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Drug classification
Opiate antagonist/ Antitode
Mechanism of action
Competitive Opiate Receptor Antagonist —> displaces narcotic molecules, has greater affinity for receptor site, but shorter duration
Pharmacokinetics
onset of action: 2-10 mins
peak effects: 2-10 minutes
duration of effect: 20-120 minutes
Half-life = 60-90 minutes
Indications/Field use
Respiratory depression caused by narcotics/opiates
Contraindications
None
Side effects/adverse reactions
Hypotension, hypertension, nausea, vomiting, seizures, dysrhythmias
Dose and Route
Adult: 2-4 mg IN, q 3-5 minutes with max 2 doses
Pedi: 2-4 mg IN, q 3-5 minutes with max 2 doses
Precautions
May induce withdrawal in newborn infants with addicted mothers
Oral opiates may require higher doses of naxolane for reversal
After second dose consider calling medical control if breathing remains inadequate
Patients may wake up combative
Drug to Drug Interactions
May Induce withdrawal on opiate-dependent patient