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ClinicalTrials.gov public records Last synced Sep 11, 2026, 2:22 AM EDT

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Showing 1–24 of 57 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Opioid antagonist Clear all
Completed Phase 2Phase 3 Interventional Results available

The Efficacy of Suvorexant in Treatment of Patients With Substance Use Disorder and Insomnia: A Pilot Open Trial

NCT03412591
View directory record Official record
Conditions
Sleep Disturbance, Craving, Cortisol; Hypersecretion
Interventions
Suvorexant 20 mg
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
21 Years to 64 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Wernersville, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 12, 2024 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

ALK33-001: A Study of RDC-0313 Administered to Healthy Adults

NCT00800319
View directory record Official record
Conditions
Alcohol Dependence
Interventions
RDC-0313, Placebo
Drug
Lead sponsor
Alkermes, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2011 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 4 Interventional

Long-acting Buprenorphine vs. Naltrexone Opioid Treatments in CJS-involved Adults

NCT04219540
View directory record Official record
Conditions
Opioid-use Disorder
Interventions
XR-B (SUBLOCADETM), XR-NTX
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
675 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
6
States / cities
New Haven, Connecticut • Baltimore, Maryland • Hanover, New Hampshire + 3 more
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 4 Interventional

Rapid Antidepressant Improvement Secondary to Excitatory Brain Responses

NCT04276259
View directory record Official record
Conditions
Major Depressive Disorder, Depression
Interventions
Buprenorphine, Naltrexone, Oral Placebo, IM Placebo, Theta burst stimulation (TBS) of the ventromedial prefrontal cortex.
Drug · Device
Lead sponsor
Marta Peciña, MD PhD
Other
Eligibility
18 Years to 55 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 2 Interventional Results available

Fast-Fail Trials in Mood and Anxiety Spectrum Disorders; Kappa Opioid Receptor Phase 2a

NCT02218736
View directory record Official record
Conditions
ANXIETY DISORDERS (or Anxiety and Phobic Neuroses)
Interventions
CERC-501, placebo
Drug
Lead sponsor
Duke University
Other
Eligibility
21 Years to 65 Years
Enrollment
163 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
6
States / cities
New Haven, Connecticut • Indianapolis, Indiana • New York, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 7, 2019 · Synced Sep 11, 2026, 2:22 AM EDT
Terminated Phase 1 Interventional

Pharmacokinetics of Low Dose Ketamine Infusion

NCT00618397
View directory record Official record
Conditions
Sedation, Opioid Tolerance
Interventions
Ketamine
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
3 Years to 18 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Oct 25, 2016 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Naloxone and Intravenous Methylnaltrexone Effects on Bladder Function

NCT01367561
View directory record Official record
Conditions
Healthy Males
Interventions
Naloxone, IV Methylnaltrexone (MNTX), Placebo
Drug
Lead sponsor
Bausch Health Americas, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2003
U.S. locations
1
States / cities
Tarrytown, New York
Source: ClinicalTrials.gov public record
Updated Apr 11, 2023 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Youth Opioid Recovery Support: Improving Care Systems

NCT04015115
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
Youth Opioid Recovery Support service model
Behavioral
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 26 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 6, 2022 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Not applicable Interventional Results available

Comparison of Two Naloxone Infusion Rates on the Postoperative Recovery of Patients Undergoing Spine Fusion Surgery

NCT01531439
View directory record Official record
Conditions
Pain, Postoperative, Postoperative Nausea and Vomiting, Scoliosis
Interventions
Naloxone
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
10 Years to 21 Years
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 9, 2020 · Synced Sep 11, 2026, 2:22 AM EDT
Active, not recruiting Phase 1 Interventional Accepts healthy volunteers

Multi-System Analysis of Opioid Receptor Binding

NCT05528848
View directory record Official record
Conditions
Healthy, Opioid Use Disorder
Interventions
Carfentanil, C-11, Naloxone, Loperamide Hydrochloride
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 50 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Sep 11, 2026, 2:22 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Brain Response to Pain Control in People With Chronic Pain

NCT01878019
View directory record Official record
Conditions
Pain
Interventions
Not listed
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 8, 2019 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 4 Interventional Results available

Effect of Methylnaltrexone on the PK/PD Profiles of Ticagrelor in Patients Treated With Morphine

NCT02403830
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Methylnaltrexone, Placebo, Morphine, Ticagrelor
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 2 Interventional Results available

Impact of Colchicine and Low-dose Naltrexone on COVID-19

NCT04756128
View directory record Official record
Conditions
Covid19
Interventions
Colchicine 0.6 mg, Naltrexone
Drug
Lead sponsor
HealthPartners Institute
Other
Eligibility
18 Years and older
Enrollment
142 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021
U.S. locations
2
States / cities
Saint Louis Park, Minnesota • Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Sep 11, 2026, 2:22 AM EDT
Terminated Phase 3 Interventional

Naloxone Hydrochloride Study for Relief of Pruritus in Patients With MF or SS Forms of CTCL

NCT02811783
View directory record Official record
Conditions
Mycosis Fungoides, Lymphoma, T-Cell, Cutaneous, Sézary Syndrome
Interventions
Naloxone Hydrochloride Lotion, 0.5%, Placebo Lotion
Drug
Lead sponsor
Elorac, Inc.
Industry
Eligibility
21 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
16
States / cities
Little Rock, Arkansas • Duarte, California • Palo Alto, California + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2022 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Early Phase 1 Interventional Results available

Sensory and Opioid Mechanisms of Affective Touch

NCT03096353
View directory record Official record
Conditions
Pain, Touch
Interventions
Placebo, Naloxone
Other · Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 50 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Sep 11, 2026, 2:22 AM EDT
Not listed Not applicable Interventional

The Impact of a Web-Based Naloxone Intervention Under Standing Orders to Patients Prescribed Chronic Opioid Therapy

NCT03337009
View directory record Official record
Conditions
Overdose, Risk Behavior
Interventions
Naloxone Navigator (NN)
Behavioral
Lead sponsor
Kaiser Permanente
Other
Eligibility
18 Years and older
Enrollment
1,004 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated May 19, 2024 · Synced Sep 11, 2026, 2:22 AM EDT
Recruiting Phase 2 Interventional

Low Dose Naltrexone (LDN) for Management of Fatigue in Prostate Cancer Patients on Androgen Deprivation Therapy (ADT)

NCT07224009
View directory record Official record
Conditions
Metastatic Prostate Cancer
Interventions
Naltrexone
Drug
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years and older · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 11, 2026, 2:22 AM EDT
Not yet recruiting Phase 1Phase 2 Interventional

Axelopran and Nivolumab in PD-1-Refractory Metastatic Melanoma

NCT07631325
View directory record Official record
Conditions
Unresectable Cutaneous Melanoma
Interventions
Axelopran, Nivolumab
Drug
Lead sponsor
John Kirkwood
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 2 Interventional

Entereg Laparoscopic Colon Resection Study

NCT01258569
View directory record Official record
Conditions
Laparoscopic Colonic Resection
Interventions
Entereg, placebo
Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 85 Years
Enrollment
135 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 25, 2015 · Synced Sep 11, 2026, 2:22 AM EDT
Terminated Phase 2 Interventional Results available

Proof-of-Concept Trial of CERC-501 Augmentation of Antidepressant Therapy in Treatment-Resistant Depression

NCT01913535
View directory record Official record
Conditions
Treatment Resistant Depression
Interventions
CERC-501, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
4
States / cities
Chicago, Illinois • Wichita, Kansas • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 4 Interventional

Naltrexone Treatment for Alcoholic Women

NCT00000448
View directory record Official record
Conditions
Alcoholism, Eating Disorder
Interventions
naltrexone, Placebo
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1995 – 2000
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated May 6, 2014 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 4 Interventional Results available

Extended-release Naltrexone and Care Management for Alcohol Dependent Frequent Emergency Department Users

NCT02445339
View directory record Official record
Conditions
Alcohol Dependence, Alcohol Use Disorder
Interventions
XR-NTX+CM (Extended-Release Naltrexone plus Care Management)
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 80 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 10, 2022 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

An Evaluation of The Absolute Bioavailability of TH104

NCT06198686
View directory record Official record
Conditions
Healthy
Interventions
Nalmefene
Drug
Lead sponsor
Tharimmune Inc
Industry
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Apr 7, 2025 · Synced Sep 11, 2026, 2:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Clinical Study to Investigate the Pharmacokinetics of Multiple Repeated Doses of Intranasal Naloxone

NCT04764630
View directory record Official record
Conditions
Healthy Subjects, Opioid Antagonist, Pharmacokinetics
Interventions
Four naloxone nasal spray doses (1 every 2.5 min), Four naloxone nasal spray doses (2 every 2.5 min), Two naloxone nasal spray doses (1 every 2.5 min)
Drug
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 55 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 18, 2024 · Synced Sep 11, 2026, 2:22 AM EDT