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ClinicalTrials.gov public records Last synced Sep 19, 2026, 2:41 AM EDT

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Showing 1–24 of 64 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Placebo for naproxen Clear all
Completed Early Phase 1 Interventional

Influence of Naproxen on Heterotropic Bone Formation Following Hip Arthroscopy

NCT01539447
View directory record Official record
Conditions
Heterotopic Ossification
Interventions
Naproxen, placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 80 Years
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2022
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 13, 2022 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 4 Interventional Results available

Prospective Randomized Evaluation Of Celecoxib Integrated Safety Vs Ibuprofen Or Naproxen

NCT00346216
View directory record Official record
Conditions
Arthritis, Rheumatoid
Interventions
celecoxib, Ibuprofen, Naproxen
Drug
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
18 Years and older
Enrollment
24,081 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
871
States / cities
Alabaster, Alabama • Bessemer, Alabama • Birmingham, Alabama + 515 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2021 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 2 Interventional Results available

Study Evaluating the Analgesic Efficacy and Safety of ADL5859 in Participants With Rheumatoid Arthritis

NCT00626275
View directory record Official record
Conditions
Rheumatoid Arthritis
Interventions
ADL5859, Naproxen, 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
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
8
States / cities
Trumbull, Connecticut • Daytona Beach, Florida • Wheaton, Maryland + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 30, 2015 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Effect of Naproxen, Aspirin, Celecoxib, or Clopidogrel on the Healing of Stomach and Intestinal Ulcers

NCT00778193
View directory record Official record
Conditions
Gastroduodenal Ulcer
Interventions
Naproxen, Aspirin, Celecoxib, Clopidogrel, Placebo
Drug
Lead sponsor
Research Associates of New York, LLP
Other
Eligibility
18 Years to 75 Years
Enrollment
125 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 22, 2008 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 4 Interventional Results available

Placebo In Chronic Back Pain - Double-Blind Randomized Control Trial

NCT02013427
View directory record Official record
Conditions
Chronic Low Back Pain
Interventions
Naproxen, Placebo, Omeprazole
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 2, 2023 · Synced Sep 19, 2026, 2:41 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers Results available

Variability in Response to Non-steroidal Anti-inflammatory Drugs

NCT02502006
View directory record Official record
Conditions
Healthy
Interventions
Celecoxib, Naproxen, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 12, 2023 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 3 Interventional Results available

TREXIMET (Formerly Known as TREXIMA) for the Acute Treatment of Probable Migraine (ICHD-II 1.6.1)

NCT00387881
View directory record Official record
Conditions
Migraine, Without Aura
Interventions
sumatriptan succinate / naproxen sodium, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
679 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
70
States / cities
Phoenix, Arizona • Little Rock, Arkansas • Anaheim, California + 58 more
Source: ClinicalTrials.gov public record
Updated Dec 15, 2016 · Synced Sep 19, 2026, 2:41 AM EDT
Terminated Phase 2 Interventional Results available

Study to Evaluate Arthroplasty Specimens for Osteoarthritis of the Knee and Hip

NCT03949673
View directory record Official record
Conditions
Osteoarthritis, Knee, Osteoarthritis, Hip
Interventions
Fasinumab, Naproxen, Diclofenac, Celecoxib, Placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
6
States / cities
Phoenix, Arizona • Littleton, Colorado • Jacksonville, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2023 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Naproxen for Pain Control With Intrauterine Device Insertion

NCT02388191
View directory record Official record
Conditions
Contraception
Interventions
Naproxen sodium, Placebo tablet
Drug · Other
Lead sponsor
Planned Parenthood League of Massachusetts
Other
Eligibility
18 Years and older · Female only
Enrollment
119 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 21, 2017 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized Controlled Trial of Oral Naproxen and Transdermal Estradiol for Bleeding in LNG-IUC

NCT00789802
View directory record Official record
Conditions
Contraception, Bleeding
Interventions
transdermal estradiol, naproxen, oral placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
129 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 19, 2018 · Synced Sep 19, 2026, 2:41 AM EDT
Recruiting Phase 4 Interventional

NSAID Use for Treating Dysmenorrhea and Preventing Chronic Pelvic Pain (NSAID HEAL)

NCT06861920
View directory record Official record
Conditions
Dysmenorrhea, Chronic Pelvic Pain, Pelvic Pain
Interventions
Naproxen Sodium 550mg, Placebo, Extended Release Acetaminophen (650 mg)
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 2 Interventional

Clinical Trial to Examine the Pain Relief of PH-797804 Alone Or With Naproxen in Subjects With Osteoarthritis of the Knee

NCT01102660
View directory record Official record
Conditions
Osteoarthritis
Interventions
PH-797804, Placebo, Naproxen, Naproxen + PH-797804
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 75 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
26
States / cities
Paramount, California • Spring Valley, California • Valley Village, California + 20 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2014 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 3 Interventional Results available

Prevention of Pegfilgrastim-Induced Bone Pain (PIBP)

NCT00602420
View directory record Official record
Conditions
Musculoskeletal Complications, Pain, Unspecified Adult Solid Tumor, Protocol Specific
Interventions
naproxen, placebo
Drug · Other
Lead sponsor
Gary Morrow
Other
Eligibility
18 Years to 120 Years
Enrollment
510 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
16
States / cities
Honolulu, Hawaii • Decatur, Illinois • Evanston, Illinois + 13 more
Source: ClinicalTrials.gov public record
Updated Nov 8, 2015 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 3 Interventional Results available

Migraine Study in Adolescent Patients

NCT00843024
View directory record Official record
Conditions
Migraine Disorders
Interventions
Sumatriptan and Naproxen Sodium, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
12 Years to 17 Years
Enrollment
589 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
79
States / cities
Gilbert, Arizona • Litchfield Park, Arizona • Phoenix, Arizona + 71 more
Source: ClinicalTrials.gov public record
Updated Jan 17, 2017 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 4 Interventional

Safety and Efficacy of Celecoxib Versus Placebo in the Treatment of Knee Osteoarthritis in Patients Who Were Unresponsive to Naproxen and Ibuprofen

NCT00638807
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
Celecoxib, Placebo
Drug · Other
Lead sponsor
Pfizer's Upjohn has merged with Mylan to form Viatris Inc.
Industry
Eligibility
40 Years and older
Enrollment
388 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
33
States / cities
Birmingham, Alabama • Buena Park, California • Denver, Colorado + 28 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2021 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 2 Interventional

An Effectiveness and Safety Study of IDEA-033 in Comparison to Oral Naproxen and Placebo for the Treatment of Osteoarthritis of the Knee

NCT00211549
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
IDEA-033
Drug
Lead sponsor
IDEA AG
Industry
Eligibility
18 Years and older
Enrollment
875 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2005
U.S. locations
100
States / cities
Birmingham, Alabama • Montgomery, Alabama • Northport, Alabama + 86 more
Source: ClinicalTrials.gov public record
Updated Mar 19, 2009 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Evaluate Efficacy and Safety of Extended Release (ER) Naproxen Sodium

NCT01389284
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Naproxen Sodium ER (BAYH6689), Naproxen Sodium IR (Aleve, BAYH6689), Naproxen Sodium ER Placebo, Naproxen Sodium IR Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
15 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Aug 24, 2015 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 2 Interventional

A Study of ABT-652 in Adults With Osteoarthritis Pain of the Knee

NCT01207115
View directory record Official record
Conditions
Osteoarthritis of the Knee
Interventions
ABT-652, Placebo, Naproxen
Drug
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
40 Years to 75 Years
Enrollment
322 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
23
States / cities
Chandler, Arizona • Tempe, Arizona • Tucson, Arizona + 20 more
Source: ClinicalTrials.gov public record
Updated Jan 6, 2013 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 4 Interventional

Efficacy and Safety of Valdecoxib and Naproxen in Treating the Signs and Symptoms of Rheumatoid Arthritis (RA) in a Severe Rheumatoid Arthritis Patients

NCT00650455
View directory record Official record
Conditions
Arthritis, Rheumatoid
Interventions
valdecoxib, naproxen, placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
489 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2005
U.S. locations
52
States / cities
Birmingham, Alabama • Huntsville, Alabama • Glendale, Arizona + 46 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2008 · Synced Sep 19, 2026, 2:41 AM EDT
Not listed Not applicable Interventional

Trial of Naproxen to Evaluate Various Methods of Measuring Analgesic Effect in Osteoarthritis Pain of the Knee

NCT01557816
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
Naproxen, Placebo
Drug
Lead sponsor
Analgesic Solutions
Industry
Eligibility
21 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 21, 2012 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 4 Interventional Results available

A Randomized Study of Three Medication Regimens for Acute Low Back Pain

NCT01587274
View directory record Official record
Conditions
Acute Low Back Pain
Interventions
Naproxen, Cyclobenzaprine, Oxycodone/ acetaminophen
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
21 Years to 64 Years
Enrollment
323 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jul 30, 2018 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 2Phase 3 Interventional Results available

Treximet Early Intervention Adolescent Migraine

NCT01016678
View directory record Official record
Conditions
Migraine
Interventions
Treximet, Placebo
Drug
Lead sponsor
Premiere Research Institute
Other
Eligibility
12 Years to 17 Years
Enrollment
104 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
4
States / cities
West Palm Beach, Florida • Cincinnati, Ohio • Dallas, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated May 3, 2016 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 3 Interventional Results available

TREXIMET® Versus Butalbital-containing Combination Medications for the Acute Treatment of Migraine in Adults

NCT00573170
View directory record Official record
Conditions
Migraine Disorders, Migraine, Acute
Interventions
TREXIMET®, Butalbital-containing Combination Medications (BCM), placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
375 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
107
States / cities
Chandler, Arizona • Gilbert, Arizona • Litchfield Park, Arizona + 94 more
Source: ClinicalTrials.gov public record
Updated Dec 28, 2010 · Synced Sep 19, 2026, 2:41 AM EDT
Completed Phase 2 Interventional Results available

A Pilot Study Assessing the Treatment Responsiveness of a Novel Osteoarthritis Stiffness Scale

NCT03570554
View directory record Official record
Conditions
Osteoarthritis, Knee
Interventions
Naproxen Sodium (Aleve, BAY117031), Acetaminophen ER, Celecoxib, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
40 Years to 80 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
5
States / cities
Chandler, Arizona • Pinellas Park, Florida • Chicago, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 18, 2020 · Synced Sep 19, 2026, 2:41 AM EDT