Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.

Clear filters

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

ClinicalTrials.gov public records Last synced Oct 21, 2026, 10:37 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 325 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Acetaminophen Clear all
Terminated Phase 4 Interventional Results available

Acetaminophen Use in Labor - Does Use of Acetaminophen Reduce Neuraxial Analgesic Drug Requirement During Labor?

NCT02181387
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen, Placebo
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 10, 2018 · Synced Oct 21, 2026, 10:37 AM 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 21, 2026, 10:37 AM EDT
Completed Phase 3 Interventional Results available

N-acetylcysteine in Non-Acetaminophen Pediatric Acute Liver Failure

NCT00248625
View directory record Official record
Conditions
Acute Liver Failure, Hepatic Encephalopathy
Interventions
N-acetylcysteine, Placebo
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
Up to 18 Years
Enrollment
184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2010
U.S. locations
17
States / cities
San Francisco, California • Denver, Colorado • Atlanta, Georgia + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 28, 2016 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Acute Headache Treatment in Pregnancy: Occipital Nerve Block vs PO Acetaminophen With Caffeine

NCT03951649
View directory record Official record
Conditions
Headache, Pregnancy Related, Occipital Nerve Block
Interventions
Occipital Nerve Block
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
16 Years to 60 Years · Female only
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Dec 20, 2023 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 3 Interventional Results available

Aspirin for Exercise in Multiple Sclerosis (ASPIRE)

NCT03824938
View directory record Official record
Conditions
Multiple Sclerosis
Interventions
Aspirin 650mg Oral Capsule, Acetaminophen Tablet 650mg, Placebo
Drug · Other
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 27, 2023 · Synced Oct 21, 2026, 10:37 AM 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 21, 2026, 10:37 AM EDT
Completed Phase 4 Interventional Results available

Hydrocodone Compared to Acetaminophen and Ibuprofen for Post-nail Procedure Analgesia

NCT05544734
View directory record Official record
Conditions
Nail Diseases, Nail Abnormality
Interventions
Hydrocodone 5Mg/Acetaminophen 325Mg Tab, Acetaminophen 1000mg, Ibuprofen 400 mg
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 95 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 28, 2023 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 3 Interventional Results available

Ibuprofen With or Without Acetaminophen for Low Back Pain

NCT03554018
View directory record Official record
Conditions
Low Back Pain
Interventions
Acetaminophen, Ibuprofen 600 mg, Educational intervention, Placebo oral capsule
Drug · Behavioral
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years to 69 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Feb 28, 2024 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 2 Interventional

Ibuprofen Plus Acetaminophen Versus Oxycodone Alone After Hand Surgery

NCT03111186
View directory record Official record
Conditions
Carpal Tunnel Syndrome, Dupuytren Contracture, Trigger Digit, Ganglion Cysts, De Quervain Disease
Interventions
Oxycodone Hcl 5Mg, Ibuprofen 400 mg, Acetaminophen 650 mg
Drug
Lead sponsor
University of Southern California
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 26, 2019 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Not applicable Interventional

Pre-Emptive Analgesia in Ano-Rectal Surgery

NCT02402543
View directory record Official record
Conditions
Hemorrhoids, Fissure in Ano, Rectal Fistula, Anal Condyloma
Interventions
Gabapentin, Ketamine, Acetaminophen, Dexamethasone, Placebo
Drug
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
2
States / cities
Burlington, Vermont • Colchester, Vermont
Source: ClinicalTrials.gov public record
Updated Jan 16, 2018 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 2 Interventional Results available

Hydrocodone/Acetaminophen for Acute Pain Following Bunionectomy

NCT01038609
View directory record Official record
Conditions
Pain
Interventions
Hydrocodone/Acetaminophen Extended Release, Acetaminophen, Morphine Extended Release, Placebo
Drug
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
18 Years to 75 Years
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
4
States / cities
Peoria, Arizona • Austin, Texas • San Marcos, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 8, 2014 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Acetaminophen/Naproxen Sodium Fixed Combination Tablets in Adolescents 12 to <17 Years of Age With Pain

NCT05844995
View directory record Official record
Conditions
Orthodontic Pain
Interventions
Acetaminophen/Naproxen Sodium
Drug
Lead sponsor
Johnson & Johnson Consumer Inc. (J&JCI)
Industry
Eligibility
12 Years to 16 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 15, 2024 · Synced Oct 21, 2026, 10:37 AM EDT
Terminated Phase 4 Interventional Results available

Prochlorperazine Versus Acetaminophen, Aspirin, and Caffeine for the Treatment of Acute Migraine

NCT01629329
View directory record Official record
Conditions
Migraine Headaches
Interventions
Aspirin, Acetaminophen, Caffeine pills, Prochlorperazine 10mg
Drug
Lead sponsor
Albert Einstein Healthcare Network
Other
Eligibility
18 Years to 65 Years
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 18, 2020 · Synced Oct 21, 2026, 10:37 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Rectal Acetaminophen Use During Oocyte Retrievals to Reduce Post-Operative Opioid Utilization

NCT03732469
View directory record Official record
Conditions
Opioid Use
Interventions
Acetaminophen, Fentanyl, Propofol
Drug
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 56 Years · Female only
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jun 18, 2021 · Synced Oct 21, 2026, 10:37 AM 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 21, 2026, 10:37 AM EDT
Completed Phase 4 Interventional Results available

Acetaminophen's Efficacy For Post-operative Pain

NCT01721486
View directory record Official record
Conditions
Tonsillitis, Airway Obstruction, Difficulty Swallowing
Interventions
IV acetaminophen, PO acetaminophen
Drug
Lead sponsor
Kaveh Aslani, MD
Other
Eligibility
5 Years to 13 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Royal Oak, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 8, 2017 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 2 Interventional Results available

Safety Study of Ornithine Phenylacetate to Treat Patients With Acute Liver Failure/Severe Acute Liver Injury

NCT01548690
View directory record Official record
Conditions
Acute Liver Failure, Acute Liver Injury
Interventions
Ornithine Phenylacetate
Drug
Lead sponsor
William Lee
Other
Eligibility
18 Years to 65 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
11
States / cities
San Francisco, California • New Haven, Connecticut • Atlanta, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Oct 30, 2018 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Topical Acetaminophen for Itch Relief: a Proof of Concept Study in Healthy Subjects

NCT03997851
View directory record Official record
Conditions
Pruritus
Interventions
Acetaminophen, Carbomer 980
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 50 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Oct 21, 2026, 10:37 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Pharmacoeconomics and Related Patient Outcomes of Multi-dose Intravenous Acetaminophen (OFIRMEV)

NCT02369211
View directory record Official record
Conditions
Prostatectomy, Pain
Interventions
Acetaminophen (Ofirmev), Placebo
Drug · Other
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 85 Years · Male only
Enrollment
86 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 11, 2019 · Synced Oct 21, 2026, 10:37 AM EDT
Not yet recruiting Not applicable Interventional

PCDD Generation 1 Oral Liquid Acetaminophen Delivery Evaluation

NCT07765238
View directory record Official record
Conditions
Pain Management, Postoperative Pain
Interventions
PCDD Generation 1 system
Device
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 21, 2026, 10:37 AM EDT
Enrolling by invitation Phase 4 Interventional

Musculoskeletal Outcomes Using Tylenol/Ibuprofen vs. Oral Steroids in New Injuries

NCT07393503
View directory record Official record
Conditions
Musculoskeletal Pain
Interventions
Methylprednisolone 4Mg Tab, Acetaminophen 500Mg Tab, Ibuprofen 200Mg Oral Tablet
Drug
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 21, 2026, 10:37 AM 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 21, 2026, 10:37 AM EDT
Withdrawn Phase 4 Interventional

Outcome of IV Acetaminophen Use in Laparoscopic Cholecystectomies in Patients at Risk of OSA

NCT02056678
View directory record Official record
Conditions
Cholecystitis, Cholelithiasis, Obstructive Sleep Apnea
Interventions
acetaminophen, IV preparation
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Nov 3, 2016 · Synced Oct 21, 2026, 10:37 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 19, 2018 · Synced Oct 21, 2026, 10:37 AM EDT