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ClinicalTrials.gov public records Last synced Oct 3, 2026, 8:43 PM EDT

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Showing 25–48 of 210 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Morphine or Placebo Clear all
Completed Phase 2 Interventional

Study to Evaluate the Subjective Effects of PTI-801 in Non-Physically Dependent Subjects With a History of Drug Abuse

NCT00734461
View directory record Official record
Conditions
Opioid-Related Disorders
Interventions
oxycodone and naltrexone
Drug
Lead sponsor
Pain Therapeutics
Industry
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 2, 2016 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Dextromethorphan as a Novel Non-opioid Adjunctive Agent for Pain Control in Medication Abortion

NCT03480009
View directory record Official record
Conditions
Abortion in First Trimester
Interventions
Dextromethorphan Hydrobromide, Avicel PH101 (Microcrystalline Cellulose NF) for Compounding, Oxycodone
Drug
Lead sponsor
Study Investigator-Sponsor
Other
Eligibility
18 Years and older · Female only
Enrollment
156 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
2
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 6, 2020 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Not applicable Interventional

Efficacy of Hylenex in the Treatment of Pain Among Hospice Patients

NCT00547664
View directory record Official record
Conditions
Pain Management
Interventions
Hylenex recombinant , morphine, saline, Saline
Drug · Other
Lead sponsor
HPC Healthcare, Inc.
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
3
States / cities
Lakeland, Florida • Tampa, Florida • Temple Terrace, Florida
Source: ClinicalTrials.gov public record
Updated Feb 28, 2014 · Synced Oct 3, 2026, 8:43 PM EDT
Terminated Phase 4 Interventional Results available

Effect of Guanfacine on Opioid-induced Hyperalgesia (OIH) and Tolerance

NCT01681264
View directory record Official record
Conditions
Chronic Pain
Interventions
Morphine, Guanfacine 1mg, Guanfacine 2mg, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 31, 2026 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 3 Interventional Results available

Phase 3 Study of Hydrocodone Bitartrate Controlled-release Capsules in Subjects With Chronic Low Back Pain

NCT01081912
View directory record Official record
Conditions
Back Pain Lower Back Chronic
Interventions
Placebo, Hydrocodone bitartrate
Drug
Lead sponsor
Zogenix, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
510 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
51
States / cities
Phoenix, Arizona • Jonesboro, Arkansas • Anaheim, California + 47 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2022 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Naloxegol on Gastric, Small Bowel, and Colonic Transit in Healthy Subjects

NCT02737059
View directory record Official record
Conditions
Constipation Drug Induced
Interventions
Naloxegol, Codeine, codeine placebo, naloxegol placebo
Drug
Lead sponsor
Michael Camilleri
Other
Eligibility
18 Years to 65 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 3 Interventional Results available

A Research Study of an Investigational Drug ALO-02 (Oxycodone Hydrochloride and Naltrexone Hydrochloride) in Patients With Moderate to Severe Chronic Low Back Pain

NCT01571362
View directory record Official record
Conditions
Chronic Pain, Low Back Pain, Analgesia
Interventions
ALO-02, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
410 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
52
States / cities
Mobile, Alabama • Goodyear, Arizona • Phoenix, Arizona + 38 more
Source: ClinicalTrials.gov public record
Updated Apr 4, 2017 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 3 Interventional Results available

Pain Medicine for Wound Care Procedures

NCT00701909
View directory record Official record
Conditions
Wound Care, Pain Intensity, Hyperalgesia, Nausea, Vomiting, Hallucinations
Interventions
Morphine plus Ketamine, Morphine plus Saline (placebo)
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
21 Years to 65 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 26, 2024 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of Oliceridine (TRV130) for the Treatment of Moderate to Severe Acute Pain After Bunionectomy

NCT02815709
View directory record Official record
Conditions
Acute Pain
Interventions
Oliceridine, Placebo, Morphine
Drug
Lead sponsor
Trevena Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
418 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
7
States / cities
Phoenix, Arizona • Anaheim, California • Pasadena, California + 4 more
Source: ClinicalTrials.gov public record
Updated Sep 25, 2020 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 2 Interventional

Bunionectomy Trial With GRT6005

NCT00872885
View directory record Official record
Conditions
Post Operative Pain
Interventions
GRT6005, Morphine, Placebo
Drug
Lead sponsor
Tris Pharma, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
258 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 15, 2021 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 2 Interventional Results available

A Study of TRV130 for the Treatment of Pain After Abdominoplasty

NCT02335294
View directory record Official record
Conditions
Pain
Interventions
TRV130, Morphine, Placebo
Drug
Lead sponsor
Trevena Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
2
States / cities
Pasadena, California • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 16, 2020 · Synced Oct 3, 2026, 8:43 PM EDT
Not yet recruiting Phase 1Phase 2 Interventional

Mechanistic Evaluation of Polypharmacy Effects for Pain

NCT07846020
View directory record Official record
Conditions
Chronic Lower Back Pain (CLBP)
Interventions
Within-subject test of blinded study medications (Placebo, Hydromorphone, Gabapentin)
Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 65 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2032
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

2 Dose Neuraxial Morphine for Prevention of PDPH

NCT02473276
View directory record Official record
Conditions
Postdural Puncture Headache
Interventions
Morphine, Sterile normal saline
Drug
Lead sponsor
Columbia University
Other
Eligibility
18 Years and older · Female only
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
4
States / cities
Newark, New Jersey • New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 5, 2025 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Early Phase 1 Interventional Results available

Neurobehavioral Mechanisms of Choice in Opioid Use Disorder

NCT03958474
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Oxycodone
Drug
Lead sponsor
Joshua A. Lile, Ph.D.
Other
Eligibility
18 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 2, 2026 · Synced Oct 3, 2026, 8:43 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

The Potential of Oxytocin to Reduce Opioid Abuse Liability and Pain Among Older Adults

NCT05761860
View directory record Official record
Conditions
Pain
Interventions
OxyCODONE 5 mg Oral Tablet, OxyCODONE 2.5 mg Oral Tablet, Placebo oxyCODONE Oral Tablet, Oxytocin Nasal Spray (48 IU), Placebo Oxytocin Nasal Spray
Drug · Other
Lead sponsor
University of Florida
Other
Eligibility
45 Years to 85 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated May 1, 2026 · Synced Oct 3, 2026, 8:43 PM EDT
Recruiting Phase 1Phase 2 Interventional

Opioid Drug Interaction Study

NCT06757140
View directory record Official record
Conditions
Drug Interactions, Drug Kinetics
Interventions
Alprazolam, Oxycodone, Placebo
Drug
Lead sponsor
Shanna Babalonis, PhD
Other
Eligibility
18 Years to 55 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 4 Interventional Results available

Gabapentin for Pain Control After Osmotic Dilator Insertion and Prior to D&E Procedure: a Randomized Controlled Trial

NCT03080493
View directory record Official record
Conditions
Abortion, Induced, Cervical Preparation, Pain
Interventions
Gabapentin 600mg, Placebo oral capsule, acetaminophen/codeine and ibuprofen
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2020 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Non-intrusive Detection of Temporary Neurologic Impairment By Opioids

NCT04223609
View directory record Official record
Conditions
Healthy
Interventions
Oxycodone, Placebo, EyeLink 1000 Plus, Oculo-Cognitive Addition test (OCAT), VT3mini - Eye Tracking Technology for OEMs
Drug · Device · Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
21 Years to 59 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 5, 2023 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 3 Interventional

A Study of Extended-Release Hydrocodone/Acetaminophen (Vicodin CR®) in Subjects With Acute Pain Following Bunionectomy

NCT00402792
View directory record Official record
Conditions
Pain
Interventions
Hydrocodone/Acetaminophen Extended Release, Placebo
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years to 65 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
5
States / cities
Austin, Texas • Houston, Texas • San Antonio, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 25, 2011 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 1 Interventional

Study of the Treatment of Experimental Pain in Opioid Dependent Persons on Methadone or Buprenorphine Maintenance

NCT01642030
View directory record Official record
Conditions
Opioid Dependence, Pain, Addiction
Interventions
Placebo, Hydromorphone, Buprenorphine
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 55 Years
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 11, 2017 · Synced Oct 3, 2026, 8:43 PM EDT
Terminated Phase 1 Interventional

Acute Pain Management in Patients on Opioid Replacement Therapy

NCT03933865
View directory record Official record
Conditions
Opioid-use Disorder, Pain, Acute
Interventions
HYDROmorphone Injectable Solution, Ketamine, Placebos
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 60 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Oct 10, 2022 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 3 Interventional Results available

Perioperative Methadone Use to Decrease Opioid Requirement in Pediatric Spinal Fusion Patients

NCT02558010
View directory record Official record
Conditions
Scoliosis, Pain
Interventions
Methadone, Normal Saline, Morphine
Drug · Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
10 Years to 18 Years
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Nov 18, 2023 · Synced Oct 3, 2026, 8:43 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Drug Drug Interaction Study With Gabapentin Enacarbil and Morphine

NCT01476124
View directory record Official record
Conditions
Restless Legs Syndrome
Interventions
morphine Placebo, GEn 600 mg, Morphine, GEn Placebo
Drug
Lead sponsor
XenoPort, Inc.
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 16, 2013 · Synced Oct 3, 2026, 8:43 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Study to Assess Dopamine Receptor Modulation With Rotigotine to Enhance Morphine Analgesia in the Dental Model

NCT02123979
View directory record Official record
Conditions
Post-op Pain
Interventions
Neupro® transdermal patch/placebo
Drug
Lead sponsor
East Carolina University
Other
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Greenville, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 7, 2015 · Synced Oct 3, 2026, 8:43 PM EDT