Naloxone - parenteral

Patient Medicine Information
Why do I need this medicine?
Naloxone is used to in the emergency treatment of suspected or known opioid overdose.

Opioid overdose is a condition caused by excessive use of opioids (strong painkillers such as morphine, tramadol, oxycodone, methadone). The signs and symptoms of opioid overdose are unusual sleepiness, slow or shallow breathing, small pupils, and bluish color of hands, feet, or limbs.
How do I use this medicine?
Naloxone may be given intramuscularly (into the muscle) or intravenously (into the vein).

Your doctor or nurse will administer the injection for you.
What should I take note of while taking this medicine?
Inform your doctor if you have the following conditions:
  • heart disease
  • history of seizure
Let your doctor know if you are pregnant or breastfeeding.

Be sure to check with your doctor or pharmacist before giving this medicine to a child.
What side effects could I experience?
Naloxone may cause any of the following side effects: stomach upset, dizziness, flushing, and pain, irritation and swelling at the injection site.

Some side effects may need immediate medical help. Alert your doctor quickly if you experience any of the following:
  • body aches
  • diarrhea
  • fits or seizure
  • shortness of breath
  • abnormal heartbeat
  • feeling agitated
  • mood changes
  • seeing or hearing things that are not existent
  • shakiness
  • sweating a lot
  • high or low blood pressure
Inform your doctor if any of these side effects do not go away or are severe, or if you experience other side effects.
Can I take this with other medicines?
Inform your doctor and pharmacist if you are taking any other medicines used to treat moderate to severe pain e.g. nalbuphine, pentazocine, fentanyl.

Always notify your doctor and pharmacist if you are taking any other medicines, including herbal tonics such as traditional Chinese medicines, supplements and medicines that you buy without a prescription.
What special dietary instructions should I follow?
Avoid alcohol.
How should I store this medicine?
Store in a cool, dry place away from the reach of children. Protect from light.

Medicines must not be used past the expiry date.
This information is independently developed by MIMS based on naloxone - parenteral and is provided for your reference only. It is not a replacement for and should only be used in conjunction with full consultation with a licensed healthcare professional, the information provided by your pharmacist and/or the manufacturer of the medication. It may not contain all the available information you require and cannot substitute professional medical care, nor does it take into account all individual circumstances. Although great effort has been made to ensure content accuracy, we shall not be held responsible or liable for any claims or damages arising from the use or misuse of the information contained herein, its contents or omissions, or otherwise. Copyright © 2021 MIMS. All rights reserved. Powered by
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