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ClinicalTrials.gov public records Last synced Oct 13, 2026, 7:04 PM EDT

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Showing 217–240 of 948 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Acetaminophen (Ofirmev) Clear all
Completed Phase 4 Interventional Results available

Pain Control Following Sinus Surgery

NCT03783702
View directory record Official record
Conditions
Sinusitis, Opioid Use, Opioid Abuse, Narcotic Use, Otolaryngologic Disease, Postoperative Pain, Pain
Interventions
OxyCODONE 5 Mg (milligram) Oral Tablet, Ibuprofen 600 Mg (milligram) Oral Tablet, Acetaminophen 650 MG (milligram) Oral Tablet
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
5
States / cities
Stanford, California • Evanston, Illinois • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 1, 2021 · Synced Oct 13, 2026, 7:04 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Equality Study of Ofirmev vs Oral Acetaminophen

NCT01711229
View directory record Official record
Conditions
Pain, Postoperative
Interventions
IV acetaminophen, oral acetaminophen
Drug
Lead sponsor
Babiash, Kimberly H., M.D.
Individual
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Wichita, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 28, 2015 · Synced Oct 13, 2026, 7:04 PM EDT
Terminated Phase 1 Interventional

Nonmyeloablative Allo Stem Cell Transplant for Severe Autoimmune Diseases

NCT00849745
View directory record Official record
Conditions
Systemic Lupus Erythematosus, Systemic Sclerosis
Interventions
Nonmyeloablative allogeneic stem cell transplant
Procedure
Lead sponsor
Duke University
Other
Eligibility
18 Years to 69 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2015
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 23, 2016 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Phase 4 Interventional Results available

Treatment of Acute Sinusitis

NCT00377403
View directory record Official record
Conditions
Acute Respiratory Infections, Acute Rhinosinusitis
Interventions
Acetaminophen, Amoxicillin, Dextromethorphan hydrobromide with guaifenesin, Guaifenesin, Pseudoephedrine Sustained Action, Saline spray (0.65%)
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 28, 2012 · Synced Oct 13, 2026, 7:04 PM 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 12, 2026 · Synced Oct 13, 2026, 7:04 PM EDT
Not yet recruiting No phase listed Observational

Effect of Acetominophen an Gait Fatigue in Multiple Sclerosis

NCT07440446
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
1000mg acetaminophen or placebo
Drug
Lead sponsor
Hunter College of City University of New York
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Early Phase 1 Interventional

Towards Enhanced Recovery After Cesarean

NCT04612920
View directory record Official record
Conditions
Cesarean Section Complications
Interventions
Ibuprofen, acetaminophen, oxycodone
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Mar 14, 2023 · Synced Oct 13, 2026, 7:04 PM EDT
Withdrawn Phase 3 Interventional

Acetaminophen Randomized Controlled Trial

NCT02737124
View directory record Official record
Conditions
Post Operative Pain
Interventions
Acetaminophen, Placebo
Drug · Other
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 26, 2018 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect on Acetaminophen Metabolism by Liquid Formulations

NCT01246713
View directory record Official record
Conditions
Acetaminophen Metabolism, Acetaminophen Poisoning, Drug Metabolism by Excipients
Interventions
Acetaminophen liquid formulation, Acetaminophen solid formulation
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 40 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 8, 2017 · Synced Oct 13, 2026, 7:04 PM EDT
Not yet recruiting Phase 4 Interventional

Oral Versus Intravenous Acetaminophen in Lumbar Spine Surgery

NCT07203079
View directory record Official record
Conditions
Postoperative Pain
Interventions
Acetaminophen Oral Tablet, placebo oral tablet, Acetaminophen infusion, Placebo infusion
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Oct 8, 2025 · Synced Oct 13, 2026, 7:04 PM EDT
Enrolling by invitation Phase 4 Interventional

A Study of Intravenous Acetaminophen for Small Bowel Obstruction

NCT05878015
View directory record Official record
Conditions
Small Bowel Obstruction
Interventions
Acetaminophen
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Phase 4 Interventional Results available

Prospective, Double Blind, Placebo Control, Bariatric IV Ace

NCT02452320
View directory record Official record
Conditions
Obesity
Interventions
intravenous acetaminophen, Placebo
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
136 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 20, 2018 · Synced Oct 13, 2026, 7:04 PM EDT
Terminated Phase 2 Interventional

Evaluation of the Efficacy of Fomepizole in the Treatment of Acetaminophen Overdose

NCT05517668
View directory record Official record
Conditions
Acetaminophen, Drug Overdose, Acetaminophen Overdose, Acetaminophen Poisoning, Drug-induced Liver Injury, Liver Failure, Liver Toxicity
Interventions
Intravenous infusion of N-acetylcysteine, Intravenous infusion of Fomepizole (4-MP)
Drug
Lead sponsor
Richard Dart, MD, PhD
Other
Eligibility
10 Years to 99 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Phase 3 Interventional

A Study of an Acetaminophen/Naproxen Sodium Fixed Combination, Acetaminophen and Naproxen Sodium in Postoperative Dental Pain

NCT05761574
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen/Naproxen Sodium Fixed Combination, Naproxen Sodium, Acetaminophen, Placebo
Drug
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
16 Years to 50 Years
Enrollment
447 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 2, 2025 · Synced Oct 13, 2026, 7:04 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Effect of Gabapentin on Postoperative Opioid Analgesic Use and Pain in Adolescents Undergoing Tonsillectomy

NCT05024825
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Gabapentin, hydrocodone, acetaminophen and ibuprofen
Drug
Lead sponsor
Albany Medical College
Other
Eligibility
12 Years to 18 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Albany, New York
Source: ClinicalTrials.gov public record
Updated Aug 27, 2021 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Not applicable Interventional

Randomized Controlled Trial of Chiropractic Manipulation Versus Medical Therapy for Chronic Neck Pain

NCT00429624
View directory record Official record
Conditions
Neck Pain
Interventions
Chiropractic manipulation, acetaminophen
Procedure · Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 70 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1994 – 2007
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 5, 2013 · Synced Oct 13, 2026, 7:04 PM EDT
Recruiting Phase 4 Interventional

Efficacy of Methylprednisolone for Pain Control After ACL Repair

NCT07158476
View directory record Official record
Conditions
ACL Surgery, Pain Management
Interventions
Meloxicam 15 mg, Medrol 4 MG Oral Tablet Includes Medrol Dosepak, Gabapentin 300 mg, Hydrocodone 5Mg/Acetaminophen 325Mg Tab, Ketorolac 10 Mg Oral Tablet
Drug
Lead sponsor
St. Louis University
Other
Eligibility
13 Years to 50 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 24, 2025 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Phase 4 Interventional Results available

IV vs. Oral Acetaminophen as a Component of Multimodal Analgesia After Total Hip Arthroplasty

NCT03020966
View directory record Official record
Conditions
Pain, Postoperative, Opioid Use
Interventions
Acetaminophen
Drug
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years to 90 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 10, 2021 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Dental Pain Study of Analgesics in Patients Undergoing Molar Removal

NCT03652818
View directory record Official record
Conditions
Dental Pain
Interventions
Pre-Op pregabalin, Pre-Op Placebo 1, Post-Op pregabalin, Post-Op Placebo 1, Post-Op Placebo 2, Post-Op acetaminophen
Drug
Lead sponsor
Nevakar, Inc.
Industry
Eligibility
17 Years to 55 Years
Enrollment
115 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Nov 23, 2021 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Phase 2 Interventional Results available

Early Treatment Versus Delayed Conservative Treatment of the Patent Ductus Arteriosus

NCT01958320
View directory record Official record
Conditions
Patent Ductus Arteriosus, Surgery, Necrotizing Enterocolitis, Intestinal Perforation
Interventions
pharmacologic treatment of the PDA, no pharmacologic treatment of the PDA, NSAID
Other · Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
5 Days to 14 Days
Enrollment
202 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
13
States / cities
San Diego, California • San Francisco, California • San Jose, California + 9 more
Source: ClinicalTrials.gov public record
Updated Nov 30, 2018 · Synced Oct 13, 2026, 7:04 PM EDT
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers

Comparing Perioperative Outcomes in Pain Control

NCT05690282
View directory record Official record
Conditions
Post-operative Pain
Interventions
Multimodal Pain Management (Ibuprofen/Acetaminophen/GABAPentin/0.25%Bupivacaine)
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 24, 2025 · Synced Oct 13, 2026, 7:04 PM EDT
Active, not recruiting Not applicable Interventional

CYP2D6 Genotype-guided Management of Opioid Analgesics in Patients Undergoing Elective Ventral Hernia Repairs

NCT06565546
View directory record Official record
Conditions
Ventral Hernia
Interventions
Opioid pain medication prescribed based on CYP2D6 genotype testing PLUS Acetaminophen and Gabapentin, Acetaminophen and Gabapentin: standard postoperative pain medications
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 90 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Not applicable Interventional

Non-opioid Based Pain Control After Thyroidectomy

NCT03988075
View directory record Official record
Conditions
Pain, Thyroidectomy
Interventions
Acetaminophen and hydrocodone based pain control, Acetaminophen and ibuprofen based pain control
Other
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated May 12, 2020 · Synced Oct 13, 2026, 7:04 PM EDT
Completed Phase 2 Interventional Results available

Acetaminophen for the Reduction of Oxidative Injury in Severe Sepsis

NCT01739361
View directory record Official record
Conditions
Severe Sepsis
Interventions
Acetaminophen, placebo
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 26, 2017 · Synced Oct 13, 2026, 7:04 PM EDT