Clinical trial Recruiting at 6 sites Phase 4 Interventional Ages 18 to 99

Comparing office-based methadone and buprenorphine for treating opioid use disorder

Official title: Office-based Methadone Versus Buprenorphine to Address Retention in Medication for Opioid Use Disorder Treatment - A Pragmatic Hybrid Effectiveness/Implementation Trial

Run by Yale University · NCT06323824 · Data updated 2026-11-12

This study is testing whether getting methadone or buprenorphine in a doctor's office helps people with opioid use disorder stay in treatment longer.

Quick facts

PhasePhase 4
Study typeInterventional
Ages18 Years to 99 Years
SexAll
Enrollment600 (estimated)
SponsorYale University
Academic / other
Locations6 sites (Oakland, California and 5 other locations)
StatusRecruiting
StartedJune 4, 2024
Main results expectedDecember 2028
Study endsDecember 2028
Registry record updatedSeptember 14, 2026
Trial IDNCT06323824 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older who meet DSM-5 criteria for opioid use disorder and are starting a new medication for opioid use disorder treatment.

Probably not a fit

Patients who have recently been prescribed or administered more than 72 hours of medication for opioid use disorder or those with severe comorbid conditions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to compare the effectiveness of office-based methadone with pharmacy administration to office-based buprenorphine in retaining patients undergoing treatment for opioid use disorder. It is a randomized, pragmatic hybrid effectiveness and implementation trial conducted across approximately six sites, involving around 600 patients. The study will also explore barriers and facilitators to implementing office-based methadone treatment from the perspectives of patients, providers, and health systems.

Why it matters

Potential benefit: If successful, this study could improve retention rates in treatment for patients with opioid use disorder.

How similar studies have gone: Previous studies have shown varying success with similar approaches, but this specific comparison of office-based methadone and buprenorphine is relatively novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria

* 18 years of age or older;
* Meet Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria for OUD;
* Are initiating a new MOUD treatment episode

Exclusion Criteria

* Have been prescribed (and ingested) or been administered more than 72 hours of MOUD in the 7 days prior to randomization as a "bridge" to the new OUD treatment episode. Such MOUD may include prescribed (and ingested) or administered medically managed withdrawal (aka detoxification).
* Known contraindication to methadone or BUP
* Unwilling to pursue or continue pre-natal care or pregnancy counseling if determined pregnant by urine human chorionic gonadotropin (hCG) testing at the screening assessment
* Be actively suicidal or severely cognitively impaired (e.g., dementia, untreated psychosis) precluding informed consent as determined by site clinician
* Current severe comorbid substance use disorder requiring residential or inpatient treatment services as determined by site clinician
* Be unable to provide locator information including one or more contacts in addition to themselves
* Be unwilling to follow study procedures (e.g., unwilling to receive treatment from site clinician, use the study pharmacy, unwilling to be randomized to BUP or methadone, or will be unavailable for the follow-up assessments) including allowing the researchers to access their record in the EMR and state's prescription drug monitoring program
* Have previously enrolled in CTN-0131
* Currently enrolled in another research study which will conflict with study procedures
* Are currently in jail, prison or other overnight facility as required by a court of law or have pending legal action that could prevent participation in study activities
* Unable to conduct research assessments in English as determined by Site PI or their designee.

Where it's running

  • Highland Hospital Bridge Clinic at Alameda Health System
    Oakland, California, United States
    Recruiting
  • Outpatient Buprenorphine Induction Clinic, University of California, San Francisco
    San Francisco, California, United States
    Recruiting
  • Rapid Start Clinic, Kaiser Permanente Colorado
    Denver, Colorado, United States
    Recruiting
  • Officed Based Addiction Treatment Program, Boston Medical Center
    Boston, Massachusetts, United States
    Recruiting
  • Hennepin Healthcare Addiction Medicine
    Minneapolis, Minnesota, United States
    Recruiting
  • Marshall University Division of Addiction Sciences P.R.O.A.C.T
    Huntington, West Virginia, United States
    Recruiting

Study contacts

  • Principal investigator: David Fiellin, MD — Yale University
  • Study coordinator: Jessica Research Associate
  • Email: j.mckenzie@yale.edu
  • Phone: 203-785-6821

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.