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Partial Opioid Agonist

Extended Release Naltrexone vs Buprenorphine for Opioid Use Disorder

Phase 2 & 3
Recruiting
Led By Michael S Gordon, DPA
Research Sponsored by Friends Research Institute, Inc.
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
Willingness to enroll in XR-B or XR-NTX treatment in jail
Be older than 18 years old
Timeline
Screening 3 weeks
Treatment Varies
Follow Up 1-7,12-months
Awards & highlights

Study Summary

This trial will compare the effectiveness of two types of medication-assisted treatment for opioid use disorder among individuals in county jails in Maryland.

Who is the study for?
This trial is for adult male and female inmates in Maryland with moderate to severe opioid use disorder, or those treated for it within the last year. They must be due for release within 120 days, plan to live locally post-release, and pass a medical evaluation. Exclusions include severe liver issues, certain heart diseases or conditions that affect heart rhythm, untreated serious mental health disorders, pregnancy or breastfeeding women, extreme obesity (BMI > 40), and current enrollment in other medication-assisted treatments.Check my eligibility
What is being tested?
The study compares two extended-release medications given to individuals leaving jail: XR-B (buprenorphine) versus XR-NTX (naltrexone). Participants will receive one treatment while incarcerated followed by six monthly injections after release. The assignment of either XR-B or XR-NTX is random within gender groups.See study design
What are the potential side effects?
Potential side effects of both medications can include nausea, headache, dizziness, fatigue, injection site reactions and possible liver function changes. Side effects vary from person to person.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
Select...
I am willing to enroll in a treatment program while in jail.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~1-7,12-months
This trial's timeline: 3 weeks for screening, Varies for treatment, and 1-7,12-months for reporting.

Treatment Details

Study Objectives

Outcome measures can provide a clearer picture of what you can expect from a treatment.
Primary outcome measures
pharmacotherapy adherence
Secondary outcome measures
Criminal activity
Patient-Reported Outcomes Measurement Information System
Re-arrest
+5 more

Trial Design

2Treatment groups
Experimental Treatment
Active Control
Group I: XR-BExperimental Treatment1 Intervention
Extended-release buprenorphine
Group II: XR-NTXActive Control1 Intervention
Extended-release naltrexone

Find a Location

Who is running the clinical trial?

Friends Research Institute, Inc.Lead Sponsor
52 Previous Clinical Trials
20,368 Total Patients Enrolled
Michael S Gordon, DPAPrincipal InvestigatorFriends Research Institute, Inc.
1 Previous Clinical Trials
240 Total Patients Enrolled

Media Library

XR-B (Partial Opioid Agonist) Clinical Trial Eligibility Overview. Trial Name: NCT04408313 — Phase 2 & 3
Opioid Use Disorder Research Study Groups: XR-B, XR-NTX
Opioid Use Disorder Clinical Trial 2023: XR-B Highlights & Side Effects. Trial Name: NCT04408313 — Phase 2 & 3
XR-B (Partial Opioid Agonist) 2023 Treatment Timeline for Medical Study. Trial Name: NCT04408313 — Phase 2 & 3
Opioid Use Disorder Patient Testimony for trial: Trial Name: NCT04408313 — Phase 2 & 3

Frequently Asked Questions

These questions and answers are submitted by anonymous patients, and have not been verified by our internal team.

What medical conditions does XR-B commonly address?

"XR-B has shown efficacy in treating conditions such as chronic weight management, increased physical activity, and pain."

Answered by AI

Are we able to enroll more participants for this research project?

"The trial, which has been ongoing since October 2020, is currently looking for participants according to the latest update on clinicaltrials.gov from August 2021."

Answered by AI

Who else is applying?

What state do they live in?
District of Columbia
Maryland
What site did they apply to?
Friends Research Institute
What portion of applicants met pre-screening criteria?
Did not meet criteria
Met criteria
How many prior treatments have patients received?
1
2

Why did patients apply to this trial?

I'm tired of living day to day fighting this opioid addiction and I want to be free from the the drug once and for all, I'm not in jail, but I am homeless, living out of my car, and I've tried Methadone for 3 years only to start using Opioids again to get free of the methadone, all in all I've been battling this addiction for 5+years and I really want to be clean of all these drugs.
PatientReceived 2+ prior treatments
~60 spots leftby Jun 2025