Zurnai

Headache, nausea, vomiting, flushing, chills, or dizziness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.

Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

In someone who has been using an opioid regularly, withdrawal symptoms can happen suddenly after receiving this medication. Withdrawal symptoms may include body aches, fever, sweating, watering eyes, runny nose, sneezing, goose bumps, yawning, weakness, shivering/trembling, nervousness, restlessness, diarrhea, nausea, vomiting, stomach cramps, increased blood pressure, or fast heartbeat.

A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.

This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at MedWatch: The FDA Safety Information and Adverse Event Reporting Program.

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Before using nalmefene, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history.

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

Since untreated opioid overdose can harm both a pregnant woman and her unborn baby, this medication may be used during pregnancy. However, nalmefene may cause opioid withdrawal in your unborn baby. Tell your doctor right away that you used this medication, so you and your unborn baby can be monitored. Ask your doctor for details.

It is unknown if this medication passes into breast milk. However, it is unlikely to harm a nursing infant. Consult your doctor before breastfeeding.

Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.

If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call 1-800-222-1222. Canada residents can call 1-844-764-7669.

Ask your doctor or pharmacist about ways to prevent opioid overdose. Teach your close family or household members the signs and symptoms of an opioid overdose and tell them where you keep this medication.

Not applicable.

Store at room temperature. Do not refrigerate or freeze. Keep the medication in the original carton to protect from light. From time to time, check the expiration date and replace the medication before it expires. Keep all medications away from children and pets.

Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this medication when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.