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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 3 Interventional Results available

A Study of Embeda (Kadian NT, ALO-01) in Subjects With Pain Due to Osteoarthritis of the Hip or Knee

NCT00420992
View directory record Official record
Conditions
Osteoarthritis, Chronic Pain
Interventions
ALO-01 (Morphine Sulfate Plus Naltrexone Hydrochloride Extended Release), Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
21 Years and older
Enrollment
547 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
81
States / cities
Birmingham, Alabama • Mobile, Alabama • Peoria, Arizona + 69 more
Source: ClinicalTrials.gov public record
Updated Sep 19, 2013 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 2 Interventional Results available

Buprenorphine's Dose Response Curve

NCT00460239
View directory record Official record
Conditions
Opioid-related Disorders
Interventions
Buprenorphine, Morphine, Placebo
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 55 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 2, 2017 · Synced Sep 25, 2026, 11:58 PM EDT
Terminated Not applicable Interventional Results available

Methadone, Morphine, or Oxycodone in Treating Pain in Patients With Cancer

NCT00726830
View directory record Official record
Conditions
Brain and Central Nervous System Tumors, Chronic Myeloproliferative Disorders, Leukemia, Lymphoma, Lymphoproliferative Disorder, Multiple Myeloma and Plasma Cell Neoplasm, Myelodysplastic Syndromes, Myelodysplastic/Myeloproliferative Neoplasms, Pain, Precancerous Condition, Unspecified Adult Solid Tumor, Protocol Specific
Interventions
methadone hydrochloride, morphine sulfate, oxycodone hydrochloride
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
2
States / cities
Spartanburg, South Carolina • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 23, 2020 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 3 Interventional Results available

Opioid Prescription After Cesarean Trial

NCT04296396
View directory record Official record
Conditions
Pregnancy Related, Opioid Use, Pain
Interventions
0 to 20 tablets of oxycodone 5mg, Fixed opioid prescription
Drug
Lead sponsor
The George Washington University Biostatistics Center
Other
Eligibility
Female only
Enrollment
5,521 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
12
States / cities
Birmingham, Alabama • Chicago, Illinois • New York, New York + 9 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2023 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Study Evaluating the Abuse Potential of NEURONTIN® in Healthy Non-drug Dependent, Recreational Opioid Users

NCT05319756
View directory record Official record
Conditions
Abuse Potential
Interventions
gabapentin 600 mg, gabapentin 1200 mg, gabapentin 600 mg and oxycodone HCl 20 mg, gabapentin 1200 mg and oxycodone HCl 20 mg, oxycodone HCl 20 mg, placebo
Drug
Lead sponsor
Viatris Specialty LLC
Industry
Eligibility
18 Years to 55 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Marlton, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 13, 2023 · Synced Sep 25, 2026, 11:58 PM 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 25, 2026, 11:58 PM EDT
Not listed Phase 4 Interventional

Pain Relief After Hiatal Hernia Repair Surgery

NCT04936711
View directory record Official record
Conditions
Shoulder Pain, Hiatal Hernia
Interventions
Resteck Shiatsu Neck and Back Massager, Marcaine
Device · Drug
Lead sponsor
Norton Thoracic Institute
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 22, 2021 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Not applicable Interventional Results available

5HT3 Antagonists to Treat Opioid Withdrawal and to Prevent the Progression of Physical Dependence

NCT01549652
View directory record Official record
Conditions
Opioid Withdrawal, Physical Dependence
Interventions
Ondansetron, Placebo, Morphine, Naloxone 0.4 mg/70 kg, Naloxone 0.8 mg/70 kg
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 60 Years
Enrollment
133 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Jan 6, 2019 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Assess the Abuse Potential of Hydrocodone Extended-Release Tablet in Recreational Opioid Users

NCT01596673
View directory record Official record
Conditions
Drug Abuse
Interventions
45-mg hydrocodone bitartrate extended-release tablet (crushed or intact), Placebo
Drug
Lead sponsor
Cephalon
Industry
Eligibility
18 Years to 50 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Nov 20, 2012 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 2 Interventional

A Study Of The Effectiveness Of Wafermine Alone And In Combination With Opioids In Subjects Undergoing Bunionectomy

NCT02541396
View directory record Official record
Conditions
Acute Pain
Interventions
Wafermine, Oxycodone, Placebo
Drug
Lead sponsor
iX Biopharma Ltd.
Other
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 22, 2016 · Synced Sep 25, 2026, 11:58 PM EDT
Withdrawn Phase 4 Interventional

A Study Comparing Recurrent Use of MSIR, Percocet, and Vicodin at Discharge From the ED

NCT03529331
View directory record Official record
Conditions
Pain
Interventions
Morphine Sulfate Immediate Release, Oxycodone/Acetaminophen, Hydrocodone/Acetaminophen
Drug
Lead sponsor
Antonios Likourezos
Other
Eligibility
18 Years to 120 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Apr 22, 2019 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 3 Interventional Results available

A Trial to Evaluate CG5503 Efficacy and Safety in Acute Pain After Bunionectomy

NCT00609466
View directory record Official record
Conditions
Bunionectomy, Pain, Postoperative Pain, Acute Pain
Interventions
CG5503 IR, Morphine, Placebo
Drug
Lead sponsor
Grünenthal GmbH
Industry
Eligibility
18 Years to 80 Years
Enrollment
291 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
6
States / cities
Pasadena, Maryland • Austin, Texas • Houston, Texas + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 15, 2011 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 1 Interventional

Sensory Effects of Oral Opioid Treatment in Patients With Chronic Low Back Pain

NCT02824276
View directory record Official record
Conditions
Low Back Pain
Interventions
Oxycodone or morphine sulfate immediate release (MSIR), Placebo Treatment
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
25 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 3, 2026 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Not applicable Interventional Results available

Reduced Opioid Analgesic Requirements Via Improved Endogenous Opioid Function

NCT02469077
View directory record Official record
Conditions
Chronic Pain
Interventions
6 week aerobic exercise intervention, Placebo, Morphine, naloxone
Behavioral · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 55 Years
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
2
States / cities
Chicago, Illinois • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 22, 2020 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 3 Interventional

Comparison of the Safety of Q8003 Versus Morphine Equivalent Doses of Its Components (Oxycodone and Morphine) in Bunionectomy Patients

NCT01280331
View directory record Official record
Conditions
Postoperative Pain
Interventions
Q8003 (morphine sulfate and oxycodone hydrochloride), Morphine sulfate, Oxycodone HCl
Drug
Lead sponsor
QRxPharma Inc.
Industry
Eligibility
18 Years and older
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
4
States / cities
Anaheim, California • Owings Mills, Maryland • Pasadena, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated May 16, 2012 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effects of Garlic Supplements on Opioids in Healthy Volunteers

NCT00499460
View directory record Official record
Conditions
Healthy, No Evidence of Disease
Interventions
garlic powder tablets, oxycodone
Dietary Supplement · Drug
Lead sponsor
Fred Hutchinson Cancer Center
Other
Eligibility
21 Years to 45 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 3 Interventional Results available

Choosing Opioid Management for Pain and Analyzing Acute Chest Syndrome (ACS) Rates Equally

NCT01380197
View directory record Official record
Conditions
Pain, Sickle Cell Disease
Interventions
Morphine, Nubain
Drug
Lead sponsor
Children's Healthcare of Atlanta
Other
Eligibility
6 Years to 19 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Feb 19, 2018 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Dexmedetomidine in the Treatment of Symptoms Of Acute Opioid Withdrawal

NCT04470050
View directory record Official record
Conditions
Opioid Withdrawal
Interventions
Dexmedetomidine, Placebo
Drug
Lead sponsor
BioXcel Therapeutics Inc
Industry
Eligibility
18 Years to 65 Years
Enrollment
225 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
3
States / cities
Miami Lakes, Florida • Marlton, New Jersey • New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 10, 2026 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of the Abuse Liability Potential of Samidorphan in Healthy, Non-Dependent, Recreational Opioid Users

NCT02218021
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Samidorphan, Placebo, Oxycodone
Drug
Lead sponsor
Alkermes, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Dec 1, 2014 · Synced Sep 25, 2026, 11:58 PM EDT
Terminated Phase 3 Interventional Results available

Comparing Individualized vs. Weight Based Protocols to Treat Vaso-Occlusive Episodes in Sickle Cell Disease

NCT03933397
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Patient-Specific Protocol, Weight-based Protocol, Morphine, Hydromorphone
Other · Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older
Enrollment
328 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
6
States / cities
Baltimore, Maryland • Detroit, Michigan • Charlotte, North Carolina + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 2, 2023 · Synced Sep 25, 2026, 11:58 PM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Cannabidiol, Morphine, Pain

NCT04030442
View directory record Official record
Conditions
CBD, Chronic Pain
Interventions
Immediate-release Oral Morphine Sulfate Tablets, Thermal and Pressure Nociceptive Sensitivity
Drug · Other
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 55 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Sep 25, 2026, 11:58 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Reduced Opioid Prescription After Laparoscopic Hysterectomy

NCT05548582
View directory record Official record
Conditions
Pain, Postoperative, Opioid Misuse, Opioid Use, Pain
Interventions
OxyCODONE 5 mg Oral Tablet, Acetaminophen 500 mg Tab, Ibuprofen 600 mg
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Sep 25, 2026, 11:58 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Single Dose Crossover Study to Compare the Respiratory Drive After Administration of Belbuca, Oxycodone and Placebo.

NCT03996694
View directory record Official record
Conditions
Respiratory Depression
Interventions
Belbuca 300 µg, Belbuca 600 µg, Belbuca 900 µg, Oxycodone 30 mg, Oxycodone 60 mg, Placebo
Drug
Lead sponsor
BioDelivery Sciences International
Industry
Eligibility
18 Years to 55 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 4, 2021 · Synced Sep 25, 2026, 11:58 PM EDT
Not yet recruiting Phase 4 Interventional

Suzetrigine for Opioid-Sparing Postoperative Analgesia Following Transvaginal Pelvic Reconstructive Surgery

NCT07600697
View directory record Official record
Conditions
Pelvic Organ Prolapse (POP), Stress Urinary Incontinence (SUI), Postoperative Pain
Interventions
Suzetrigine, Opioid Analgesics (Tramadol or Oxycodone), Scheduled Acetaminophen and Ibuprofen
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Sep 25, 2026, 11:58 PM EDT