Some people have side effects like nausea, headache, constipation, dizziness, nervousness, insomnia, drowsiness, or pain in their arms and legs or stomach. If you get any of these side effects, tell your doctor. He or she may change your treatment or suggest ways you can deal with the side effects. You and your doctor will decide this. Most people take the medicine for 12 weeks or more.
Naltrexone only has to be taken once a day.
Be sure to take naltrexone just the way your doctor tells you to. Don't take extra pills, don't skip pills and don't stop taking the pills until you talk to your doctor. Like many other diseases, alcoholism affects you physically and mentally. Both your body and your mind have to be treated. In addition to medicine, your doctor will probably recommend some psychosocial treatments.