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ClinicalTrials.gov public records Last synced Oct 26, 2026, 8:23 AM EDT

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Showing 457–480 of 948 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: acetominophen Clear all
Not listed Phase 3 Interventional

Selective Early Medical Treatment of Patent Ductus Arteriosus in Extremely Low Gestational Age Infants: A Pilot RCT

NCT05011149
View directory record Official record
Conditions
Patent Ductus Arteriosus After Premature Birth
Interventions
Ibuprofen
Drug
Lead sponsor
IWK Health Centre
Other
Eligibility
Up to 72 Hours
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
3
States / cities
Orange, California • San Diego, California • Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Jun 21, 2024 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 3 Interventional Results available

Safety and Efficacy of COV795 in Moderate to Severe Post-Operative Bunionectomy Pain With an Open-label Extension

NCT01484652
View directory record Official record
Conditions
Pain, Postoperative, Bunion
Interventions
COV795, Placebo
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 75 Years
Enrollment
329 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
5
States / cities
Bakersfield, California • Pasadena, California • Pasadena, Maryland + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 21, 2016 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Perioperative Ketamine for Pain With Gastric Bypass

NCT03448068
View directory record Official record
Conditions
Laparoscopic Gastric Bypass Surgery, Ketamine
Interventions
Ketamine, Standard therapy
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 69 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 29, 2021 · Synced Oct 26, 2026, 8:23 AM EDT
Terminated Not applicable Interventional

Pudendal vs Caudal Block for Pediatric Penile Surgery

NCT04840654
View directory record Official record
Conditions
Postoperative Pain
Interventions
Caudal Block, Pudendal Block
Procedure
Lead sponsor
University of Chicago
Other
Eligibility
6 Months to 3 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 24, 2025 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 3 Interventional

A Study of Rizatriptan Co-Administered With Acetaminophen for the Treatment of Acute Migraine

NCT00300924
View directory record Official record
Conditions
Migraine
Interventions
Rizatriptan co-administered with Acetaminophen
Drug
Lead sponsor
Diamond Headache Clinic
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
7
States / cities
San Francisco, California • Chicago, Illinois • Kalamazoo, Michigan + 4 more
Source: ClinicalTrials.gov public record
Updated May 28, 2008 · Synced Oct 26, 2026, 8:23 AM EDT
Withdrawn Phase 4 Interventional

Ketamine in Colorectal Surgery

NCT02785003
View directory record Official record
Conditions
Acute Pain, Pain, Postoperative, Colorectal Surgery
Interventions
Placebo, Ketamine, Acetaminophen, Opioid, Alvimopan
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 26, 2017 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Not applicable Interventional

Post-Operative Pain Control Following Shoulder Surgery

NCT04622839
View directory record Official record
Conditions
Shoulder Pain
Interventions
Tylenol and NSAIDS (Ibuprofen, diclofenac)
Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years to 90 Years
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Columbia, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 16, 2023 · Synced Oct 26, 2026, 8:23 AM EDT
Terminated Phase 4 Interventional

Pain Control After Minimally Invasive Coronary Artery Bypass Grafting

NCT01770236
View directory record Official record
Conditions
Postoperative Pain, Medication Side Effects, Narcotic Requirement
Interventions
IV acetaminophen
Drug
Lead sponsor
Gundersen Lutheran Medical Foundation
Other
Eligibility
18 Years to 90 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
La Crosse, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 21, 2016 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 4 Interventional Results available

Early Diuresis Following Colorectal Surgery

NCT02351934
View directory record Official record
Conditions
Colorectal Disorders
Interventions
Furosemide, Celecoxib, Gabapentin
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
123 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 7, 2018 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Bioavailability and Food Effect of Selumetinib (AZD6244) in Healthy Male Participants

NCT03649165
View directory record Official record
Conditions
Neurofibromatosis Type 1 (NF1)-Related Plexiform Neurofibromas (PNs), Healthy Participants
Interventions
Treatment A, Treatment B, Treatment C, Treatment D, Acetaminophen
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 8, 2018 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 2 Interventional Results available

A Study Evaluating Efficacy and Safety of VX-548 for Acute Pain After a Bunionectomy

NCT04977336
View directory record Official record
Conditions
Acute Pain
Interventions
VX-548, HB/APAP, Placebo (matched to VX-548), Placebo (matched to HB/APAP)
Drug
Lead sponsor
Vertex Pharmaceuticals Incorporated
Industry
Eligibility
18 Years to 75 Years
Enrollment
274 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
12
States / cities
Sheffield, Alabama • Phoenix, Arizona • Anaheim, California + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2025 · Synced Oct 26, 2026, 8:23 AM EDT
Recruiting Not applicable Interventional

Open-label Placebo (COLP) for Pain in Adolescent Idiopathic Scoliosis (AIS) Surgery+Surgical Treatment of Idiopathic Scoliosis

NCT06365892
View directory record Official record
Conditions
Adolescent Idiopathic Scoliosis (AIS)
Interventions
open-label placebo, Treatment as usual
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
10 Years to 18 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 13, 2026 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Not applicable Interventional

TENS Unit To Decrease Pain After Laminaria Insertion

NCT06529003
View directory record Official record
Conditions
Second Trimester Abortion
Interventions
Transcutaneous Electrical Nerve Stimulation (TENS) unit, Placebo
Device
Lead sponsor
Queen's Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Oct 26, 2026, 8:23 AM EDT
Recruiting No phase listed Observational

Measuring Analgesic Interventions

NCT03794362
View directory record Official record
Conditions
Pain
Interventions
Not listed
Lead sponsor
Julia Finkel
Other
Eligibility
7 Years to 21 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Oct 26, 2026, 8:23 AM EDT
Withdrawn Not applicable Interventional Accepts healthy volunteers

A Randomized Crossover Study to Determine the Pharmacokinetics of Intranasally Administered Acetaminophen in Healthy Adults

NCT00855049
View directory record Official record
Conditions
Pharmacokinetics
Interventions
Acetaminophen
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 45 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 22, 2019 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Donor Alloantigen Reactive Tregs (darTregs) for Calcineurin Inhibitor (CNI) Reduction

NCT02474199
View directory record Official record
Conditions
Liver Transplant Recipient, Living Donor (of the Respective Liver Transplant Recipient)
Interventions
darTregs, Acetaminophen, Diphenhydramine, Immunosuppression (IS) Withdrawal, Study Mandated Procedures
Biological · Drug · Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years to 70 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
3
States / cities
San Francisco, California • Chicago, Illinois • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 9, 2021 · Synced Oct 26, 2026, 8:23 AM EDT
Terminated Phase 4 Interventional Results available

CT Guided Injection for Low Back Radiculopathy: A Randomized Clinical Trial

NCT01267825
View directory record Official record
Conditions
Disc Herniation, Lumbosacral Radiculopathy
Interventions
CT-guided corticosteroid+ bupivicaine, Standard medical care
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
21 Years to 50 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 31, 2018 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 2Phase 3 Interventional

Low-Dose Naltrexone and Acetaminophen Combination and Sumatriptan in the Acute Treatment of Migraine With Nausea

NCT03185143
View directory record Official record
Conditions
Migraine With and Without Aura
Interventions
Naltrexone and Acetaminophen Combination, Sumatriptan 100 mg, Placebo
Drug
Lead sponsor
Allodynic Therapeutics, Inc
Industry
Eligibility
18 Years to 65 Years
Enrollment
36 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 14, 2021 · Synced Oct 26, 2026, 8:23 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 26, 2026, 8:23 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Controlled Trial to Determine Most Effective Post-Operative Analgesia After Third Molar Extraction

NCT06484439
View directory record Official record
Conditions
Pain, Post-operative, Third Molar, Oral Surgery, Pain, Acute
Interventions
Ketorolac, Oxycodone, Acetaminophen, Ibuprofen, Hydrocodone
Drug
Lead sponsor
United States Naval Medical Center, San Diego
Federal
Eligibility
18 Years to 44 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2021
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Jul 10, 2024 · Synced Oct 26, 2026, 8:23 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 26, 2026, 8:23 AM EDT
Withdrawn Phase 2 Interventional

Efficacy of Acetaminophen in Posterior Fossa Surgery

NCT02532322
View directory record Official record
Conditions
Arnold-Chiari Malformation, Posterior Fossa Tumors
Interventions
IV acetaminophen, normal saline
Drug
Lead sponsor
Children's National Research Institute
Other
Eligibility
2 Years to 12 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Apr 8, 2021 · Synced Oct 26, 2026, 8:23 AM EDT
Completed No phase listed Observational Results available

Total Hip Arthroplasty Outcomes With Regional and Multimodal Analgesia

NCT02186795
View directory record Official record
Conditions
Arthroplasty, Replacement, Hip, Arthritis
Interventions
Not listed
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
117 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Mar 22, 2019 · Synced Oct 26, 2026, 8:23 AM EDT
Completed Phase 4 Interventional

Premedication to Reduce Discomfort With Screening Mammography

NCT00382083
View directory record Official record
Conditions
Breast Pain
Interventions
1000 mg acetaminophen, 800 mg ibuprofen, 1 oz 4% lidocaine gel
Drug
Lead sponsor
Mountain States Tumor and Medical Research Institute
Other
Eligibility
30 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
1
States / cities
Boise, Idaho
Source: ClinicalTrials.gov public record
Updated Sep 28, 2006 · Synced Oct 26, 2026, 8:23 AM EDT