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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: acetaminophen Tablet Clear all
Completed Phase 2 Interventional Results available

Naproxen Sodium/Acetaminophen Proof of Concept Dosing Study

NCT03879408
View directory record Official record
Conditions
Pain
Interventions
440 mg naproxen sodium with 1000 mg acetaminophen, 220 mg naproxen sodium with 650 mg acetaminophen, 10 mg hydrocodone + 650 mg acetaminophen, 440 mg naproxen sodium, Placebo tablet
Drug
Lead sponsor
Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division
Industry
Eligibility
17 Years to 50 Years
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 4, 2022 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 2 Interventional

A Study Comparing the Analgesic Activity of Extended Release Hydrocodone/Acetaminophen (Vicodin® CR) and Placebo in Subjects With Pain Following Bunionectomy Surgery

NCT00404391
View directory record Official record
Conditions
Pain
Interventions
Hydrocodone/Acetaminophen Extended Release, Placebo
Drug
Lead sponsor
Abbott
Industry
Eligibility
18 Years to 65 Years
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2004
U.S. locations
4
States / cities
Owing Mills, Maryland • Austin, Texas • San Marcos, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2011 · Synced Sep 16, 2026, 3:08 AM EDT
Not listed Phase 3 Interventional Accepts healthy volunteers

Post Operative Pain Management Through Adductor Canal Block With Bupivacaine for ACL Reconstruction

NCT05161221
View directory record Official record
Conditions
Pain, Postoperative, ACL
Interventions
OxyCODONE 5 mg Oral Tablet, Naproxen 500 Mg, Tylenol Pill, Liposomal bupivacaine, Femoral Nerve Catheter
Drug · Procedure
Lead sponsor
Rothman Institute Orthopaedics
Other
Eligibility
18 Years and older
Enrollment
154 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 16, 2021 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Drug Interactions Between Morphine and Orally or IV Administered Acetaminophen

NCT02848729
View directory record Official record
Conditions
Pain
Interventions
Oral Acetaminophen, IV Acetaminophen, IV Morphine, Placebo Tablets, Saline
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
3
States / cities
Tucson, Arizona • Naples, Florida • Kingston, Rhode Island
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Ultrasound-guided Transversus Abdominis Plane Block After Hysterectomy

NCT01153503
View directory record Official record
Conditions
Post Operative Pain
Interventions
TAP block
Procedure
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 80 Years · Female only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 28, 2018 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparative Bioavailability Study of Codeine Sulfate

NCT01010152
View directory record Official record
Conditions
Pain
Interventions
Codeine Sulfate
Drug
Lead sponsor
Roxane Laboratories
Industry
Eligibility
18 Years to 45 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 16, 2026, 3:08 AM 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 16, 2026, 3:08 AM EDT
Recruiting Phase 3 Interventional

Opioid-Sparing Joint Replacement

NCT07348627
View directory record Official record
Conditions
Pain Management, Opioid Consumption
Interventions
Placebo, Oxycodone 5 mg, Multimodal Non-Opioid Analgesia
Drug · Other
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 16, 2026 · Synced Sep 16, 2026, 3:08 AM EDT
Withdrawn No phase listed Observational

Factors Affecting Perioperative Outcomes

NCT01530191
View directory record Official record
Conditions
Pelvic Organ Prolapse
Interventions
Not listed
Lead sponsor
University of Oklahoma
Other
Eligibility
21 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 15, 2013 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 3 Interventional Results available

A Safety And Efficacy Study of Ibuprofen 250 mg / Acetaminophen 500 mg In The Treatment Of Post-Surgical Dental Pain

NCT02912650
View directory record Official record
Conditions
Post-surgical Pain Following Extraction of Molar Teeth
Interventions
Ibuprofen 250 mg / Acetaminophen 500 mg, Ibuprofen 250 mg, Acetaminophen 650 mg, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 40 Years
Enrollment
568 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 29, 2017 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized-controlled Trial of Post-operative Opiate Quantities After Urogynecologic Surgery

NCT03319277
View directory record Official record
Conditions
Postoperative Pain, Opioid Use
Interventions
Decreased opiate prescription, Routine opiate prescription
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 30, 2019 · Synced Sep 16, 2026, 3:08 AM EDT
Terminated Phase 3 Interventional Results available

Management Of Pain After Cesarean Trial

NCT03929640
View directory record Official record
Conditions
Pain, Postoperative, Opioid Use
Interventions
Acetaminophen, Placebo, Ibuprofen
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
49 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 3, 2024 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 3 Interventional Results available

Maxigesic 325 Acute Dental Pain Study

NCT01420653
View directory record Official record
Conditions
Dental Pain
Interventions
Maxigesic 325, Acetaminophen, Ibuprofen, Placebo
Drug
Lead sponsor
AFT Pharmaceuticals, Ltd.
Industry
Eligibility
18 Years to 60 Years
Enrollment
408 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Dec 5, 2018 · Synced Sep 16, 2026, 3:08 AM EDT
Enrolling by invitation Phase 4 Interventional

Suzetrigine vs Norco-postoperative Mohs Pain

NCT07575230
View directory record Official record
Conditions
Cutaneous Tumors, Mohs Micrographic Surgery
Interventions
Norco 5Mg-325Mg Tablet, Suzetrigine
Drug
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years to 89 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 3 Interventional

A Study to Evaluate a Fixed Combination of Acetaminophen/Naproxen Sodium in Acute Postoperative Pain Following Bunionectomy

NCT05868122
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen/Naproxen Sodium Fixed Combination, Placebo
Drug
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
16 Years to 65 Years
Enrollment
143 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
4
States / cities
New Providence, New Jersey • Bellaire, Texas • Houston, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 3 Interventional Results available

A 12-Week Efficacy Study of Paracetamol 1000mg Sustained-release Tablets in Patients With Osteoarthritis

NCT02311881
View directory record Official record
Conditions
Pain
Interventions
Paracetamol 1000 mg SR tablets, Paracetamol 665 mg SR tablets, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years to 80 Years
Enrollment
960 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
56
States / cities
Birmingham, Alabama • Huntsville, Alabama • Chandler, Arizona + 46 more
Source: ClinicalTrials.gov public record
Updated Apr 6, 2017 · Synced Sep 16, 2026, 3:08 AM EDT
Recruiting Phase 2 Interventional

NSAID Use After Robotic Partial Nephrectomy

NCT05842044
View directory record Official record
Conditions
Kidney Cancer, Renal Cancer, Renal Neoplasm
Interventions
Ketorolac, Acetaminophen, Oxycodone, Hydromorphone, Ibuprofen
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 99 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 4, 2025 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 3 Interventional Results available

A Study of Ibuprofen (IBU) 250mg/APAP 500mg In The Treatment Of Post-Surgical Dental Pain

NCT02837952
View directory record Official record
Conditions
Pain
Interventions
FDC IBU/APAP 250 mg/500 mg, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 40 Years
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 4, 2018 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 2 Interventional

Pilot Study of the Efficacy and Safety of Q8003 in Patients Who Have Undergone Total Knee Arthroplasty or Total Hip Arthroplasty

NCT00818493
View directory record Official record
Conditions
Postoperative Pain
Interventions
Q8003 (morphine sulfate and oxycodone hydrochloride), Low dose Q8003 (morphine sulfate and oxycodone hydrochloride), Percocet (oxycodone and acetaminophen)
Drug
Lead sponsor
QRxPharma Inc.
Industry
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
4
States / cities
Birmingham, Alabama • Phoenix, Arizona • Royal Oak, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated May 16, 2012 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 2 Interventional Results available

Study of Long-Acting Acetaminophen in Postoperative Dental Pain

NCT01960114
View directory record Official record
Conditions
Dental Pain
Interventions
Acetaminophen ER, Placebo
Drug
Lead sponsor
McNeil Consumer Healthcare Division of McNEIL-PPC, Inc.
Industry
Eligibility
17 Years to 45 Years
Enrollment
403 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 9, 2015 · Synced Sep 16, 2026, 3:08 AM EDT
Not listed Phase 4 Interventional

Randomized Trial of Narcotic vs Non-Narcotic Pain Modulation After Labrum Repair

NCT05974423
View directory record Official record
Conditions
Postoperative Pain, Acute, Opioid Use, Labral Tear, Glenoid
Interventions
Tylenol, Ibuprofen, and Oxycodone, Tylenol and Ibuprofen only
Drug
Lead sponsor
The Cooper Health System
Other
Eligibility
15 Years to 25 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Camden, New Jersey
Source: ClinicalTrials.gov public record
Updated Aug 2, 2023 · Synced Sep 16, 2026, 3:08 AM EDT
Terminated Phase 4 Interventional Results available

Pharmacokinetics (PK) and Safety Study of XARTEMIS® XR in Postsurgical Adolescent Subjects With Moderate to Severe Acute Pain

NCT02508935
View directory record Official record
Conditions
Acute Pain
Interventions
XARTEMIS XR
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
12 Years to 17 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
2
States / cities
Durham, North Carolina • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 21, 2020 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Combination Immunosuppressive Therapy to Prevent Kidney Transplant Rejection in Adults

NCT00078559
View directory record Official record
Conditions
Kidney Transplantation, Kidney Disease
Interventions
Alemtuzumab, Sirolimus, Tacrolimus, Kidney transplant, Methylprednisolone (or equivalent), Acetaminophen, Diphenhydramine, Trimethoprim (TMP)/Sulfa (Bactrim, Septra), Valgancyclovir, Acyclovir, Pentamidine, Clotrimazole, Nystatin
Drug · Procedure
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2010
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 28, 2018 · Synced Sep 16, 2026, 3:08 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Idiopathic Intracranial Hypertension Treatment Trial

NCT01003639
View directory record Official record
Conditions
Idiopathic Intracranial Hypertension
Interventions
Acetazolamide, Placebo, Formal weight loss counselling program
Drug · Behavioral
Lead sponsor
St. Luke's-Roosevelt Hospital Center
Other
Eligibility
18 Years to 60 Years
Enrollment
165 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2014
U.S. locations
39
States / cities
Birmingham, Alabama • Los Angeles, California • Waterbury, Connecticut + 31 more
Source: ClinicalTrials.gov public record
Updated Dec 11, 2018 · Synced Sep 16, 2026, 3:08 AM EDT