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Showing 1–24 of 198 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Analgesics, Opioid Clear all
Recruiting Phase 4 Interventional

Comparing Analgesic Regimen Effectiveness and Safety for Surgery (CARES) Trial

NCT05722002
View directory record Official record
Conditions
Surgery, Pain, Postoperative
Interventions
NSAID, Opioid, Acetaminophen
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
6
States / cities
Ann Arbor, Michigan • Detroit, Michigan • St Louis, Missouri + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 22, 2026, 6:00 PM EDT
Completed No phase listed Observational

Incidence and Predictors of Opioid Overdose and Death Among Long-Term Users of Opioid Analgesics

NCT02662153
View directory record Official record
Conditions
Opioid Overdose
Interventions
Observation only
Other
Lead sponsor
Member Companies of the Opioid PMR Consortium
Industry
Eligibility
18 Years to 79 Years
Enrollment
808,455 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
4
States / cities
Wilmington, Delaware • Boston, Massachusetts • Portland, Oregon + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2022 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 3 Interventional Results available

Study of Post-Herniorrhaphy Non-opioid MMA Regimens

NCT03907176
View directory record Official record
Conditions
Analgesia
Interventions
HTX-011, Luer lock applicator, Ibuprofen, Acetaminophen
Drug · Device
Lead sponsor
Heron Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
209 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
30
States / cities
Anaheim, California • La Mesa, California • Orange, California + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 22, 2026, 6:00 PM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

Investigating the Analgesic Potential of (2R,6R)-HNK in Acute Pain in Healthy Volunteers

NCT07504601
View directory record Official record
Conditions
Healthy Volunteers
Interventions
(2R,6R)-Hydroxynorketamine, Placebo
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 60 Years
Enrollment
92 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2031
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 4 Interventional Results available

Pain Response Evaluation of a Combined Intervention to Cope Effectively

NCT04395001
View directory record Official record
Conditions
Chronic Pain
Interventions
duloxetine, Web-based Cognitive Behavioral Therapy (CBT), Nurse-delivered Motivational Interviewing
Drug · Behavioral · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 65 Years
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 9, 2025 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 3 Interventional Results available

Long-term Open-Label Safety Study to Evaluate EN3409

NCT01755546
View directory record Official record
Conditions
Low Back Pain, Osteoarthritis, Neuropathic Pain
Interventions
EN3409
Drug
Lead sponsor
BioDelivery Sciences International
Industry
Eligibility
18 Years and older
Enrollment
304 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
57
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 52 more
Source: ClinicalTrials.gov public record
Updated Oct 17, 2018 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Not applicable Interventional Results available

Study of Opioid Use After Lumbar and Cervical Spine Surgery

NCT02674711
View directory record Official record
Conditions
Low Back Pain, Opiate Addiction, Neck Pain
Interventions
Educational Video
Behavioral
Lead sponsor
Brooke Army Medical Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated May 18, 2023 · Synced Sep 22, 2026, 6:00 PM EDT
Terminated Not applicable Interventional Results available

Pulsed Radiofrequency Energy to Treat Post-Bunionectomy Pain

NCT01694199
View directory record Official record
Conditions
Post-operative Pain
Interventions
Pulsed Radiofrequency Energy (PRFE), No Pulsed Radiofrequency Energy (PRFE)
Device
Lead sponsor
Regenesis Biomedical, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
3
States / cities
Pasadena, California • Pasadena, Maryland • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated May 1, 2017 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Not applicable Interventional Results available

EMPOWER: Randomized Trial of Online Chronic Pain Management Program to Reduce Reliance on Opioid Analgesic Medications

NCT03308188
View directory record Official record
Conditions
Chronic Pain
Interventions
E-health program
Behavioral
Lead sponsor
University of Cincinnati
Other
Eligibility
25 Years to 80 Years
Enrollment
402 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
2
States / cities
Durham, North Carolina • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 27, 2023 · Synced Sep 22, 2026, 6:00 PM EDT
Recruiting Phase 1Phase 2 Interventional

(2R,6R)-Hydroxynorketamine for the Treatment of Neuropathic Pain

NCT05864053
View directory record Official record
Conditions
Pain, Neuropathic
Interventions
Ketamine, (2R,6R)-hydroxynorketamine, Saline
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 75 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 2, 2026 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Not applicable Interventional Results available

Strategies for Prescribing Analgesics Comparative Effectiveness Trial

NCT01583985
View directory record Official record
Conditions
Back Pain, Osteoarthritis
Interventions
Opioid-intensive prescribing strategy, Opioid-avoidant prescribing strategy
Other
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
265 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 5, 2019 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 2 Interventional Results available

Effectiveness of an Opioid Sparing Pain Regimen in Cardiac Surgery

NCT03679013
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Oral Gabapentin and Intravenous Acetaminophen (IV APAP), Opiate based pain regimen.
Drug
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years to 85 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 2 Interventional Results available

A Phase 2 Study to Evaluate Analgesic Effect of IV CR845 For Pain Following Bunionectomy Surgery

NCT01789476
View directory record Official record
Conditions
Acute Pain
Interventions
CR845, Placebo
Drug
Lead sponsor
Cara Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 3 Interventional Results available

A Phase 3 Efficacy and Safety Study of Intra-articular CNTX-4975-05 (Capsaicin) vs Placebo in Subjects With OA Knee Pain

NCT03429049
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
CNTX-4975-05, Placebo
Drug
Lead sponsor
Centrexion Therapeutics
Industry
Eligibility
40 Years to 95 Years
Enrollment
332 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
33
States / cities
Birmingham, Alabama • Mobile, Alabama • Tucson, Arizona + 28 more
Source: ClinicalTrials.gov public record
Updated Jul 25, 2022 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Opioid Analgesic Reduction Study (OARS) - Pilot

NCT05283499
View directory record Official record
Conditions
Post Operative Pain
Interventions
OPIOID, NON-OPIOID
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 99 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
5
States / cities
Chicago, Illinois • Baltimore, Maryland • Ann Arbor, Michigan + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2023 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 3 Interventional Results available

Efficacy Study to Evaluate Buprenorphine HCl Buccal Film in Opioid-Naive Subjects

NCT01633944
View directory record Official record
Conditions
Low Back Pain
Interventions
Buprenorphine, Placebo
Drug
Lead sponsor
BioDelivery Sciences International
Industry
Eligibility
18 Years and older
Enrollment
752 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
60
States / cities
Mobile, Alabama • Phoenix, Arizona • Anaheim, California + 51 more
Source: ClinicalTrials.gov public record
Updated Feb 26, 2017 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 4 Interventional Results available

The Impact of Sublingual Sufentanil on Postoperative Pain and Analgesic Requirements in Spine Surgery Patients

NCT04263909
View directory record Official record
Conditions
Spine Fusion, Pain, Postoperative, Opioid Use
Interventions
Sublingual Tablet
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 85 Years
Enrollment
199 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 29, 2025 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 2 Interventional

Analgesic Efficacy and Safety of ADL5859 in Subjects With Acute Dental Pain After Third Molar Extraction

NCT00993863
View directory record Official record
Conditions
Acute Pain
Interventions
Placebo, ADL5859 30 mg, ADL5859 100 mg, ADL5859 200 mg, ibuprofen 400 mg
Drug
Lead sponsor
Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years to 50 Years
Enrollment
201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 16, 2015 · Synced Sep 22, 2026, 6:00 PM EDT
Active, not recruiting No phase listed Observational

Developing a Method to Objectively Measure Opioid Analgesia

NCT03605966
View directory record Official record
Conditions
Analgesics, Antipyretics and Anti-Inflammatory Drugs Causing Adverse Effects in Therapeutic Use
Interventions
Not listed
Lead sponsor
Julia Finkel
Other
Eligibility
7 Years to 21 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Apr 5, 2026 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Not applicable Interventional Results available

De-Implementing Opioids for Dental Extractions

NCT03584789
View directory record Official record
Conditions
Tooth Extraction
Interventions
Clinical Decision Support, Patient education
Other
Lead sponsor
HealthPartners Institute
Other
Eligibility
16 Years and older
Enrollment
5,722 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Bloomington, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 29, 2022 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Phase 4 Interventional

Minimizing Narcotic Analgesics After Endocrine Surgery

NCT03469310
View directory record Official record
Conditions
Thyroid Cancer, Thyroid Nodule, Thyroid Neoplasms, Thyroid Goitre, Thyroid Diseases, Parathyroid Diseases, Parathyroid Adenoma, Parathyroid Hyperplasia
Interventions
Acetaminophen 500Mg Cap, Tylenol #3 Oral Tablet, Tramadol
Drug
Lead sponsor
Minerva A Romero Arenas
Other
Eligibility
18 Years and older
Enrollment
126 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Edinburg, Texas
Source: ClinicalTrials.gov public record
Updated May 10, 2021 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Not applicable Interventional

Does Preoperative Pain Medication Management Influence Surgical Outcomes in Spinal Fusion

NCT04095624
View directory record Official record
Conditions
Opioid Use, Spine Fusion
Interventions
Spinal Fusion Preoperative Opioid Taper, Non-taper Control
Behavioral · Other
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Apr 10, 2025 · Synced Sep 22, 2026, 6:00 PM EDT
Completed Not applicable Interventional

Telehealth Delivered Physical Rehabilitation for an Ankle Sprain

NCT04520854
View directory record Official record
Conditions
Ankle Sprains, Telerehabilitation, Analgesic, Opioid, Analgesics, Non-narcotic, Anti-Inflammatory Agents, Non-Steroidal, Implementation Science, Acute Pain, Quality of Life
Interventions
Telehealth Protocol, Usual Care
Other
Lead sponsor
Kyle Kosik
Other
Eligibility
15 Years to 35 Years
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jul 27, 2025 · Synced Sep 22, 2026, 6:00 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Evaluating Postoperative Non-Opioid Pain Management Utilizing Local Anesthetics Coupled With Modulated Coagulation

NCT04814433
View directory record Official record
Conditions
Opioid Pain Medication
Interventions
Tranexamic acid, Aminocaproic acid, Recombinant Human Thrombin, Lidocaine Hydrochloride with Epinephrine, Bupivacaine Hydrochloride with Epinephrine
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 99 Years
Enrollment
46 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Sep 22, 2026, 6:00 PM EDT