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ClinicalTrials.gov public records Last synced Oct 5, 2026, 1:18 AM EDT

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Showing 1–19 of 19 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: 1000mg acetaminophen or placebo Clear all
Withdrawn Phase 4 Interventional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 5, 2026, 1:18 AM EDT
Terminated Phase 4 Interventional Results available

Clinical, Pharmacological and Molecular Effects of IV and Oral Acetaminophen in Adults With aSAH

NCT02549716
View directory record Official record
Conditions
Subarachnoid Hemorrhage, Stroke
Interventions
IV acetaminophen, Oral acetaminophen, Oral placebo, IV placebo
Drug
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 10, 2019 · Synced Oct 5, 2026, 1:18 AM EDT
Completed Phase 2 Interventional Results available

Effects of Inhibiting Early Inflammation in Kidney Transplant Patients

NCT02495077
View directory record Official record
Conditions
Kidney Transplant
Interventions
Infliximab, Methylprednisolone, Mycophenolate Mofetil, Tacrolimus, Thymoglobulin®, Acetaminophen, Loratadine, Placebo for Infliximab, Prednisone, Diphenhydramine
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
290 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2021
U.S. locations
13
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 8 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 5, 2026, 1:18 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 5, 2026, 1:18 AM EDT
Completed Phase 4 Interventional Results available

Analgesia Regimens Following Trans-sphenoidal Surgery for Pituitary Tumors

NCT02351700
View directory record Official record
Conditions
Pituitary Tumor, Pain
Interventions
IV Caldolor, IV Placebo
Drug
Lead sponsor
St. Joseph's Hospital and Medical Center, Phoenix
Other
Eligibility
18 Years to 79 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 21, 2021 · Synced Oct 5, 2026, 1:18 AM EDT
Completed Phase 4 Interventional Results available

Ketamine Infusion Therapy for the Management of Acute Pain in Adult Rib Fracture Patients

NCT02432456
View directory record Official record
Conditions
Wounds and Injuries, Rib Fractures
Interventions
Ketamine, Placebo, Intercostal Nerve Block, Acetaminophen, Ibuprofen, Pantoprazole, Methocarbamol, Opioid
Drug · Procedure
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older
Enrollment
153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 5, 2026, 1:18 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 5, 2026, 1:18 AM EDT
Completed Phase 4 Interventional Results available

Effect of IV Acetaminophen on Patients in the Neurocritical Care Unit

NCT01948505
View directory record Official record
Conditions
Post-operative Craniotomy Patients, Carotid Endarterectomy and Carotid Artery Stenosis Patients, Post-op Spine Patients Admitted to the NCCU, Endovascular Patients Undergoing Intracranial Intervention, Traumatic Brain Injuries NPO for at Least 12 Hours
Interventions
Intravenous acetaminophen, Placebo for IV acetaminophen
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 90 Years
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 24, 2023 · Synced Oct 5, 2026, 1:18 AM EDT
Completed Phase 4 Interventional Results available

PO vs. IV Acetaminophen Given Perioperatively for 24 hr Post-op Pain Control Following Total Hip or Knee Replacement

NCT02244619
View directory record Official record
Conditions
Post-op Pain
Interventions
Oral acetaminophen, IV acetaminophen
Drug
Lead sponsor
Kettering Health Network
Other
Eligibility
18 Years and older
Enrollment
515 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Kettering, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 24, 2017 · Synced Oct 5, 2026, 1:18 AM EDT
Terminated Phase 4 Interventional Results available

Low Pain Prediction in Cesarean Section Patients

NCT02143141
View directory record Official record
Conditions
Scheduled Cesarean Sections, Postoperative Pain Management, Side Effects
Interventions
duramorph, placebo
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older · Female only
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 10, 2018 · Synced Oct 5, 2026, 1:18 AM EDT
Completed Not applicable Interventional Results available

Pain Control After Cardiac Surgery Using Intravenous Acetaminophen

NCT01822821
View directory record Official record
Conditions
Pain
Interventions
IV Acetaminophen, Placebo
Drug
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 80 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated May 15, 2017 · Synced Oct 5, 2026, 1:18 AM EDT
Completed Phase 2 Interventional Results available

Study of CA-008 (Vocacapsaicin) in Bunionectomy Patients

NCT03599089
View directory record Official record
Conditions
Post-surgical Pain
Interventions
CA-008, Placebo, Ketorolac, Acetaminophen, Oxycodone, Bupivacaine Hydrochloride
Drug
Lead sponsor
Concentric Analgesics
Industry
Eligibility
18 Years to 75 Years
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
3
States / cities
Pasadena, California • Pasadena, Maryland • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 11, 2021 · Synced Oct 5, 2026, 1:18 AM EDT
Completed Not applicable Interventional Results available

Comparing Effectiveness of IV vs Oral Acetaminophen Given Perioperatively for Lap Choles for Pain Control,

NCT01823224
View directory record Official record
Conditions
Laparoscopic Cholecystectomy
Interventions
2 capsules Oral Tylenol 2000 mg and IV "salt water", IV tylenol 1000mg and 2 oral capsule "sugar pills"
Drug
Lead sponsor
Defense and Veterans Center for Integrative Pain Management
Other
Eligibility
18 Years and older
Enrollment
67 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Fort Bragg, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 6, 2016 · Synced Oct 5, 2026, 1:18 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 5, 2026, 1:18 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Preemptive Analgesia With Celecoxib for Acute Dental Pain Management

NCT04790812
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Celecoxib, Acetaminophen, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 45 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Oct 5, 2026, 1:18 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Use of IV Acetaminophen in the Treatment of Post Operative Pain in Patients Undergoing Craniotomy and Spine Surgery

NCT03261310
View directory record Official record
Conditions
Postoperative Pain
Interventions
Acetaminophen or Placebo
Drug
Lead sponsor
Brooke Army Medical Center
Federal
Eligibility
18 Years to 90 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Aug 25, 2017 · Synced Oct 5, 2026, 1:18 AM EDT
Terminated Phase 4 Interventional Results available

Steroids in Total Knee Arthroplasty

NCT02219581
View directory record Official record
Conditions
Postoperative Pain, Inflammation, Osteoarthritis
Interventions
Dexamethasone 10 mg, Dexamethasone 20 mg, Standard multimodal pain management regimen, Placebo
Drug
Lead sponsor
Thomas L Bradbury
Other
Eligibility
18 Years to 100 Years
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Tucker, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 4, 2022 · Synced Oct 5, 2026, 1:18 AM EDT
Completed Phase 2 Interventional Results available

PECS Block vs. Multimodal Analgesia for Prevention of Persistent Postoperative Pain in Breast Surgery

NCT03084536
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Female, Cancer of Breast
Interventions
Bupivacaine, Gabapentin, Celecoxib, Acetaminophen, Midazolam, Fentanyl
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
134 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 24, 2024 · Synced Oct 5, 2026, 1:18 AM EDT
Terminated Phase 4 Interventional Results available

Multi-dose Acetaminophen for Patients Undergoing General Anesthesia

NCT02832687
View directory record Official record
Conditions
Recovery Following Cholecystectomy
Interventions
Acetaminophen, normal saline
Drug
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
3
States / cities
Newark, New Jersey • Brooklyn, New York
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Oct 5, 2026, 1:18 AM EDT