Warning: Naltrexone may cause liver damage when taken in large doses. It is not likely that naltrexone will cause liver damage when taken in recommended doses. Tell your doctor if you have or have ever had hepatitis or liver disease. If you experience any of the following symptoms, stop taking naltrexone and call your doctor immediately: excessive tiredness,unusual bleeding or bruising,loss of appetite, pain in the upper right part of your stomach that lasts more than a few days, light-colored bowel movements,dark urine,or yellowing of the skin or eyes.

Keep all appointments with your doctor and the laboratory. Your doctor may order certain laboratory tests to check your body's response to naltrexone.

Talk to your doctor about the risks of taking naltrexone.

Naltrexone is used along with counseling and social support to help people who have stopped drinking alcohol and using street drugs continue to avoid drinking or using drugs. Naltrexone should not be used to treat people who are still using street drugs or drinking large amounts of alcohol. Naltrexone is in a class of medications called opiate antagonists.It works by decreasing the craving for alcohol and blocking the effects of opioid medications and opioid street drugs.

For more information on Revia(Naltrexone), click here.