Narcan Side Effects
What should I watch for?
Keep this medicine ready for use in the case of a narcotic overdose. Make sure that you have the phone number of your doctor or health care professional and local hospital ready. You may need to have additional doses of this medicine. Each nasal spray contains a single dose. Some emergencies may require additional doses.
After use, bring the treated person to the nearest hospital or call 911. Make sure the treating health care professional knows that the person has received an injection of this medicine. You will receive additional instructions on what to do during and after use of this medicine before an emergency occurs.
Side Effects to watch for
Side effects that you should report to your doctor or health care professional as soon as possible:
- allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
- breathing problems
- fast, irregular heartbeat
- high blood pressure
- pain that was controlled by narcotic pain medicine
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
What may interact with this drug?
This medicine is only used during an emergency. No interactions are expected during emergency use.