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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Completed Not applicable Interventional

Acetaminophen for Oxidative Stress After Cardiopulmonary Bypass

NCT01228305
View directory record Official record
Conditions
Congenital Heart Disease, Cardiopulmonary Bypass
Interventions
Acetaminophen
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
1 Day to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 20, 2017 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 2 Interventional Results available

Sucralfate to Improve Oral Intake in Children With Infectious Oral Ulcers: a Randomized, Double-blind, Placebo-Controlled Trial

NCT03241030
View directory record Official record
Conditions
Herpangina, Gingivostomatitis, Hand, Foot and Mouth Disease
Interventions
Sucralfate, Placebo, Acetaminophen, Ibuprofen
Drug · Other
Lead sponsor
University of Texas at Austin
Other
Eligibility
6 Months to 5 Years
Enrollment
102 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 28, 2021 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 2 Interventional Results available

The Preventive Treatment of Migraine With Low-Dose Naltrexone and Acetaminophen Combination

NCT03194555
View directory record Official record
Conditions
Migraine With or Without Aura
Interventions
Low-Dose Naltrexone and Acetaminophen Combination, Placebo
Drug
Lead sponsor
Allodynic Therapeutics, Inc
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
North Miami, Florida
Source: ClinicalTrials.gov public record
Updated Apr 9, 2024 · Synced Sep 29, 2026, 1:24 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Postoperative Pain Control & Relief in Neonates

NCT03677830
View directory record Official record
Conditions
Pain, Postoperative, Premature Infant, Opioid Use
Interventions
Acetaminophen, Saline
Drug
Lead sponsor
St. Louis University
Other
Eligibility
Up to 1 Month
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 12, 2024 · Synced Sep 29, 2026, 1:24 PM EDT
Not listed Not applicable Interventional

Prospective, Randomized, Double Blind Study Comparing IV vs PO Acetaminophen in Patients Undergoing Lumbar Discectomy

NCT02067442
View directory record Official record
Conditions
Pain
Interventions
oral acetaminophen, intravenous acetaminophen
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 17, 2015 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 3 Interventional Results available

To Evaluate the Safety and Efficacy of Acetaminophen 650 mg and 1000mg in Dental Pain After Surgery

NCT01115673
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen, Placebo Control
Drug
Lead sponsor
McNeil Consumer Healthcare Division of McNEIL-PPC, Inc.
Industry
Eligibility
16 Years to 50 Years
Enrollment
540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 27, 2012 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety of Intravenous Acetaminophen Vs Placebo for the Treatment of Endotoxin-Induced Fever in Healthy Adult Males

NCT00493311
View directory record Official record
Conditions
Fever
Interventions
IV Placebo, IV Acetaminophen, Reference Standard Endotoxin (RSE)
Drug · Biological
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 75 Years · Male only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 4 Interventional Results available

Effectiveness of IV Acetaminophen and IV Ibuprofen in Reducing Post Procedural Pain in the UFE Procedure

NCT02227316
View directory record Official record
Conditions
Symptomatic Uterine Fibroids and Adenomyosis
Interventions
IV Ibuprofen, IV Acetaminophen, Intravenous placebo/Intravenous placebo
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
21 Years to 60 Years · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
2
States / cities
Los Angeles, California • Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Jun 7, 2018 · Synced Sep 29, 2026, 1:24 PM EDT
Terminated Phase 3 Interventional

Perioperative Analgesia on Postoperative Opioid Usage and Pain Control in H&N Cancer Surgery

NCT04176419
View directory record Official record
Conditions
Postoperative Pain Control, Opioid Consumption
Interventions
Ketamine, Placebo Ketamine, Lidocaine, Placebo Lidocaine, Acetaminophen, Placebo Acetaminophen, Gabapentin, Placebo Gabapentin, Celecoxib, Placebo Celecoxib
Drug
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 11, 2024 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 4 Interventional

Treatment of Cognitive and Negative Symptoms in Schizophrenia With N-acetylcysteine

NCT02505477
View directory record Official record
Conditions
Schizophrenia, Cognitive Deficits, Schizophrenia; Negative Type
Interventions
N-acetylcysteine, Treatment as Usual
Drug · Other
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 14, 2023 · Synced Sep 29, 2026, 1:24 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Preemptive Ibuprofen Effects on Pain Perception Following Extraction and Bone Graft

NCT05919745
View directory record Official record
Conditions
Pain, Post Operative, Quality of Life
Interventions
Ibuprofen 600 mg, Placebo, Acetaminophen
Drug
Lead sponsor
Marquette University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 26, 2024 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 3 Interventional Results available

Evaluation of Efficacy and Safety of VX-548 for Acute Pain After a Bunionectomy

NCT05553366
View directory record Official record
Conditions
Acute Pain
Interventions
SUZ, HB/APAP, Placebo (matched to SUZ), Placebo (matched to HB/APAP)
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,075 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
21
States / cities
Sheffield, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2025 · Synced Sep 29, 2026, 1:24 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Safety, Tolerability, and Pharmacokinetics of UX053 in Patients With Glycogen Storage Disease Type III (GSD III)

NCT04990388
View directory record Official record
Conditions
Glycogen Storage Disease Type III
Interventions
UX053, Placebo, Antipyretic, H2 Blocker, H1 Blocker
Biological · Other · Drug
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
4
States / cities
Orange, California • Atlanta, Georgia • Philadelphia, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 3 Interventional Results available

Randomized, Double-Blind, Single-Dose, Efficacy and Safety Study of Test Acetaminophen Tablet in Postoperative Dental Pain

NCT03224403
View directory record Official record
Conditions
Post-operative Dental Pain
Interventions
Test acetaminophen, Commercial acetaminophen, Commercial ibuprofen, Placebo
Drug
Lead sponsor
Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division
Industry
Eligibility
17 Years to 50 Years
Enrollment
664 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 14, 2021 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 4 Interventional Results available

Intravenous Versus Oral Acetaminophen in Primary Total Hip Arthroplasty

NCT02839876
View directory record Official record
Conditions
Osteoarthritis, Acetaminophen, Arthroplasty, Hip Replacement
Interventions
Intravenous acetaminophen, Oral acetaminophen
Drug
Lead sponsor
Duke University
Other
Eligibility
56 Years to 85 Years
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 8, 2021 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effects of Hydromorphone on Responses to Verbal Tasks

NCT02205983
View directory record Official record
Conditions
Healthy
Interventions
2 mg hydromorphone, 1000 mg Acetaminophen, 4 mg hydromorphone, dextrose
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 40 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Oct 8, 2018 · Synced Sep 29, 2026, 1:24 PM 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 29, 2026, 1:24 PM EDT
Active, not recruiting Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of Obinutuzumab in Participants With ISN/RPS 2003 Class III or IV Lupus Nephritis

NCT04221477
View directory record Official record
Conditions
Lupus Nephritis
Interventions
Obinutuzumab, MMF, Prednisone, Placebo, Methylprednisolone, Acetaminophen, Diphenhydramine
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 75 Years
Enrollment
271 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2031
U.S. locations
18
States / cities
Birmingham, Alabama • Beverly Hills, California • Fontana, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jul 20, 2026 · Synced Sep 29, 2026, 1:24 PM 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 29, 2026, 1:24 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Efinopegdutide in Healthy Obese Participants (MK-6024-015)

NCT06701305
View directory record Official record
Conditions
Healthy
Interventions
Efinopegdutide, Placebo, Acetaminophen
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
South Miami, Florida
Source: ClinicalTrials.gov public record
Updated Feb 25, 2025 · Synced Sep 29, 2026, 1:24 PM EDT
Withdrawn Phase 2 Interventional

Maxi-Analgesic Phase 2 Study to Compare the Analgesic Effects in Different Dosing Groups to Treat Teeth Extraction Pain

NCT01104844
View directory record Official record
Conditions
Dental Pain
Interventions
Full Dose Strength, Quarter dose strength, Half dose strength, Acetaminophen standard dose, Ibuprofen low dose, Ibuprofen high dose, Placebo
Drug
Lead sponsor
AFT Pharmaceuticals, Ltd.
Industry
Eligibility
16 Years to 40 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 11, 2013 · Synced Sep 29, 2026, 1:24 PM EDT
Completed Phase 3 Interventional

Analgesic Effects of Cannabidiol for Simple Tooth Extractions in Dental Patients

NCT04271917
View directory record Official record
Conditions
Pain, Acute
Interventions
cannabidiol, placebo, acetaminophen 500mg and ibuprofen 200mg combo
Drug
Lead sponsor
University of Tennessee
Other
Eligibility
18 Years and older
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated May 1, 2022 · Synced Sep 29, 2026, 1:24 PM EDT
Withdrawn Phase 2 Interventional

Single-Site Study of Naltrexone/Acetaminophen for the Acute Treatment of Migraine: A Phase 2 Randomized Trial

NCT05685225
View directory record Official record
Conditions
Migraine
Interventions
Stage 1: Naltrexone/Acetaminophen, Stage 1: Naltrexone, Stage 1: Acetaminophen, Stage1: Placebo, Stage 2: Naltrxone/Acetaminophen high dose, Stage 2: Naltrexone/Acetaminophen medium dose, Stage 2: Naltrxone/Acetaminophen low dose, Stage 2: Placebo
Drug
Lead sponsor
Allodynic Therapeutics, Inc
Industry
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
North Miami, Florida
Source: ClinicalTrials.gov public record
Updated Dec 7, 2025 · Synced Sep 29, 2026, 1:24 PM EDT
Not yet recruiting Phase 4 Interventional

Suzetrigine for Opioid-Free Recovery After Cesarean Delivery

NCT07534709
View directory record Official record
Conditions
Cesarean Delivery, Cesarean Section, Pain, Postoperative, Opioid Consumption, Postoperative
Interventions
Suzetrigine, Placebo
Drug
Lead sponsor
University of Texas at Austin
Other
Eligibility
18 Years and older · Female only
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Sep 29, 2026, 1:24 PM EDT