Overview Evaluation of Intranasal Naltrexone and Naloxone Status: Completed Trial end date: 2015-11-07 Target enrollment: Participant gender: Summary This study will be to determine the pharmacokinetics of naltrexone and naloxone when administered via intranasal separately and in combination in healthy volunteers. Phase: Phase 1 Details Lead Sponsor: National Institute on Drug Abuse (NIDA)Treatments: NaloxoneNaltrexone