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 an overdose, it is important to note that individuals who are receiving naltrexone treatment may be at increased risk of overdose if they relapse and use opioids or alcohol. This is because naltrexone can block the effects of opioids and alcohol, which can lead individuals to take larger amounts of these substances in an attempt to overcome the blocking effect.

Additionally, if an individual who is receiving naltrexone treatment for opioid addiction does relapse and use opioids, they may be at increased risk of overdose due to reduced tolerance to the drug. Naltrexone can reduce tolerance to opioids, which can increase the risk of overdose if an individual uses opioids after a period of abstinence.

Therefore, it is important for individuals who are receiving naltrexone treatment to be closely monitored by a healthcare professional and to receive regular counseling and support to help them achieve and maintain sobriety. If you are concerned about the risk of overdose, it is important to discuss your concerns with a healthcare professional and to explore all available treatment options.