Completely or partially reversing the effects of narcotics and managing known or suspected overdose of narcotics. It may also be used for other conditions as determined by your doctor.
Nalmefene is a narcotic antagonist. It works by blocking opiate receptor sites, which reverses or prevents toxic effects of narcotic (opioid) analgesics.
Contact your doctor or health care provider right away if any of these apply to you.
Some medical conditions may interact with Nalmefene . Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
Some MEDICINES MAY INTERACT with Nalmefene . Tell your health care provider if you are taking any other medicines, especially any of the following:
This may not be a complete list of all interactions that may occur. Ask your health care provider if Nalmefene may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
Use Nalmefene as directed by your doctor. Check the label on the medicine for exact dosing instructions.
Ask your health care provider any questions you may have about how to use Nalmefene .
If you are addicted to narcotics and are given Nalmefene , you may experience WITHDRAWAL symptoms, including abnormal skin sensations; anxiety; diarrhea; fever; goose bumps; nausea; pain; rapid heartbeat; rigid muscles; runny nose; seeing, hearing, or feeling things that are not there; shivering or tremors; sneezing; sweating; trouble sleeping; and vomiting.
All medicines may cause side effects, but many people have no, or minor, side effects. Check with your doctor if any of these most COMMON side effects persist or become bothersome:
Dizziness; nausea; vomiting.Seek medical attention right away if any of these SEVERE side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue); fainting; fast, slow, or irregular heartbeat; fever; flushing; heart rhythm changes; seizures; severe or persistent headache or dizziness; shortness of breath; sudden chest pain.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.
Contact 1-800-222-1222 (the American Association of Poison Control Centers), your local poison control center (http://www.aapcc.org), or emergency room immediately.Proper storage of Nalmefene :
Nalmefene is usually handled and stored by a health care provider. If you are using Nalmefene at home, store Nalmefene as directed by your pharmacist or health care provider. Keep Nalmefene out of the reach of children and away from pets.
This information is a summary only. It does not contain all information about Nalmefene . If you have questions about the medicine you are taking or would like more information, check with your doctor, pharmacist, or other health care provider.