This site became the new on June 19th. Learn more.
Show more Menu IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu IMPORTANT: Talk with a trusted healthcare professional before volunteering for a study. Read more... Menu
Give us feedback

Blockade Efficacy of Buprenorphine/Naloxone For Opioid Dependence

This study has been completed.
Information provided by:
National Institute on Drug Abuse (NIDA) Identifier:
First received: August 23, 2005
Last updated: January 11, 2017
Last verified: July 2007
Buprenorphine, a treatment for opioid dependence, can be mixed with naloxone, to limit abuse potential. The purpose of this study is to examine the effectiveness of buprenorphine/naloxone that is given at less than daily intervals, in order to prevent withdrawal symptoms associated with stopping opioid abuse.

Condition Intervention
Opioid-Related Disorders Drug: Buprenorphine/naloxone

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double
Primary Purpose: Treatment
Official Title: The Acute and Protracted Blockade Efficacy of Buprenorphine/Naloxone

Resource links provided by NLM:

Further study details as provided by National Institute on Drug Abuse (NIDA):

Primary Outcome Measures:
  • Physiological effects [ Time Frame: up to one day ]
  • drug effects (measured at Week 11) [ Time Frame: up to one day ]

Enrollment: 8
Study Start Date: December 2000
Study Completion Date: November 2002
Detailed Description:

Buprenorphine and naloxone are often combined to decrease withdrawal symptoms in opioid dependent individuals. Buprenorphine/naloxone is usually given daily to individuals who are attempting to stop opioid abuse; however, research suggests that individuals may be more inclined to take medication if it is given in less than daily intervals. The purpose of this study is to examine the opioid blockade effects of buprenorphine/naloxone that is administered in less than daily doses to opioid dependent individuals.

This study will last 11 weeks. Participants will stay in a residential research unit for the duration of the study. Participants will be randomly assigned to receive different doses of daily, sublingual buprenorphine/naloxone. After a minimum of 2 weeks on each dose, participants will undergo challenge sessions on each weekday for 1 week (Monday through Friday). Challenge sessions will consist of increasing doses of intramuscular hydromorphone. During the challenge session week, buprenorphine/naloxone will be given only on Monday; a placebo will be given the rest of the week. Challenge sessions will examine the blockade effects of buprenorphine/naloxone at 2, 26, 50, 74, and 98 hours after the last active dose of buprenorphine/naloxone.


Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Meets diagnostic criteria for opioid dependence
  • Qualifies for opioid substitution treatment (e.g., methadone)

Exclusion Criteria:

  • Significant psychiatric or physical disorder
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00134888

United States, Maryland
Johns Hopkins University (BPRU) Bayview Campus
Baltimore, Maryland, United States, 21224 6823
Sponsors and Collaborators
National Institute on Drug Abuse (NIDA)
Principal Investigator: Eric C. Strain, MD Johns Hopkins University
  More Information Identifier: NCT00134888     History of Changes
Other Study ID Numbers: NIDA-08045-2
Study First Received: August 23, 2005
Last Updated: January 11, 2017

Keywords provided by National Institute on Drug Abuse (NIDA):
Opioid Dependence

Additional relevant MeSH terms:
Opioid-Related Disorders
Substance-Related Disorders
Chemically-Induced Disorders
Mental Disorders
Buprenorphine, Naloxone Drug Combination
Analgesics, Opioid
Central Nervous System Depressants
Physiological Effects of Drugs
Sensory System Agents
Peripheral Nervous System Agents
Narcotic Antagonists processed this record on September 25, 2017