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Showing 1–24 of 35 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Acetaminophen 500 mg Tab Clear all
Completed Phase 4 Interventional Accepts healthy volunteers Results available

TAP Block With Plain Bupivacaine Versus Wound Infiltration With Exparel for Postoperative Pain Management

NCT02074709
View directory record Official record
Conditions
Postoperative Pain
Interventions
Plain bupivacaine, Liposomal bupivacaine
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 80 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jun 3, 2018 · Synced Sep 23, 2026, 6:11 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers

Efficacy of a Single Dose of Aspirin vs. Acetaminophen in Tension Type Headache

NCT01552798
View directory record Official record
Conditions
Headache
Interventions
Acetylsalicylic acid (Aspirin, BAY1019036), Acetaminophen, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 65 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 2 Interventional

Study of Acetaminophen (ACE) in Post-operative Dental Pain

NCT02320708
View directory record Official record
Conditions
Dental Pain
Interventions
Acetaminophen (ACE) (1000 mg), Commercial ACE (1000 mg), Commercial Ibuprofen (IBU) (400 mg), Placebo
Drug
Lead sponsor
Johnson & Johnson Healthcare Products Division of McNEIL-PPC, Inc.
Industry
Eligibility
17 Years to 50 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 2, 2021 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 3 Interventional Results available

Ibuprofen/Acetaminophen Versus Nurofen Plus® and Panadeine® Extra Dental Pain Study

NCT01229449
View directory record Official record
Conditions
Post-operative Pain
Interventions
Ibuprofen/acetaminophen, Ibuprofen/acetaminophen (higher dose), Nurofen Plus®, Panadeine® Extra, Placebo
Drug
Lead sponsor
Reckitt Benckiser LLC
Industry
Eligibility
16 Years and older
Enrollment
678 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 16, 2018 · Synced Sep 23, 2026, 6:11 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 23, 2026, 6:11 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Reduced Opioid Prescription After Laparoscopic Hysterectomy

NCT05548582
View directory record Official record
Conditions
Pain, Postoperative, Opioid Misuse, Opioid Use, Pain
Interventions
OxyCODONE 5 mg Oral Tablet, Acetaminophen 500 mg Tab, Ibuprofen 600 mg
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of Ibuprofen 250 mg / Acetaminophen 500 mg Comparing The Antipyretic Effects in Healthy Male Volunteers

NCT02761980
View directory record Official record
Conditions
Fever
Interventions
Ibuprofen 250 mg / Acetaminophen 500 mg, Ibuprofen 250 mg, Acetaminophen 500 mg, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
290 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 6, 2018 · Synced Sep 23, 2026, 6:11 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 23, 2026, 6:11 AM EDT
Completed Phase 2 Interventional Results available

Rituximab for Treatment of Systemic Sclerosis-Associated Pulmonary Arterial Hypertension (SSc-PAH)

NCT01086540
View directory record Official record
Conditions
Systemic Sclerosis-Associated PAH
Interventions
Rituximab, Placebo, CMRI, prednisone, methylprednisolone, diphenhydramine, acetaminophen
Biological · Other · Diagnostic Test + 1 more
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 75 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2019
U.S. locations
17
States / cities
Stanford, California • Aurora, Colorado • Iowa City, Iowa + 13 more
Source: ClinicalTrials.gov public record
Updated Feb 20, 2023 · Synced Sep 23, 2026, 6:11 AM EDT
Withdrawn Phase 3 Interventional

Multimodal Analgesia in Shoulder Arthroplasty

NCT03586934
View directory record Official record
Conditions
Shoulder Pain, Opioid Use
Interventions
Acetaminophen, Celecoxib 200mg, Celecoxib 400 mg, Ropivacaine, Ketorolac, Acetaminophen Injectable Product, Oxycodone, Tramadol, Morphine Injectable Solution, hydrocodone bitartrate and acetaminophen, Morphine, Oxycodone Hydrochloride, Meloxicam
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 27, 2021 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 4 Interventional Results available

A Study to Assess Menstrual Cramp Pain Associated With Primary Dysmenorrhea

NCT03448536
View directory record Official record
Conditions
Dysmenorrhea
Interventions
Naproxen Sodium, (Aleve, BAY117031), Acetaminophen (Tylenol Extra Strength)
Drug
Lead sponsor
Bayer
Industry
Eligibility
15 Years to 35 Years · Female only
Enrollment
201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
8
States / cities
Chandler, Arizona • Scottsdale, Arizona • Pinellas Park, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2019 · Synced Sep 23, 2026, 6:11 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Clinical Study to Evaluate Efficacy of New Paracetamol Formulation Compared to Ibuprofen in Headache

NCT01842633
View directory record Official record
Conditions
Pain
Interventions
Paracetamol and Caffeine, Ibuprofen, Placebo
Drug · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
365 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Waltham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 31, 2017 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Gastrointestinal Safety Evaluation of Two Over the Counter Analgesics

NCT01822665
View directory record Official record
Conditions
Gastrointestinal Mucosal Damage
Interventions
Ibuprofen, Paracetamol, Placebo
Drug · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 60 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 30, 2014 · Synced Sep 23, 2026, 6:11 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 23, 2026, 6:11 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 23, 2026, 6:11 AM EDT
Terminated Phase 2 Interventional Results available

Belatacept to Prevent Organ Rejection in Kidney Transplant Patients

NCT00346151
View directory record Official record
Conditions
Renal Transplant
Interventions
Belatacept, Sirolimus, Anti-thymocyte globulin, methylprednisolone
Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 65 Years
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
2
States / cities
San Francisco, California • Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

A Cohort Study Evaluating the Efficacy of PO Magnesium in the Treatment of Acute Traumatic Brain Injury in Adolescents

NCT03475693
View directory record Official record
Conditions
Concussion Post Syndrome
Interventions
Magnesium Oxide, Acetaminophen, Zofran ODT 4 MG Disintegrating Oral Tablet
Drug
Lead sponsor
Corewell Health South
Other
Eligibility
12 Years to 18 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Saint Joseph, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 28, 2024 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 3 Interventional

Evaluate the Time of Pain Relief of Fast Acting Aspirin Versus Acetaminophen in Subjects Diagnosed With Sore Throat Pain

NCT01453400
View directory record Official record
Conditions
Pharyngitis
Interventions
Acetylsalicylic Acid (Aspirin, BAY1019036) + placebo, Acetaminophen + placebo, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older
Enrollment
177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 6, 2018 · Synced Sep 23, 2026, 6:11 AM EDT
Active, not recruiting Phase 2 Interventional

Project 1 Aim 2, Adaptations of the Brain in Chronic Pain With Opioid Exposure

NCT05463367
View directory record Official record
Conditions
Opioid Use, Opioid Dependence, Opioid-use Disorder, Narcotic Use, Back Pain, Back Injuries, Chronic Pain, Chronic Low-back Pain, Pain, Chronic, Pain;Back Low;Chronic, Pain, Back
Interventions
Carbidopa-Levodopa 25 Mg-100 Mg Oral Tablet, Naproxen 500 Mg, Opioids
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 26, 2024 · Synced Sep 23, 2026, 6:11 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 23, 2026, 6:11 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Evaluate Onset of Action of a Fast Release Aspirin

NCT01420094
View directory record Official record
Conditions
Healthy Subjects
Interventions
Acetylsalicyclic acid (Fast release Aspirin, BAY1019036), Acetaminophen (Tylenol extra strength), Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
16 Years to 45 Years
Enrollment
510 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 1 Interventional

A Dose Escalation and Expansion Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of RO7283420.

NCT04580121
View directory record Official record
Conditions
Acute Myeloid Leukemia
Interventions
RO7283420, Tocilizumab, Dasatinib, Dexamethasone, Paracetamol/acetaminophen, Diphenhydramine
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
Sacramento, California • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 2, 2024 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 4 Interventional Results available

Are Opioids Needed After ACL Reconstruction

NCT04285853
View directory record Official record
Conditions
Anterior Cruciate Ligament Rupture
Interventions
Oxycodone, Placebo oral tablet
Drug
Lead sponsor
Emory University
Other
Eligibility
14 Years to 40 Years
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
3
States / cities
Atlanta, Georgia • Tucker, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 10, 2023 · Synced Sep 23, 2026, 6:11 AM EDT
Completed Phase 4 Interventional Results available

Acetaminophen (Tylenol) for Mood and Memory Changes Associated With Corticosteroid Therapy

NCT00377364
View directory record Official record
Conditions
Asthma, Rheumatic Disease
Interventions
Drug: Acetaminophen, Drug: Placebo
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 4, 2016 · Synced Sep 23, 2026, 6:11 AM EDT