<prompt> Naltrexone is used in opioid addiction because:To treat withdrawal symptomsTo treat overdose of opioids and prevent respiratory depressionTo prevent relapse in highly motivated patientsHas addiction potential; used for detoxification of opioid  <response>: The only indication for naltrexone in opioid dependence is relapse prevention in highly motivated patients. For opioid overdose Naloxone is used and not naltrexone. Naltrexone must be discontinued 48 to 72 hours prior to receiving opiate analgesia. Most of the adverse effects of naltrexone are gastrointestinal, including nausea, vomiting, and abdominal pain or discomfo 