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What are the side effects of naltrexone XR injection?

You may have an allergic reaction to naltrexone requiring emergency medical attention. Symptoms of an allergic reaction include;  itching, hives, or skin rash; difficulty breathing; and swelling of your face, lips, tongue, or throat. The following side effects associated with taking naltrexone require prompt medical attention: blurred vision or eye problems; fast heartbeat; wheezing or difficulty breathing; depressed mood, mood changes, hallucinations, confusion, or thoughts of hurting yourself; unusual bleeding or bruising; unusual weakness or tiredness; nausea, vomiting, stomach pain, low fever, loss of appetite, dark urine, light-colored or clay-colored stools, jaundice, or general ill feeling; ear pain or ringing in your ears; feeling lightheaded or fainting; skin rash or itching; pain, blisters, redness, bruising, itching, swelling, an open wound, a dark scab, or a hard lump where the medication was injected.

Other side effects are generally minor and only require medical attention if they persist or disrupt your daily life. These include: dizziness; feeling anxious, nervous, restless, or irritable; headache; decreased sex drive, impotence, or difficulty having an orgasm; increased thirst; irritation, stinging, or redness where you were injected;  muscle or joint aches; loss of appetite; nausea; sleep problems; and weakness or tiredness.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.