Naltrexone is a medication that is used to treat addiction to opioids and alcohol. It works by blocking the effects of opioids and alcohol in the brain, which can reduce cravings and prevent relapse.

While naltrexone itself does not cause withdrawal, it is important to note that individuals who are physically dependent on opioids or alcohol may experience withdrawal symptoms if they start naltrexone treatment without first undergoing a period of detoxification. This is because naltrexone can cause sudden opioid withdrawal in individuals who are physically dependent on opioids.

Therefore, it is important for individuals who are considering naltrexone treatment to be evaluated by a healthcare professional to determine whether detoxification is necessary before starting treatment. If detoxification is needed, it should be done under medical supervision to ensure safe and effective management of withdrawal symptoms.

In addition, individuals who are receiving naltrexone treatment may experience mild side effects, such as nausea, headache, and dizziness. These side effects are generally temporary and usually go away within a few days or weeks.

If you are considering naltrexone treatment for addiction to opioids or alcohol, it is important to discuss the potential risks and benefits with a healthcare professional and to receive counseling and support to help you achieve and maintain sobriety.