Pediatric Medication

Brand Names: US

Evzio; Narcan

Brand Names: Canada

Naloxone Hydrochloride Injection; Naloxone Hydrochloride Injection USP

What is this drug used for?

  • It is used to avoid side effects from some drugs.
  • It is used to treat some overdoses.
  • It may be given to your child for other reasons. Talk with the doctor.

What do I need to tell the doctor BEFORE my child takes this drug?

  • If your child has an allergy to naloxone or any other part of this drug.
  • If your child is allergic to any drugs like this one or any other drugs, foods, or other substances. Tell the doctor about the allergy and what signs your child had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
This drug may interact with other drugs or health problems.
Tell the doctor and pharmacist about all of your child’s drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for your child to take this drug with all of his/her drugs and health problems. Do not start, stop, or change the dose of any drug your child takes without checking with the doctor.

What are some things I need to know or do while my child takes this drug?

All products:

  • Tell all of your child’s health care providers that your child is taking this drug. This includes your child’s doctors, nurses, pharmacists, and dentists.
  • If your child is addicted to pain drugs and is given this drug, your child may have signs of withdrawal. Talk with the doctor.
  • In infants younger than 4 weeks old who have been getting opioid drugs on a regular basis, sudden withdrawal may be life-threatening if not treated right away. Get medical help right away if your child has a seizure, is crying more than normal, or has increased reflexes.

If your child is pregnant or breast-feeding a baby:

  • Talk with the doctor if your child is pregnant, becomes pregnant, or is breast-feeding a baby. You will need to talk about the benefits and risks of using this drug.
  • If this drug is used during pregnancy, it may cause withdrawal in the unborn baby. A doctor will need to check on the unborn baby after this drug is used.

Nose spray and auto-injector shot:

  • After using this drug, overdose symptoms may go away and come back. It is important to get medical help right away after using this drug.

What are some side effects that I need to call my child’s doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your child’s doctor or get medical help right away if your child has any of the following signs or symptoms that may be related to a very bad side effect:
  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Chest pain or pressure or a fast heartbeat.
  • A heartbeat that does not feel normal.
  • Shortness of breath.
  • Very bad dizziness or passing out.
  • Very bad headache.
  • Seizures.

What are some other side effects of this drug?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your child’s doctor or get medical help if any of these side effects or any other side effects bother your child or do not go away:

Nose spray:

  • Muscle pain.
  • Headache.
  • Dry nose.
  • Stuffy nose.
  • Swelling in the nose.

All injection products:

  • Upset stomach or throwing up.
These are not all of the side effects that may occur. If you have questions about side effects, call your child’s doctor. Call your child’s doctor for medical advice about side effects.
You may report side effects to your national health agency.

How is this drug best given?

Give this drug as ordered by your child’s doctor. Read all information given to you. Follow all instructions closely.

Nose spray and auto-injector shot:

  • Follow how to give this drug as you have been told by your child’s doctor or read the package insert.
  • If you will be giving your child the shot, your child’s doctor or nurse will teach you how to give the shot.
  • Read how to use before an emergency happens.
  • Someone else may have to give this drug. Be sure others know where this drug is stored and how to give it if needed.
  • Get medical help right away after using this drug.
  • Do not use if this drug is out of date. Get a new one.

Nose spray:

  • For the nose only.
  • Each nasal spray has only 1 dose and cannot be reused. If another dose is needed, you will need to use new nasal spray.
  • If using more than 1 dose, switch nostrils with each dose.

Auto-injector shot:

  • It is given as a shot into a muscle or into the fatty part of the skin.
  • Jab straight into the outer thigh until it clicks and hold for as long as you were told.
  • Do not use this drug if the solution changes color, is cloudy, or has particles. Get a new one.
  • Each auto-injector has only 1 dose. If another dose is needed, you will need to use a second auto-injector.

All other shot products:

  • It is given as a shot into a muscle, vein, or into the fatty part of the skin.

What do I do if my child misses a dose?

  • Get medical help right away.

How do I store and/or throw out this drug?

Nose spray:

  • Store in the original container at room temperature.
  • Do not freeze.
  • Protect from light.

Auto-injector shot:

  • Store at room temperature. Do not freeze.
  • Store in the case you were given.

All other shot products:

  • If you need to store this drug at home, talk with your child’s doctor, nurse, or pharmacist about how to store it.

All products:

  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

General drug facts

  • If your child’s symptoms or health problems do not get better or if they become worse, call your child’s doctor.
  • Do not share your child’s drug with others and do not give anyone else’s drug to your child.
  • Keep a list of all your child’s drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your child’s doctor.
  • Talk with your child’s doctor before giving your child any new drug, including prescription or OTC, natural products, or vitamins.
  • Some drugs may have another patient information leaflet. If you have any questions about this drug, please talk with your child’s doctor, nurse, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

Consumer Information Use and Disclaimer

This information should not be used to decide whether or not to take this medicine or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to this medicine. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Last Reviewed Date



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