjection

Purpose

Emergency reversal of opioid overdose.

Generic Name

Naloxone Hydrochloride

Branded Drug Names

Naloxone is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:

  • Narcan
  • Kloxxado

Scheduled Drug

Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.

Alternatives

Naltrexone (maintenance only)

Disclaimer: This information is for educational purposes only. WHO references and weight bands are simplified for tracking and must not replace medical advice. Always consult with a healthcare professional before starting or changing any medication.