ALK21-013: Efficacy and Safety of Medisorb® Naltrexone (VIVITROL®) in Adults With Opioid Dependence

Summary

This is a Phase 3 multi-center trial designed to evaluate the clinical efficacy and safety of VIVITROL® (Medisorb® naltrexone 380 mg) versus placebo when administered to adults upon discharge from inpatient treatment for opioid dependence. The study was conducted in 2 parts, Part A and Part B. The clinical portion of both parts has completed. Results for Part B are not yet available.

Timeline

Start

2008-06

Primary completion

2009-10

Completion

2010-11

Publications

• Results Krupitsky E, Nunes EV, Ling W, Gastfriend DR, Memisoglu A, Silverman BL. Injectable extended-release naltrexone (XR-NTX) for opioid dependence: long-term safety and effectiveness. Addiction. 2013 Sep;108(9):1628-37. doi: 10.1111/add.12208. Epub 2013 May 24.
• Results Nunes EV, Krupitsky E, Ling W, Zummo J, Memisoglu A, Silverman BL, Gastfriend DR. Treating Opioid Dependence With Injectable Extended-Release Naltrexone (XR-NTX): Who Will Respond? J Addict Med. 2015 May-Jun;9(3):238-43. doi: 10.1097/ADM.0000000000000125.
• Results Mitchell MC, Memisoglu A, Silverman BL. Hepatic safety of injectable extended-release naltrexone in patients with chronic hepatitis C and HIV infection. J Stud Alcohol Drugs. 2012 Nov;73(6):991-7. doi: 10.15288/jsad.2012.73.991.
• Kornor H, Lobmaier PPK, Kunoe N. Sustained-release naltrexone for opioid dependence. Cochrane Database Syst Rev. 2025 May 9;5(5):CD006140. doi: 10.1002/14651858.CD006140.pub3.
• Krupitsky E, Zvartau E, Blokhina E, Verbitskaya E, Wahlgren V, Tsoy-Podosenin M, Bushara N, Burakov A, Masalov D, Romanova T, Tyurina A, Palatkin V, Slavina T, Pecoraro A, Woody GE. Randomized trial of long-acting sustained-release naltrexone implant vs oral naltrexone or placebo for preventing relapse to opioid dependence. Arch Gen Psychiatry. 2012 Sep;69(9):973-81. doi: 10.1001/archgenpsychiatry.2012.1a.
• Krupitsky E, Nunes EV, Ling W, Illeperuma A, Gastfriend DR, Silverman BL. Injectable extended-release naltrexone for opioid dependence: a double-blind, placebo-controlled, multicentre randomised trial. Lancet. 2011 Apr 30;377(9776):1506-13. doi: 10.1016/S0140-6736(11)60358-9.

Drugs

Indications