blocks opioid receptors, so it's a good option for people who are detoxed already.
If Naltrexone is used prior to detox, it will lead to immediate withdrawal symptoms
. In addition, use of opioids after discontinuing Naltrexone are at risk for serious overdose
, most likely due to loss of tolerance. Naltrexone is best for motivated people who have already undergone detoxification.
Answer assisted by Thomas Wolski Jr, Medical Student