Naloxone Injection

Naloxone injection is used along with emergency medical treatment to reverse the life-threatening effects of a known or suspected opiate (narcotic) overdose. Naloxone injection is also used after surgery to reverse the effects of opiates given during surgery. Naloxone injection is given to newborns to decrease the effects of opiates received by the pregnant mother prior to delivery. Naloxone injection is in a class of medications called opiate antagonists. It works by blocking the effects of opiates to relieve dangerous symptoms caused by high levels of opiates in the blood.

🔔 How should this medicine be used?

Naloxone injection comes as a solution (liquid) in vials, ampules, and in prefilled syringes to be injected intravenously (into a vein), intramuscularly (into a muscle), or subcutaneously (just under the skin). It is usually given as needed to treat opiate overdoses.

Naloxone injection may not reverse the effects of certain opiates such as buprenorphine (Belbuca, Buprenex, Butrans) and pentazocine and may require additional naloxone doses.

You will probably be unable to treat yourself if you experience an opiate overdose. You should make sure that your family members, caregivers, or the people who spend time with you know how to tell if you are experiencing an overdose, how to inject naloxone, and what to do until emergency medical help arrives. Your doctor or pharmacist will show you and your family members how to administer the medication. You and anyone who may need to administer the medication should read the instructions that come with the device and practice with the training device provided with the medication. Ask your pharmacist for the instructions or visit the manufacturer’s website. In case of emergency, even a person who has not been trained to inject naloxone should still try to inject the medication.

Symptoms of an opioid overdose include excessive sleepiness; not awakening when spoken to in a loud voice or when the middle of your chest is rubbed firmly; shallow or stopped breathing; or small pupils (black circles in the center of the eyes). If someone sees that you are experiencing these symptoms, he or she should give you your first dose of naloxone into the muscle or under the skin of your thigh. The medication may be injected through your clothing if necessary in an emergency. After injecting naloxone, the person should call 911 immediately and then stay with you and watch you closely until emergency medical help arrives. Your symptoms may return within a few minutes after you receive a naloxone injection. If your symptoms return, the person should use a new automatic injection device to give you another dose of naloxone. Additional injections may be given every 2-3 minutes if symptoms return before medical help arrives.

Each single-dose injection syringe should be used only once and then should be discarded. Ask your doctor or pharmacist how to safely dispose of used syringes.

🔔 Other uses for this medicine

This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.