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ClinicalTrials.gov public records Last synced Oct 9, 2026, 5:21 AM EDT

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Showing 169–192 of 210 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Morphine or Placebo Clear all
Completed Phase 4 Interventional Results available

Hormone Function in Men Treated for Pain With Opioids or Placebo

NCT00737737
View directory record Official record
Conditions
Chronic Pain, Osteoarthritis
Interventions
MS Contin, Placebo
Drug
Lead sponsor
National Institute of Nursing Research (NINR)
NIH
Eligibility
30 Years to 65 Years · Male only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 2 Interventional Results available

Celecoxib After Tonsillectomy

NCT02934191
View directory record Official record
Conditions
Tonsillectomy
Interventions
Celecoxib, Placebo, Acetaminophen, Oxycodone
Drug · Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
3 Years to 11 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 10, 2020 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 3 Interventional Results available

Blinded Trial of Buprenorphine or Morphine in the Treatment of the Neonatal Abstinence Syndrome

NCT01452789
View directory record Official record
Conditions
Neonatal Abstinence Syndrome
Interventions
sublingual buprenorphine, oral morphine
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
Not listed
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 24, 2020 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 4 Interventional Results available

Effect of Combined Morphine and Duloxetine on Chronic Pain

NCT03249558
View directory record Official record
Conditions
Chronic Low Back Pain, Chronic Neck Pain
Interventions
Morphine, Duloxetine, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 14, 2024 · Synced Oct 9, 2026, 5:21 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

Evaluation of the Safety and Effects of Psychoactive Substances in People With Past Opioid Use

NCT07218549
View directory record Official record
Conditions
Opioid Use, Substance Use Disorders, Opioid Analgesia
Interventions
Placebo, Oxycodone HCl, Kratom 8g, Kratom 12g, Kratom 16g, Kratom 4g
Drug
Lead sponsor
Christopher D. Verrico
Other
Eligibility
18 Years to 55 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 9, 2026, 5:21 AM 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 23, 2016 · Synced Oct 9, 2026, 5:21 AM EDT
Terminated Phase 4 Interventional Results available

Measuring Gait And Self-Reported Pain In Patients With Osteoarthritis Of The Knee Using Placebo/Oxycodone/Celecoxib.

NCT00484718
View directory record Official record
Conditions
Osteoarthritis
Interventions
celecoxib, Oxycodone, placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
40 Years to 70 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
2
States / cities
Palo Alto, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2021 · Synced Oct 9, 2026, 5:21 AM EDT
Recruiting Phase 2 Interventional

Celecoxib for ENT Pain Management

NCT06505187
View directory record Official record
Conditions
Parotidectomy
Interventions
Celecoxib, Tylenol, Oxycodone, placebo
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Reduction in Pain Intensity Following IV or Oral Pain-relieving Products

NCT02678416
View directory record Official record
Conditions
Pain
Interventions
IV Acetaminophen (Treatment A), Oral Acetaminophen (Treatment B), Placebo (Treatment C), Morphine (Treatment D)
Drug · Other
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Not applicable Interventional Results available

Efficacy of Oral Versus Intravenous Acetaminophen for Primary Pediatric Cleft Palate Repair

NCT01500109
View directory record Official record
Conditions
Cleft Palate
Interventions
Oral acetaminophen, Ofirmev®, Opioid only
Drug
Lead sponsor
Loma Linda University
Other
Eligibility
5 Months to 5 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jun 9, 2021 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Assessment of Abuse Potential of Cebranopadol in Humans

NCT05256108
View directory record Official record
Conditions
Human Abuse Potential
Interventions
Oxycodone 40 mg, Tramadol 600 mg, Placebo, Cebranopadol 600 µg, Cebranopadol 1000 µg
Drug
Lead sponsor
Tris Pharma, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 27, 2022 · Synced Oct 9, 2026, 5:21 AM 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 9, 2026, 5:21 AM EDT
Terminated Phase 2 Interventional Results available

Biased Opioid Agonists for Treatment of Opioid Withdrawal in OUD

NCT04316559
View directory record Official record
Conditions
Opioid-Use Disorder
Interventions
Placebo, TRV734, Oxycodone
Other · Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
18 Years to 75 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 3 Interventional

Efficacy and Safety of Intranasal Morphine for Pain After Elective Orthopedic Surgery

NCT00390039
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Intranasal morphine, Placebo, IV morphine
Drug
Lead sponsor
Javelin Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
256 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
7
States / cities
Phoenix, Arizona • Bakersfield, California • State College, Pennsylvania + 3 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2008 · Synced Oct 9, 2026, 5:21 AM EDT
Terminated Phase 2 Interventional

A 2 Week Blinded Study For Pain Due To Arthritis Of The Knee

NCT00483977
View directory record Official record
Conditions
Osteoarthritis
Interventions
Oxycodone, Placebo, PF-000592379
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
21
States / cities
Mobile, Alabama • Tucson, Arizona • Carmichael, California + 17 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2011 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 3 Interventional

Herniorrhaphy for Postoperative Pain

NCT05813847
View directory record Official record
Conditions
Hernia, Inguinal, Post Operative Pain
Interventions
local anaesthetic injection of CPL-01, Morphine (rescue medication), Acetaminophen (rescue medication), Oxycodone (rescue medication), local anaesthetic injection of placebo, local anaesthetic injection of ropivacaine HCl, Open inguinal hernia repair
Drug · Procedure
Lead sponsor
Cali Pharmaceuticals LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
518 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 1Phase 2 Interventional Results available

The Discriminative Effects of Tramadol in Humans

NCT00499746
View directory record Official record
Conditions
Opioid Abuse, Opioid Addiction, Stimulant Abuse, Stimulant Addiction
Interventions
tramadol, placebo, Hydromorphone, Methylphenidate
Drug
Lead sponsor
National Institute on Drug Abuse (NIDA)
NIH
Eligibility
21 Months to 55 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 17, 2017 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 3 Interventional

Efficacy and Safety of Q8003 in the Management of Post-bunionectomy Pain

NCT00560183
View directory record Official record
Conditions
Postoperative Pain
Interventions
Q8003 (morphine sulfate and oxycodone hydrochloride), Placebo
Drug
Lead sponsor
QRxPharma Inc.
Industry
Eligibility
18 Years and older
Enrollment
256 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
6
States / cities
Anaheim, California • Pasadena, Maryland • Altoona, Pennsylvania + 2 more
Source: ClinicalTrials.gov public record
Updated May 17, 2012 · Synced Oct 9, 2026, 5:21 AM 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 9, 2026, 5:21 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Breakthrough Dyspnea Fentanyl Study in Cancer Patients

NCT01515566
View directory record Official record
Conditions
Advanced Cancers, Dyspnea
Interventions
Fentanyl, Placebo, Walking Tests, Questionnaires
Drug · Other · Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 22, 2014 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety Study Evaluating ADL5859 and ADL5747 in Participants With Pain Due to Osteoarthritis of the Knee

NCT00979953
View directory record Official record
Conditions
Osteoarthritis of the Knee
Interventions
ADL5859, ADL5747, Oxycodone CR, Placebo
Drug
Lead sponsor
Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years to 75 Years
Enrollment
408 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
11
States / cities
Daytona Beach, Florida • Stockbridge, Georgia • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 14, 2015 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

A Study to Assess the Effect of AZD4041 on Respiratory Drive in Recreational Opioid Users.

NCT05587998
View directory record Official record
Conditions
Opioid Use Disorder
Interventions
Morphine, AZD4041, Placebo
Drug · Other
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Nov 15, 2024 · Synced Oct 9, 2026, 5:21 AM EDT
Not listed Phase 3 Interventional

Femoral Nerve Block Compared to Exparel in Total Knee Replacement

NCT02473198
View directory record Official record
Conditions
Osteoarthritis, Pain
Interventions
Exparel, Femoral Nerve Block Bupivacaine, Toradol, Morphine Sulfate
Drug
Lead sponsor
The New England Baptist Hospital
Other
Eligibility
18 Years to 73 Years
Enrollment
312 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 17, 2016 · Synced Oct 9, 2026, 5:21 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Clinical Study to Evaluate Cannabidiol Liver Enzyme Elevations and Drug Interactions

NCT06192589
View directory record Official record
Conditions
Cannabidiol, Drug Induced Liver Injury, Drug Interaction
Interventions
Cannabidiol, Placebo, Citalopram, Morphine
Drug
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 55 Years
Enrollment
241 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 31, 2025 · Synced Oct 9, 2026, 5:21 AM EDT