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Showing 1–24 of 129 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo Oxycodone Clear all
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 1, 2026, 9:50 PM EDT
Completed Phase 3 Interventional

A Study to Evaluate Withdrawal Effects Following Dosing of Oxycodone/Naltrexone in Methadone-Maintained Subjects

NCT02391571
View directory record Official record
Conditions
Withdrawal Symptoms
Interventions
Oxycodone/Naltrexone Capsules, Oxycodone, Placebo
Drug
Lead sponsor
Elite Laboratories, Inc
Industry
Eligibility
18 Years to 55 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 9, 2016 · Synced Sep 1, 2026, 9:50 PM EDT
Recruiting Phase 2 Interventional

Pain Relief After Trapeziectomy: Ibuprofen & Acetaminophen Versus Oxycodone

NCT04676802
View directory record Official record
Conditions
Pain, Postoperative, Osteoarthritis Thumb
Interventions
NSAID capsules, Opioid capsule
Drug
Lead sponsor
Stanford University
Other
Eligibility
45 Years and older
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
2
States / cities
Redwood City, California • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Results available

Effect of Perioperative Gabapentin on Postoperative Opioid Requirements

NCT05494385
View directory record Official record
Conditions
Postoperative Pain
Interventions
Preoperative Gabapentin/Postoperative Placebo, Preoperative Gabapentin/Postoperative Gabapentin
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older · Female only
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Oct 22, 2024 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Cannabis Versus Oxycodone for Pain Relief

NCT02892591
View directory record Official record
Conditions
Back Pain, Neck Pain
Interventions
Cannabis, Oxycodone, Placebo for Cannabis, Placebo for Oxycodone
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
21 Years and older
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2023
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 21, 2024 · Synced Sep 1, 2026, 9:50 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 1, 2026, 9:50 PM 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 1, 2026, 9:50 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Study of the Relative Abuse Potential of Acurox Tablets in Non-Dependent Recreational Opioid Users

NCT01030406
View directory record Official record
Conditions
Opioid Abuse
Interventions
40/0mg taken first, 80/0mg taken first, 40/240mg taken first, 80/480mg taken first, 0/0mg taken first
Drug
Lead sponsor
Acura Pharmaceuticals Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Oct 31, 2018 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 1 Interventional Results available

Opioid and Cannabinoid Interactions

NCT03705559
View directory record Official record
Conditions
Marijuana Usage, Opioid Use
Interventions
Vaporized Marijuana, Opioid Agonist, Placebo
Drug
Lead sponsor
Shanna Babalonis, PhD
Other
Eligibility
18 Years to 50 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Apr 9, 2025 · Synced Sep 1, 2026, 9:50 PM EDT
Terminated Phase 4 Interventional Results available

Trial of Analgesia With Lidocaine or Extended-release Oxycodone for Neuropathic Pain Treatment in Multiple Sclerosis

NCT00414453
View directory record Official record
Conditions
Neuropathic Pain, Chronic Pain, Multiple Sclerosis
Interventions
Lidocaine patch 5%, Extended-release oxycodone, Placebo extended-release oxycodone pills, Placebo lidocaine patches
Drug
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Jul 16, 2015 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of COV795 in Moderate to Severe Post-Operative Bunionectomy Pain With an Open-label Extension

NCT01484652
View directory record Official record
Conditions
Pain, Postoperative, Bunion
Interventions
COV795, Placebo
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 75 Years
Enrollment
329 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
5
States / cities
Bakersfield, California • Pasadena, California • Pasadena, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Results available

Study to Collect Information on How Well the Study Drug Naproxen Sodium Tablets Works Compared to Hydrocodone/Acetaminophen Tablets in Order to Relieve Pain in Participants Experiencing Moderate to Severe Pain After Having Their Wisdom Teeth Removed

NCT04307940
View directory record Official record
Conditions
Pain
Interventions
Naproxen Sodium (Aleve, BAY117031), Hydrocodone/Acetaminophen, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 40 Years
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 13, 2022 · Synced Sep 1, 2026, 9:50 PM EDT
Not yet 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 Jul 29, 2026 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 3 Interventional

A Study to Evaluate Safety and Efficacy Following Dosing of Oxycodone/Naltrexone for Treatment of Adults With Pain Following Bunionectomy Surgery

NCT02401750
View directory record Official record
Conditions
Pain
Interventions
Oxycodone Naltrexone (a), Oxycodone Naltrexone (b), Placebo
Drug
Lead sponsor
Elite Laboratories, Inc
Industry
Eligibility
18 Years to 75 Years
Enrollment
163 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
5
States / cities
Phoenix, Arizona • Pasadena, Maryland • Austin, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 8, 2016 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Reducing the Abuse Liability of Prescription Opioids

NCT04587115
View directory record Official record
Conditions
Addiction
Interventions
Risperidone, Ziprasidone, Oxycodone
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
21 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 13, 2020 · Synced Sep 1, 2026, 9:50 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 3, 2017 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Results available

Low-Dose Opiate Therapy for Discomfort in Dementia (L-DOT)

NCT00385684
View directory record Official record
Conditions
Alzheimer Disease, Dementia, Dementia, Vascular, Pain
Interventions
hydrocodone/APAP w placebo PRN, hydrocodone/APAP, placebo with hydrocodone/APAP PRN
Drug
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
55 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2014
U.S. locations
3
States / cities
Tuscaloosa, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 19, 2015 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Hallucinogens and Other Drugs on Mood and Performance

NCT02033707
View directory record Official record
Conditions
Healthy
Interventions
Hallucinogens and psychoactive substances
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated May 15, 2019 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Safety, Tolerability, PD and PK Study in Healthy Adults

NCT02211625
View directory record Official record
Conditions
Healthy
Interventions
Open-label TRV734 125 mg, TRV734 blinded, Oxycodone IR 10 mg, Placebo
Drug
Lead sponsor
Trevena Inc.
Industry
Eligibility
18 Years to 64 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Dec 4, 2014 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Results available

Hydrocodone For Pain Control in First Trimester Surgical Abortion

NCT01330459
View directory record Official record
Conditions
Pain
Interventions
Hydrocodone/acetaminophen, Placebo, Ibuprofen, Lorazepam, Lidocaine
Drug
Lead sponsor
Elizabeth Micks
Other
Eligibility
18 Years to 65 Years · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
2
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 25, 2019 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 4 Interventional Results available

Oral Sedation During Cervical Dilator Placement

NCT03202550
View directory record Official record
Conditions
Oral Sedation and Cervical Dilator Pain
Interventions
Oxycodone and Lorazepam (Active Comparator), Placebo Comparator
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 29, 2020 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 3 Interventional

Efficacy and Safety of Egalet-002 in Patients With Moderate-to-Severe Chronic Low Back Pain

NCT02716857
View directory record Official record
Conditions
Moderate-to-severe Chronic Low Back Pain
Interventions
Oxycodone extended-release, Placebo of oxycodone extended-release
Drug
Lead sponsor
Egalet Ltd
Industry
Eligibility
18 Years to 75 Years
Enrollment
549 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
74
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 65 more
Source: ClinicalTrials.gov public record
Updated Mar 4, 2018 · Synced Sep 1, 2026, 9:50 PM EDT
Terminated Phase 3 Interventional Results available

Ibuprofen to Decrease Opioid Use and Post-operative Pain Following Unilateral Inguinal Herniorrhaphy

NCT02929589
View directory record Official record
Conditions
Pain, Hernia
Interventions
Ibuprofen, Opioid Medication, Placebo, Ibuprofen + Opioid medication
Drug
Lead sponsor
Mike O'Callaghan Military Hospital
Federal
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Nellis Air Force Base, Nevada
Source: ClinicalTrials.gov public record
Updated Mar 25, 2024 · Synced Sep 1, 2026, 9:50 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Pioglitazone, a PPARgamma Receptor Agonist, on the Abuse Liability of Oxycodone

NCT01395784
View directory record Official record
Conditions
Opioid Abuse
Interventions
pioglitazone
Drug
Lead sponsor
New York State Psychiatric Institute
Other
Eligibility
21 Years to 45 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 22, 2016 · Synced Sep 1, 2026, 9:50 PM EDT