Naltrexone in the Treatment of Ketamine Use Disorders: A Case Report and Literature Review (Verma, et al, 2025)
"findings consistent w/ 2 prior reports - use of naltrexone in KUDs at the dosage of 50 mg/day successfully helped patients achieve abstinence... naltrexone reduces antidepressant effects of ketamine, indicating overlap between opioid system & ketamine's NMDA receptor activity. "
Naltrexone in the Treatment of Ketamine Use Disorders: A Case Report and Literature Review - PubMed
Our findings are consistent with 2 prior reports that have highlighted the use of naltrexone in KUDs. The 2 previous case reports indicated that naltrexone at the dosage of 50 mg/day successfully helped the patients to achieve abstinence. Studies have shown that naltrexone reduces the antidepressant …

(2025):"Our findings are consistent with 2 prior reports that have highlighted the use of naltrexone in KUDs. The 2 previous case reports indicated that naltrexone at the dosage of 50 mg/day successfully helped the patients to achieve abstinence. Studies have shown that naltrexone reduces the antidepressant effects of ketamine in treatment-resistant depression, indicating an overlap between the opioid system and ketamine's NMDA receptor activity."
Important to note that while ketamine can be used as a medicine in substance use disorder, people can sometimes become dependent with misuse, which may be addressed by naltrexone.