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ClinicalTrials.gov 5 recruiting now early-phase tilt small index

Opioid Use Disorder (OUD): early-phase trial registry

5 of 8 indexed Opioid Use Disorder (OUD) trials are currently recruiting, with more weight in Phase 1-2.

Corpus placement: #2,176 of 28,707 conditions by registered trial count.

8 US clinical trials · 5 currently recruiting · #2,176 of 28,707 conditions by registered trial count

Opioid Use Disorder (OUD): 8 US clinical trials tracked, 5 recruiting.

Opioid Use Disorder (OUD) is the subject of 8 registered US clinical trials on ClinicalTrials.gov, 5 of them currently open to new participants. 1 are in Phase 3-4 (later-stage) and 2 in Phase 1-2 (earlier-stage). The most active sponsor is RTI International, running 1 of these trials.

Enrollment posture brief

Registry condition opioid-use-disorder-oud

OPEN 5 | RECR 63% | LATE 1 | EARLY 2 | RANK #2176 | SPON 1

Nearest open-share peer: Adolescent (63% recruiting · 16 trials)

Activity, Motor75%Opioid Use Disorder (this)63%Achalasia50%Abdominal Cancer25%Acne Scars - Mixed Atrophic 25%
Open-enrollment share among volume-matched conditions near Opioid Use Disorder (OUD)

Opioid Use Disorder (OUD) lists 5 open slots (63% of 8 indexed trials). Peers are matched on registered volume, not therapeutic-area browse lists. How peer matching works →

Key findings

What ClinicalTrials.gov does not surface for Opioid Use Disorder (OUD) on its own pages , computed from the registry mirror as of 2026-08-08. Each line carries its own denominator so it can be quoted as it stands.

  1. Opioid Use Disorder (OUD) is recruiting above its size-band peers.

    5 of 8 indexed trials (62.5%) are open to enrollment, against a 46.5% average across 27,806 conditions with fewer than 20 trials. The peer set uses the same ClinicalTrials.gov-derived counts as this page.

  2. Sponsorship of Opioid Use Disorder (OUD) trials is spread across many organizations.

    RTI International accounts for 1 of 8 trials (12.5%). 8 distinct sponsors appear on at least one study for this condition label.

  3. Most Opioid Use Disorder (OUD) trials plan to enrol fewer than 100 people.

    Median target enrolment is 67 among the 8 trials that report a genuine target (sentinel values excluded). 6 of those (75%) plan for fewer than 100 participants.

  4. Opioid Use Disorder (OUD) research is mostly interventional.

    7 interventional and 1 observational studies make up this index (87.5% interventional). Study type is sponsor-reported on ClinicalTrials.gov.

Phase 11Phase 21Phase 31

Phase Distribution

PhaseTrial count
Phase 1 1
Phase 2 1
Phase 3 1

Named interventions

Most-linked intervention names on Opioid Use Disorder (OUD) records (sponsor-reported on ClinicalTrials.gov). Counts are trial links, not unique products.

Team Intervention Other
1 trials
MMR Behavioral
1 trials
MM Behavioral
1 trials
XR-BUP Drug
1 trials
SL-BUP Drug
1 trials
Wait-list control Other
1 trials
Communities That HEAL Other
1 trials
XR-NTX Drug
1 trials

US sites by state

Facility locations filed on Opioid Use Disorder (OUD) trials. A trial with sites in several states counts in each.

New York 3 trials
California 3 trials
Pennsylvania 2 trials
Oregon 2 trials
New Mexico 2 trials
Massachusetts 2 trials
Connecticut 2 trials
Utah 1 trials

Source: ClinicalTrials.gov, National Library of Medicine. Data is informational only.

What to do with this Opioid Use Disorder (OUD) page

8 registered trials, 5 currently recruiting, is a starting point for a conversation, not a diagnosis or a recommendation.

  • 5 Opioid Use Disorder (OUD) trials are currently recruiting, check eligibility criteria before contacting a site. Browse recruiting trials
  • RTI International sponsors the most Opioid Use Disorder (OUD) trials on record, review their full trial history before evaluating a specific study. See RTI International's trials
  • Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. This Opioid Use Disorder (OUD) condition card totals 8 registered trials; most-linked intervention Team Intervention; top US site state New York. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.