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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Acetaminophen Clear all
Completed No phase listed Observational Accepts healthy volunteers

Investigation of Efficacy of Improved Acetaminophen Labeling

NCT01592448
View directory record Official record
Conditions
Acetaminophen Overdose, Pain
Interventions
Active Ingredient Icon
Behavioral
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
662 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
4
States / cities
Atlanta, Georgia • Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 17, 2014 · Synced Jul 22, 2026, 11:10 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 9, 2021 · Synced Jul 22, 2026, 11:10 PM EDT
Terminated Not applicable Interventional Results available

IV Acetaminophen vs IV Morphine for Pain Control in Pregnant Women

NCT02267772
View directory record Official record
Conditions
Pain Management in Pregnant Women
Interventions
IV Acetaminophen, IV Morphine
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
163 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 21, 2021 · Synced Jul 22, 2026, 11:10 PM EDT
Terminated Not applicable Interventional

Glucagon Counterregulation in Type 1 Diabetes

NCT03547427
View directory record Official record
Conditions
Type 1 Diabetes Mellitus
Interventions
Basal insulin alone, Basal pramlintide and reduced basal insulin, CGM, Acetaminophen test, Insulin-induced hypoglycemia, Exercise-induced hypoglycemia
Other
Lead sponsor
University of Virginia
Other
Eligibility
21 Years to 55 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 27, 2022 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 3 Interventional Results available

A Multi-Center Study of the Efficacy, Pharmacokinetics (PK) and Pharmacodynamics (PD) of IV Acetaminophen for the Treatment of Acute Pain in Pediatric Patients

NCT01635101
View directory record Official record
Conditions
Acute Pain
Interventions
IV Acetaminophen, IV Control
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
1 Day to 2 Years
Enrollment
197 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
22
States / cities
Birmingham, Alabama • Orange, California • San Diego, California + 19 more
Source: ClinicalTrials.gov public record
Updated Jan 20, 2020 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 3 Interventional Results available

Study to Evaluate the Safety and Efficacy of ABT-712 in Subjects With Moderate to Severe Chronic Low Back Pain (CLBP)

NCT00763321
View directory record Official record
Conditions
Chronic Low Back Pain
Interventions
ABT-712, Placebo
Drug
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
21 Years to 75 Years
Enrollment
287 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2009
U.S. locations
31
States / cities
Huntsville, Alabama • Burbank, California • San Diego, California + 27 more
Source: ClinicalTrials.gov public record
Updated Feb 5, 2014 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 4 Interventional Results available

Modified Pre-operative Oral Doses Acetaminophen Versus Intravenous Acetaminophen

NCT02994940
View directory record Official record
Conditions
Tonsillectomy, Adenoidectomy
Interventions
Acetaminophen
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
3 Years to 17 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2021 · Synced Jul 22, 2026, 11:10 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 25, 2017 · Synced Jul 22, 2026, 11:10 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers Results available

Can Acetaminophen Given 1-2 Hours to Children Before Ear Tube Surgery Reduce Agitation After Anesthesia?

NCT01737593
View directory record Official record
Conditions
Emergence Agitation, Pain
Interventions
Acetaminophen
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
6 Months to 6 Years
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 2 Interventional Results available

Four Arm Safety & Efficacy With Antipyrine and Benzocaine Otic Solution in Children With Acute Otitis Media

NCT02037893
View directory record Official record
Conditions
Acute Otitis Media
Interventions
Antipyrine and Benzocaine otic solution, Antipyrine Otic Solution, Benzocaine Otic Solution, Placebo Otic solution
Drug
Lead sponsor
Currax Pharmaceuticals
Industry
Eligibility
2 Months to 12 Years
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
10
States / cities
Mesa, Arizona • Tucson, Arizona • Bentonville, Arkansas + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2024 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 2 Interventional

Assessing Efficacy of Intravenous Acetaminophen for Perioperative Pain Treatment in Spinal Surgery

NCT05764707
View directory record Official record
Conditions
Lumbar; Injury
Interventions
Acetaminophen, Placebo
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 11, 2024 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 3 Interventional

A Study of Extended-Release Hydrocodone/Acetaminophen (Vicodin CR®) in Subjects With Acute Pain Following Bunionectomy

NCT00402792
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
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
5
States / cities
Austin, Texas • Houston, Texas • San Antonio, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 24, 2011 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 3 Interventional

Long Term Safety and Tolerability Study in Approximately 350 Subjects With Moderate to Severe Chronic, Non-malignant Pain

NCT00195728
View directory record Official record
Conditions
Moderate to Severe Chronic, Non-malignant Pain
Interventions
Hydrocodone/Acetaminophen on Extended Release
Drug
Lead sponsor
Abbott
Industry
Eligibility
21 Years to 75 Years
Enrollment
431 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
76
States / cities
Huntsville, Alabama • Chandler, Arizona • Mesa, Arizona + 60 more
Source: ClinicalTrials.gov public record
Updated Jan 18, 2011 · Synced Jul 22, 2026, 11:10 PM 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 26, 2023 · Synced Jul 22, 2026, 11:10 PM 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 Jul 22, 2026, 11:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Post-operative Pain Control After Photorefractive Keratectomy Comparing Acetaminophen/Codeine vs Acetaminophen/Oxycodone

NCT04399122
View directory record Official record
Conditions
Post-operative Pain Control
Interventions
acetaminophen/codeine vs acetaminophen/oxycodone
Drug
Lead sponsor
59th Medical Wing
Federal
Eligibility
21 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 4, 2021 · Synced Jul 22, 2026, 11:10 PM 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 Jul 22, 2026, 11:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

The Effects of Aspirin and Acetaminophen on the Stomach in Healthy Volunteers

NCT00594867
View directory record Official record
Conditions
Healthy
Interventions
Acetaminophen - 4 grams per day + Placebo, Aspirin - 325 mg per day + Placebo, Acetaminophen 4 gram per day + Aspirin 325 mg per day
Drug
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 75 Years
Enrollment
94 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 14, 2019 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Study of the Efficacy and Safety of Intravenous vs Oral Acetaminophen for Treatment of Fever in Healthy Adult Males

NCT00564629
View directory record Official record
Conditions
Fever
Interventions
Intravenous acetaminophen plus oral placebo, Oral acetaminophen plus IV placebo, Reference standard endotoxin (RSE)
Drug · Biological
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 75 Years · Male only
Enrollment
105 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 2 Interventional Results available

Acute Pain Study Following Bunionectomy

NCT01333722
View directory record Official record
Conditions
Pain
Interventions
Hydrocodone/Acetaminophen Extended Release, Placebo
Drug
Lead sponsor
AbbVie (prior sponsor, Abbott)
Industry
Eligibility
18 Years to 75 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
3
States / cities
Pasadena, California • Austin, Texas • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 7, 2014 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Acetaminophen and Impaired Musculoskeletal Adaptations to Exercise Training

NCT01083901
View directory record Official record
Conditions
Sarcopenia, Osteoporosis, Aging
Interventions
Resistance training
Behavioral
Lead sponsor
University of Colorado, Denver
Other
Eligibility
50 Years and older · Male only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2011
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 23, 2013 · Synced Jul 22, 2026, 11:10 PM EDT
Completed No phase listed Observational

Treatment of APAP Toxicity With IV and Oral NAC 2008-2011

NCT01465542
View directory record Official record
Conditions
Acetaminophen Toxicity
Interventions
Not listed
Lead sponsor
Akron Children's Hospital
Other
Eligibility
1 Month to 21 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011
U.S. locations
1
States / cities
Akron, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 24, 2023 · Synced Jul 22, 2026, 11:10 PM EDT
Not listed Not applicable Interventional

Efficacy of IV Acetaminophen in Acute Post-Operative Pain Control in Laparoscopic Roux-en-Y Gastric Bypass Surgery (LRYGBP) Patients

NCT01460667
View directory record Official record
Conditions
Morbid Obesity
Interventions
IV acetaminophen, IV normal saline
Drug
Lead sponsor
McLaren Regional Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
1
States / cities
Flint, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 26, 2011 · Synced Jul 22, 2026, 11:10 PM EDT
Completed Phase 2Phase 3 Interventional Results available

13C-Methacetin Breath Test for the Prediction of Outcome in in ALI or ALF

NCT02786836
View directory record Official record
Conditions
Acute Liver Failure
Interventions
13C-Methacetin
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
11
States / cities
Birmingham, Alabama • San Francisco, California • New Haven, Connecticut + 8 more
Source: ClinicalTrials.gov public record
Updated Dec 21, 2020 · Synced Jul 22, 2026, 11:10 PM EDT