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ClinicalTrials.gov public records Last synced Sep 30, 2026, 5:13 AM EDT

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Showing 25–48 of 64 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Placebo for naproxen Clear all
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 31, 2018 · Synced Sep 30, 2026, 5:13 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 23, 2008 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Phase 3 Interventional

Treximet (Sumatriptan/Naproxen Sodium), Formerly Known as Trexima, In The Acute Treatment Of Multiple Migraine Attacks

NCT00240630
View directory record Official record
Conditions
Migraine Disorders, Migraine
Interventions
sumatriptan succinate/naproxen sodium, placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
646 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
50
States / cities
Chandler, Arizona • Phoenix, Arizona • Little Rock, Arkansas + 45 more
Source: ClinicalTrials.gov public record
Updated Apr 16, 2015 · Synced Sep 30, 2026, 5:13 AM EDT
Terminated Phase 4 Interventional Results available

Trial of Naproxen Sodium for the Treatment of OCD in Children With PANDAS

NCT04015596
View directory record Official record
Conditions
PANDAS, Anxiety Disorder, Autoimmune Diseases, Obsessive-Compulsive Disorder
Interventions
Naproxen Sodium, Placebo
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
6 Years to 15 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 20, 2026 · Synced Sep 30, 2026, 5:13 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 22, 2012 · Synced Sep 30, 2026, 5:13 AM EDT
Recruiting Phase 4 Interventional

Duloxetine for LBP

NCT05851976
View directory record Official record
Conditions
Back Pain, Low
Interventions
Naproxen, Duloxetine
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years to 64 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Phase 3 Interventional Results available

A Study to Determine the Safety and the Efficacy of Fasinumab Compared to Placebo and Naproxen for Treatment of Adults With Pain From Osteoarthritis of the Knee or Hip

NCT03161093
View directory record Official record
Conditions
Osteoarthritis, Knee, Osteoarthritis, Hip
Interventions
Fasinumab, Naproxen, Fasinumab-matching placebo, Naproxen-matching placebo
Drug
Lead sponsor
Regeneron Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
3,307 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
58
States / cities
Mesa, Arizona • Phoenix, Arizona • Tucson, Arizona + 50 more
Source: ClinicalTrials.gov public record
Updated Nov 14, 2022 · Synced Sep 30, 2026, 5:13 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 25, 2015 · Synced Sep 30, 2026, 5:13 AM EDT
Enrolling by invitation Phase 3 Interventional Accepts healthy volunteers

NSAIDS Following Elective Lumbar Spine Fusion

NCT07743606
View directory record Official record
Conditions
NSAID (Non-Steroidal Anti-Inflammatory Drug), Lumbar Spine Fusion, Ketorolac, Postoperative Pain
Interventions
Ketorolac, Naproxen, Standard Postoperative Pain Management
Drug · Other
Lead sponsor
Rothman Institute Orthopaedics
Other
Eligibility
18 Years and older
Enrollment
428 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 4, 2026 · Synced Sep 30, 2026, 5:13 AM EDT
Withdrawn Phase 2 Interventional

Novel Non-opioid Post-surgical Pain Treatment in Females

NCT05087914
View directory record Official record
Conditions
Acute Pain, Bunionectomy, Toe Fusion
Interventions
Carbidopa-Levodopa (100mg/25mg):, Naproxen
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 75 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 18, 2024 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety Trial of Naproxen Sodium/ Diphenhydramine

NCT01365052
View directory record Official record
Conditions
Pain
Interventions
Naproxen sodium 440 mg/DPH 50 mg (BAY98-7111), Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
12 Years and older
Enrollment
326 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
19
States / cities
Chandler, Arizona • Mesa, Arizona • Peoria, Arizona + 16 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2015 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Phase 2 Interventional Results available

Efficacy and Safety of Extended Release and Immediate Release Febuxostat in Participants With Gout and Moderate Renal Impairment

NCT02128490
View directory record Official record
Conditions
Gout, Moderate Renal Impairment
Interventions
Febuxostat IR, Febuxostat XR, Febuxostat placebo, Colchicine, Naproxen, Lansoprazole
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
189 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
89
States / cities
Birmingham, Alabama • Muscle Shoals, Alabama • Phoenix, Arizona + 75 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2016 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Study to Evaluate Efficacy and Safety of IW-6118 in Patients Undergoing Third Molar Extraction

NCT01107236
View directory record Official record
Conditions
Healthy
Interventions
IW-6118, Matching Placebo, Naproxen Sodium
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 30 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 11, 2022 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Extended Release and Immediate Release Febuxostat in Participants With Gout

NCT02139046
View directory record Official record
Conditions
Gout
Interventions
Febuxostat IR, Febuxostat XR, Febuxostat placebo, Colchicine, Naproxen, Lansoprazole
Drug
Lead sponsor
Takeda
Industry
Eligibility
18 Years and older
Enrollment
1,790 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
192
States / cities
Binghamton, Alabama • Birmingham, Alabama • Huntsville, Alabama + 189 more
Source: ClinicalTrials.gov public record
Updated Nov 3, 2016 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Efficacy of Intrauterine Lidocaine and Naproxen for Pain Control With Intrauterine Device Insertion

NCT02769247
View directory record Official record
Conditions
Contraception, Pain
Interventions
Naproxen, Lidocaine, placebo
Drug
Lead sponsor
Walter Reed National Military Medical Center
Federal
Eligibility
18 Years and older · Female only
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 8, 2018 · Synced Sep 30, 2026, 5:13 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 20, 2009 · Synced Sep 30, 2026, 5:13 AM EDT
Terminated Phase 4 Interventional Results available

Treximet for Prevention of Post Traumatic Headache Associated With Cognitive Dysfunction

NCT01053507
View directory record Official record
Conditions
Post-Traumatic Headache
Interventions
sumatriptan/naproxen sodium, Placebo
Drug
Lead sponsor
Cady, Roger, M.D.
Individual
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
3
States / cities
Springfield, Missouri • Nashville, Tennessee • Temple, Texas
Source: ClinicalTrials.gov public record
Updated Jul 29, 2020 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Phase 2 Interventional Results available

PECS Block vs. Multimodal Analgesia for Prevention of Persistent Postoperative Pain in Breast Surgery

NCT03084536
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Female, Cancer of Breast
Interventions
Bupivacaine, Gabapentin, Celecoxib, Acetaminophen, Midazolam, Fentanyl
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 24, 2024 · Synced Sep 30, 2026, 5:13 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Copper IUD Treatment Observation Study

NCT02519231
View directory record Official record
Conditions
Menorrhagia
Interventions
Naproxen, Placebo
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
5
States / cities
Chicago, Illinois • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Oct 14, 2020 · Synced Sep 30, 2026, 5:13 AM EDT
Terminated Phase 3 Interventional Results available

Long-Term Analgesic Efficacy And Safety Of Tanezumab Alone Or In Combination With Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) Versus NSAIDs Alone In Patients With Osteoarthritis Of The Knee Or Hip

NCT00809354
View directory record Official record
Conditions
Osteoarthritis, Arthritis
Interventions
NSAID, tanezumab
Drug · Biological
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 99 Years
Enrollment
2,720 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
250
States / cities
Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 161 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2021 · Synced Sep 30, 2026, 5:13 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 13, 2023 · Synced Sep 30, 2026, 5:13 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 22, 2014 · Synced Sep 30, 2026, 5:13 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Human Experimental Models of Pain (HEMP)

NCT07549490
View directory record Official record
Conditions
Acute Pain
Interventions
Placebo, Naproxen, Pregabalin
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 100 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2030
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Sep 30, 2026, 5:13 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 9, 2015 · Synced Sep 30, 2026, 5:13 AM EDT