Naltrexone Side Effects
What should I watch for?
Your condition will be monitored carefully while you are receiving this medicine. Visit your doctor or health care professional regularly. For this medicine to be most effective you should attend any counseling or support groups that your doctor or health care professional recommends. Do not try to overcome the effects of the medicine by taking large amounts of narcotics or by drinking large amounts of alcohol. This can cause severe problems including death. Also, you may be more sensitive to lower doses of narcotics after you stop taking this medicine.
If you are going to have surgery, tell your doctor or health care professional that you are taking this medicine.
Wear a medical ID bracelet or chain, and carry a card that describes your disease and details of your medicine and dosage times.
You may get drowsy or dizzy. Do not drive, use machinery, or do anything that needs mental alertness until you know how this medicine affects you. Do not stand or sit up quickly, especially if you are an older patient. This reduces the risk of dizzy or fainting spells. Alcohol may interfere with the effect of this medicine. Avoid alcoholic drinks.
Common and Rare Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
Abdominal or stomach pain (severe)
blurred vision, aching, burning, or swollen eyes
discomfort while urinating or frequent urination
hallucinations or seeing, hearing, or feeling things that are not there
mental depression or other mood or mental changes
ringing or buzzing in the ears
shortness of breath
swelling of the face, feet, or lower legs
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Abdominal or stomach cramping or pain (mild or moderate)
anxiety, nervousness, restlessness or trouble sleeping
joint or muscle pain
nausea or vomiting
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.