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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Acetaminophen 1000mg Clear all
Completed Phase 4 Interventional

Multimodal Analgesia Effect on Post Surgical Patient

NCT04240626
View directory record Official record
Conditions
Obesity, Morbid, Surgery, Bariatric Surgery Candidate
Interventions
Neurontin, Dilaudid Injectable Product, Marcaine Injectable Product, Oxycodone Hydrochloride, Hycet 7.5Mg-325Mg/15Ml Solution, Zofran Injection, Scopolamine patch, Ativan, Flexeril Oral Product, Tylenol Suspension
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
35 Years to 65 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Sep 13, 2026 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 3 Interventional Results available

Study Evaluating A Novel Ibuprofen Formulation In The Treatment Of Dental Pain

NCT01216163
View directory record Official record
Conditions
Pain
Interventions
Novel Ibuprofen, Acetaminophen, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
16 Years to 40 Years
Enrollment
218 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 19, 2012 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Results available

Improving Post-Operative Pain and Recovery in Gynecologic Surgery

NCT04175509
View directory record Official record
Conditions
Postoperative Pain, Opioid Use, Acetaminophen
Interventions
Rectal acetaminophen, Intravenous acetaminophen
Drug
Lead sponsor
Aultman Health Foundation
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Canton, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 19, 2022 · Synced Sep 28, 2026, 11:58 PM EDT
Not listed Phase 3 Interventional

Acetaminophen Given Per Os and Intravenous in Sinus Surgery

NCT03295214
View directory record Official record
Conditions
Acetaminophen
Interventions
Acetaminophen
Drug
Lead sponsor
Massachusetts Eye and Ear Infirmary
Other
Eligibility
18 Years and older
Enrollment
124 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 9, 2019 · Synced Sep 28, 2026, 11:58 PM EDT
Recruiting Phase 4 Interventional

NonNarcotic Pain Control in Percutaneous Needle Tenotomy of Elbow

NCT06373978
View directory record Official record
Conditions
Elbow Pain, Chronic Pain
Interventions
Diclofenac, Tramadol, Acetaminophen
Drug · Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
2
States / cities
Coral Springs, Florida • Avon, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 28, 2026, 11:58 PM 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 20, 2021 · Synced Sep 28, 2026, 11:58 PM 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 3, 2022 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Prospective Randomized Controlled Trial of an Enhanced Recovery Protocol for Anorectal Surgery

NCT03738904
View directory record Official record
Conditions
Anorectal Disorder
Interventions
ERAS, Standard of care
Combination Product
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years to 70 Years
Enrollment
111 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 17, 2023 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Results available

RCT (Randomized Controlled Trial) of IV Acetaminophen for Post Cesarean Pain Relief

NCT02046382
View directory record Official record
Conditions
Cesarean Section, Pain, Postoperative
Interventions
IV Acetaminophen, Placebo
Drug
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years and older · Female only
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

IV Acetaminophen for Postoperative Pain Analgesia After Laparoscopic Hysterectomy

NCT02400580
View directory record Official record
Conditions
Pain
Interventions
IV acetaminophen, placebo
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years to 75 Years · Female only
Enrollment
183 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 12, 2018 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Assessing Efficacy of Intravenous Acetaminophen for Perioperative Pain Control for Oocyte Retrieval

NCT03073980
View directory record Official record
Conditions
Infertility, Female, Pain, Postoperative
Interventions
IV Acetaminophen, PO Acetaminophen, Placebo IV Acetaminophen, Placebo PO Acetaminophen
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 44 Years · Female only
Enrollment
161 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 25, 2022 · Synced Sep 28, 2026, 11:58 PM 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 4, 2020 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 2 Interventional Results available

Rituximab and Belimumab for Lupus Nephritis

NCT02260934
View directory record Official record
Conditions
Lupus Nephritis
Interventions
Rituximab, Cyclophosphamide, Prednisone, Methylprednisolone, Diphenhydramine, Acetaminophen, Belimumab
Biological · Drug
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
15
States / cities
Birmingham, Alabama • Los Angeles, California • San Francisco, California + 10 more
Source: ClinicalTrials.gov public record
Updated Nov 30, 2020 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Not applicable Interventional

Factors Affecting the Speed of Recovery After ACL Reconstruction

NCT03770806
View directory record Official record
Conditions
Anterior Cruciate Ligament Injury, ACL Injury, ACL - Anterior Cruciate Ligament Rupture
Interventions
Femoral Nerve Block, Adductor Nerve Block, No Block
Procedure · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 75 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Dec 9, 2018 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Results available

RCT (Randomized Controlled Trial) of IV Acetaminophen for Post Operative Vaginal Reconstruction Pain

NCT02043704
View directory record Official record
Conditions
Post Operative Pain
Interventions
IV Acetaminophen
Drug
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 15, 2018 · Synced Sep 28, 2026, 11:58 PM 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 9, 2018 · Synced Sep 28, 2026, 11:58 PM 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 25, 2017 · Synced Sep 28, 2026, 11:58 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Optimizing Pain Control in Transurethral Resection of the Prostate

NCT04102566
View directory record Official record
Conditions
Pain, BPH With Urinary Obstruction, BPH With Urinary Obstruction With Other Lower Urinary Tract Symptoms
Interventions
Ibuprofen 600 mg, Education
Drug · Behavioral
Lead sponsor
Benaroya Research Institute
Other
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 26, 2019 · Synced Sep 28, 2026, 11:58 PM 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 2, 2016 · Synced Sep 28, 2026, 11:58 PM EDT
Not listed Phase 4 Interventional

Oral Acetaminophen Use for Pain Reduction in Electrophysiology Procedures

NCT03702023
View directory record Official record
Conditions
Post Electrophysiology Procedure Pain
Interventions
Acetaminophen, Placebo Oral Tablet
Drug
Lead sponsor
Ascension Health
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Grand Blanc, Michigan
Source: ClinicalTrials.gov public record
Updated Jul 1, 2019 · Synced Sep 28, 2026, 11:58 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

A Study Comparing the Efficacy and Safety of Orally Administered Ibuprofen and Placebo in Delayed Onset Muscle Soreness

NCT02113566
View directory record Official record
Conditions
Delayed Onset Muscle Soreness
Interventions
Acetaminophen 1000mg
Drug
Lead sponsor
Jean Brown Research
Other
Eligibility
18 Years to 55 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 1, 2015 · Synced Sep 28, 2026, 11:58 PM EDT
No Longer Available No phase listed Expanded access

Expanded Access Single Named Patient Program With Elotuzumab (BMS-901608) for the Treatment of Patient R-A With Relapsed/Refractory Multiple Myeloma

NCT02541643
View directory record Official record
Conditions
Multiple Myeloma
Interventions
Elotuzumab
Drug
Lead sponsor
Sundar Jagannath
Other
Eligibility
18 Years and older
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 3, 2015 · Synced Sep 28, 2026, 11:58 PM EDT
Terminated Early Phase 1 Interventional

PVB vs Ketamine/Lidocaine in Rib Fracture Patients

NCT04413799
View directory record Official record
Conditions
Rib Fractures, Rib Trauma, Rib Fracture Multiple, Pain, Acute
Interventions
lidocaine, ketamine intravenous infusion, paravertebral block with ropivicaine
Combination Product · Drug
Lead sponsor
George Washington University
Other
Eligibility
18 Years to 80 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jun 21, 2025 · Synced Sep 28, 2026, 11:58 PM EDT
Recruiting Not applicable Interventional

ERAS Protocols in Breast Conserving Surgery

NCT06938581
View directory record Official record
Conditions
Breast Cancer, Postoperative Recovery
Interventions
ERAS Protocol, Standard Perioperative Care
Other
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years and older
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Sep 28, 2026, 11:58 PM EDT