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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Opioid Phase Clear all
Completed Phase 3 Interventional Results available

Efficacy Study to Evaluate Buprenorphine HCl Buccal Film in Opioid-Naive Subjects

NCT01633944
View directory record Official record
Conditions
Low Back Pain
Interventions
Buprenorphine, Placebo
Drug
Lead sponsor
BioDelivery Sciences International
Industry
Eligibility
18 Years and older
Enrollment
752 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
60
States / cities
Mobile, Alabama • Phoenix, Arizona • Anaheim, California + 51 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2017 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Not applicable Interventional Results available

Effect of Mindfulness on Opioid Use and Anxiety During Primary Care Buprenorphine Treatment (R33 Phase)

NCT04278586
View directory record Official record
Conditions
Opioid-use Disorder, Stress Related Disorder, Anxiety, Pain Interference
Interventions
Live-Online M-ROCC, Live-Online Control
Behavioral
Lead sponsor
Cambridge Health Alliance
Other
Eligibility
18 Years to 70 Years
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Somerville, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 21, 2025 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Fentanyl Sublingual Spray and Fentanyl Citrate Intravenous (IV) in Opioid Naive Subjects

NCT02576353
View directory record Official record
Conditions
Pharmacokinetics and Pharmacodynamics
Interventions
Fentanyl, Fentanyl Citrate
Drug
Lead sponsor
INSYS Therapeutics Inc
Industry
Eligibility
18 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Pasadena, California
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 3 Interventional Results available

A Study of Oral Methylnaltrexone (MNTX) for the Treatment of Opioid-Induced Constipation (OIC) in Participants With Chronic, Non-Malignant Pain

NCT01186770
View directory record Official record
Conditions
Opioid-Induced Constipation
Interventions
Methylnaltrexone, Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years and older
Enrollment
804 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
2
States / cities
Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 5, 2019 · Synced Sep 23, 2026, 5:05 AM EDT
Terminated Phase 4 Interventional Results available

Naloxegol to Prevent Lower Gastrointestinal Paralysis in Critically Ill Adults Administered Opioids

NCT02977286
View directory record Official record
Conditions
Constipation
Interventions
Naloxegol Oral Tablet, Placebo Oral Tablet, Docusate Sodium 100 Mg oral capsule [Colace], Senna 217 Mg Oral Tablet, Polyethylene Glycols, Bisacodyl 10 mg Suppository, Magnesium Citrate Oral Liquid Product, Methylnaltrexone
Drug
Lead sponsor
Tufts Medical Center
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 15, 2023 · Synced Sep 23, 2026, 5:05 AM EDT
Recruiting Phase 2 Interventional

Evaluating Buspirone to Treat Opioid Withdrawal

NCT05511909
View directory record Official record
Conditions
Opioid Use Disorder, Opioid Withdrawal, Opioid Craving, Anxiety
Interventions
Buspirone, Lofexidine, Placebo
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 23, 2026 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Not applicable Interventional

Pre-exposure Prophylaxis (PrEP) Rapid Access

NCT05528562
View directory record Official record
Conditions
Drug Use, Pre-exposure Prophylaxis (PrEP), Opioid Use Disorder
Interventions
PrEP Rapid Access, HIV self-testing, Dried blood spot testing
Other
Lead sponsor
Boston Medical Center
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 15, 2024 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Not applicable Interventional

Older Adults, Methadone, and Cognitive Function

NCT07153029
View directory record Official record
Conditions
Opioid Use Disorder, Cognitive Ability General
Interventions
Smartphone based cognitive tasks
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
55 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 23, 2026 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 4 Interventional Results available

Buprenorphine Extended-Release Subcutaneous Injection (RBP-6000) in High-risk Users

NCT04995029
View directory record Official record
Conditions
Moderate to Severe Opioid-use Disorder
Interventions
Transmucosal Buprenorphine, Extended-release Buprenorphine
Drug
Lead sponsor
Indivior Inc.
Industry
Eligibility
18 Years and older
Enrollment
785 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
28
States / cities
Garden Grove, California • Panorama City, California • San Diego, California + 21 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Sep 23, 2026, 5:05 AM EDT
Recruiting Phase 1 Interventional

Adjunctive Effects of Psilocybin and a Formulation of Buprenorphine

NCT04161066
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Psilocybin with facilitated counseling
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
21 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effects of Experimental Sleep Disturbances on Receptor Function of Study Drug

NCT04299490
View directory record Official record
Conditions
Sleep Disorder, Healthy
Interventions
Sleep Fragmentation, Within-Subject test of blinded study medication (stimulant, benzodiazepine, opioid, cannabinoid, over-the-counter pain medication, or placebo), Sleep Continuity Disruption, Undisturbed Sleep
Behavioral · Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 48 Years
Enrollment
148 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 23, 2025 · Synced Sep 23, 2026, 5:05 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

A Study Of Kappa Opioid Receptor Occupancy Of PF-04455242, Using PET (Positron Emission Tomography)

NCT00939887
View directory record Official record
Conditions
Bipolar Disorder, Depression
Interventions
PF-04455242
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
3
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 7, 2010 · Synced Sep 23, 2026, 5:05 AM EDT
Terminated Phase 2 Interventional Results available

Sublingual Fentanyl for the Management of Breakthrough Pain

NCT02514252
View directory record Official record
Conditions
Advanced Cancers
Interventions
Fentanyl Sublingual Spray (FSS), Questionnaires, Mental Ability Tests, Study Diary
Drug · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 17, 2021 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 1 Interventional

ALK33BUP-101: Safety and Pharmacodynamic Effects of ALKS 33-BUP Administered Alone and When Co-administered With Cocaine

NCT01366001
View directory record Official record
Conditions
Cocaine Abuse
Interventions
ALKS 33-BUP, ALKS 33, Placebo
Drug
Lead sponsor
Alkermes, Inc.
Industry
Eligibility
21 Years to 50 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Mar 8, 2012 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 1 Interventional

A Phase 1 Study of Substance P-Saporin in Terminal Cancer Patients With Intractable Pain

NCT02036281
View directory record Official record
Conditions
Terminally Ill, Histologically-confirmed Advanced Cancer, Pain, Intractable
Interventions
Substance P-Saporin
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
2
States / cities
La Jolla, California • Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Subacute Low Back Pain in Active Duty

NCT03502187
View directory record Official record
Conditions
Subacute Low Back Pain
Interventions
Progressive Exercise Plan, NeuromuscularElectricalStimulation(NMES), Primary Care Management (PCM)
Behavioral · Device
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years to 45 Years
Enrollment
133 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Fort Campbell North, Kentucky
Source: ClinicalTrials.gov public record
Updated Jan 24, 2022 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 4 Interventional Results available

Sofosbuvir/Velpatasvir in Postpartum Women With Opioid Use Disorder and Chronic Hepatitis C Infection

NCT03057847
View directory record Official record
Conditions
Hepatitis C, Chronic, Opioid-use Disorder
Interventions
Sofosbuvir/Velpatasvir
Drug
Lead sponsor
Elizabeth Krans, MD
Other
Eligibility
18 Years and older · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 5, 2023 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Dinutuximab and Irinotecan Versus Irinotecan to Treat Subjects With Relapsed or Refractory Small Cell Lung Cancer

NCT03098030
View directory record Official record
Conditions
Small Cell Lung Cancer
Interventions
Dinutuximab, Irinotecan, Topotecan
Biological · Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
483 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
40
States / cities
Anchorage, Alaska • Goodyear, Arizona • Tucson, Arizona + 35 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2020 · Synced Sep 23, 2026, 5:05 AM EDT
Recruiting Phase 1Phase 2 Interventional Accepts healthy volunteers

ACTION: Trial of Adding Buprenorphine, CBT, and TMS to Improve Outcomes of Long-Term Opioid Therapy for Chronic Pain

NCT06442566
View directory record Official record
Conditions
Opioid Withdrawal, Chronic Pain
Interventions
Buprenorphine Patch, Placebo, Transcranial Magnetic Stimulation (TMS), Sham Transcranial Magnetic Stimulation (TMS)
Drug · Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2029
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 4, 2025 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 3 Interventional Results available

Safety of BTDS in Subjects With Osteoarthritic (OA) Pain of Hip or Knee: A 6-Month Open-label Extension Phase

NCT01141283
View directory record Official record
Conditions
Osteoarthritis
Interventions
Buprenorphine transdermal patch
Drug
Lead sponsor
Purdue Pharma LP
Industry
Eligibility
40 Years to 75 Years
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
42
States / cities
Mesa, Arizona • Phoenix, Arizona • Tucson, Arizona + 36 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2012 · Synced Sep 23, 2026, 5:05 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

A Study Using fMRI Imaging to Evaluate the Effect of NKTR-181 on Brain Activity in Healthy, Non-physically Dependent Recreational Opioid Users.

NCT03802227
View directory record Official record
Conditions
Moderate to Severe Chronic Pain
Interventions
NKTR-181, Oxycodone IR
Drug
Lead sponsor
Nektar Therapeutics
Industry
Eligibility
18 Years to 60 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Richmond, Virginia
Source: ClinicalTrials.gov public record
Updated Jul 7, 2021 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 2 Interventional Results available

A Study Of Tanezumab as Add-On Therapy to Opioid Medication In Patients With Pain Due To Cancer That Has Spread To Bone

NCT00545129
View directory record Official record
Conditions
Neoplasm Metastasis, Palliative Care
Interventions
Tanezumab 10 mg IV, IV Placebo for tanezumab
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
12
States / cities
La Jolla, California • South Bend, Indiana • Shreveport, Louisiana + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 17, 2021 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Not applicable Interventional

Cell Phone Technology Targeting ART Adherence and Drug Use

NCT01884233
View directory record Official record
Conditions
HIV, Opioid Abuse
Interventions
Standard Care, Text Messaging CBT (TXT-CBT)
Behavioral
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 28, 2022 · Synced Sep 23, 2026, 5:05 AM EDT
Completed Phase 2 Interventional Results available

Phase 2 Herniorrhaphy Study for Opioid Elimination

NCT03695367
View directory record Official record
Conditions
Postoperative Pain
Interventions
HTX-011, Luer lock applicator, Vial access device, Ibuprofen, Acetaminophen, Ketorolac
Drug · Device
Lead sponsor
Heron Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
5
States / cities
Anaheim, California • Pasadena, California • Draper, Utah + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2026 · Synced Sep 23, 2026, 5:05 AM EDT