• Nadav Friedmann, Michael R Marsman, Annelies W de Kater, Lindsay H Burns, and Lynn R Webster.
• Clinical Operations, Pain Therapeutics, Inc., Austin, Texas.
• J Opioid Manag. 2018 Nov 1; 14 (6): 437-443.

ObjectiveThis study examined the nasal abuse deterrence of REMOXY ER, a novel high-viscosity extended-release oxycodone formulation.DesignAn Institutional Review Board-approved, single-center, randomized, double-blind, placebo, and active-controlled, four-way crossover study of intranasal REMOXY ER gel, manipulated or intact, and ground oxycodone immediate-release (IR). An open label extension examined pharmacokinetics of OxyContin® ER in the first 20 subjects.ParticipantsHealthy, adult nondependent recreational opioid users with a history of intranasal abuse. Thirty-eight subjects enrolled; 36 completed.SettingA clinical research in-patient unit.InterventionsCross-over arms included nasal self-administration of the entire contents of REMOXY ER 40 mg capsules (manipulated or intact), ground oxycodone IR 40 mg tablets, and placebo. The open-label arm was ground OxyContin ER.Main Outcome MeasuresThe primary endpoint was the maximum effect (Emax) of visual analog scale ratings of Drug Liking. Secondary endpoints included Take Drug Again (12 and 24 hours), Drug High Emax, area under effect curves through 12 hours, pupillometry, peak oxycodone concentrations (Cmax), time to maximum concentration (Tmax), and Abuse Quotient (Cmax/Tmax).ResultsIntranasal REMOXY ER (manipulated or intact) elicited lower Drug Liking and Drug High compared to ground oxycodone IR. Secondary endpoints also reflected reduced Abuse Potential. Intranasal REMOXY ER (manipulated or intact) led to fourfold lower Cmax, a 57 to 128 percent longer Tmax, a >10-fold lower Abuse Quotient and lower Take Drug Again scores compared to both OxyContin ER and oxycodone IR.ConclusionIn this study, REMOXY ER demonstrated significantly lower nasal abuse potential compared to oxycodone IR or OxyContin ER.PerspectiveAbuse-deterrent drugs are intended to help fight opioid abuse. Yet the persistence of the opioid epidemic indicates that vast improvements in abuse-deterrent technology are needed. A new, high-viscosity, extended-release oxycodone formulation showed robust abuse-deterrence against the nasal route of abuse in an Food and Drug Administration-advised clinical trial in recreational opioid users.

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