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 are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 4, 2026, 2:55 PM 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 28 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Placebo PO Acetaminophen Clear all
Completed Phase 4 Interventional Results available

Intravenous Versus Oral Acetaminophen in Primary Total Hip Arthroplasty

NCT02839876
View directory record Official record
Conditions
Osteoarthritis, Acetaminophen, Arthroplasty, Hip Replacement
Interventions
Intravenous acetaminophen, Oral acetaminophen
Drug
Lead sponsor
Duke University
Other
Eligibility
56 Years to 85 Years
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 8, 2021 · Synced Sep 4, 2026, 2:55 PM EDT
Completed Not applicable Interventional Results available

High Pain Intervention in Cesarean Sections

NCT01298778
View directory record Official record
Conditions
Other Chronic Postoperative Pain
Interventions
Duramorph 150, Acetaminophen, Duramorph 300
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
69 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 9, 2018 · Synced Sep 4, 2026, 2:55 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 4, 2026, 2:55 PM 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 15, 2018 · Synced Sep 4, 2026, 2:55 PM 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 23, 2017 · Synced Sep 4, 2026, 2:55 PM EDT
Recruiting Phase 4 Interventional

Precision Pain Management - A Randomized Clinical Trial Assessing the Efficacy of Suzetrigine on Postoperative Analgesia Among Surgical Patients at Higher Risk for Persistent Postoperative Opioid Use (POU)

NCT07672015
View directory record Official record
Conditions
Opioid Consumption, Postoperative
Interventions
Suzetrigine, Standard Care (in control arm)
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 4, 2026, 2:55 PM 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 23, 2023 · Synced Sep 4, 2026, 2:55 PM EDT
Active, not recruiting Phase 2 Interventional Accepts healthy volunteers

Evaluation of Broccoli Seed and Sprout Extract for Detoxification of Carcinogens in Firefighters

NCT06009926
View directory record Official record
Conditions
Hematopoietic and Lymphatic System Neoplasm, Malignant Solid Neoplasm, Occupational Malignant Neoplasm
Interventions
Acetaminophen, Biospecimen Collection, Broccoli Sprout/Broccoli Seed Extract Supplement, Placebo Administration, Questionnaire Administration, Training
Drug · Procedure · Dietary Supplement + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 4, 2026, 2:55 PM EDT
Completed Phase 4 Interventional Results available

Gabapentin for Pain Control After Osmotic Dilator Insertion and Prior to D&E Procedure: a Randomized Controlled Trial

NCT03080493
View directory record Official record
Conditions
Abortion, Induced, Cervical Preparation, Pain
Interventions
Gabapentin 600mg, Placebo oral capsule, acetaminophen/codeine and ibuprofen
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Apr 13, 2020 · Synced Sep 4, 2026, 2:55 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 Sep 4, 2026, 2:55 PM EDT
Not yet recruiting Phase 4 Interventional

Comparing Pain Improvement for Intravenous Versus Oral Acetaminophen in Acute Pelvic Pain

NCT07595302
View directory record Official record
Conditions
Pelvic Pain
Interventions
Acetaminophen 1000mg PO, IV Acetaminophen 1000mg, IV Placebo, PO Placebo
Drug · Other
Lead sponsor
Montefiore Medical Center
Other
Eligibility
16 Years to 50 Years · Female only
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Sep 4, 2026, 2:55 PM EDT
Not listed Phase 3 Interventional

Randomized Trial of Intraoperative IV Versus Preoperative Oral Acetaminophen During Ambulatory Lumbar Discectomy

NCT04574778
View directory record Official record
Conditions
Pain, Postoperative, Spine Surgery
Interventions
Acetaminophen
Drug
Lead sponsor
Rothman Institute Orthopaedics
Other
Eligibility
18 Years and older
Enrollment
82 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 11, 2024 · Synced Sep 4, 2026, 2:55 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Combined Medication for Improved Analgesia in Superficial Pain

NCT02194088
View directory record Official record
Conditions
Pain
Interventions
Diclofenac and Atropine combination drug, Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 40 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 2, 2018 · Synced Sep 4, 2026, 2:55 PM EDT
Not listed Not applicable Interventional

Prospective, Randomized, Double Blind Study Comparing IV vs PO Acetaminophen in Patients Undergoing Lumbar Discectomy

NCT02067442
View directory record Official record
Conditions
Pain
Interventions
oral acetaminophen, intravenous acetaminophen
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years to 65 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 17, 2015 · Synced Sep 4, 2026, 2:55 PM 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 10, 2021 · Synced Sep 4, 2026, 2:55 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 4, 2026, 2:55 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Determine the Clinical Advantage of IV vs PO Acetaminophen

NCT03558555
View directory record Official record
Conditions
Inguinal Hernia
Interventions
Acetaminophen IV Soln, Oral Acetaminophen, Placebo Pills, Saline
Drug
Lead sponsor
Yan Lai
Other
Eligibility
18 Years to 75 Years
Enrollment
103 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 9, 2020 · Synced Sep 4, 2026, 2:55 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

A Cohort Study Evaluating the Efficacy of PO Magnesium in the Treatment of Acute Traumatic Brain Injury in Adolescents

NCT03475693
View directory record Official record
Conditions
Concussion Post Syndrome
Interventions
Magnesium Oxide, Acetaminophen, Zofran ODT 4 MG Disintegrating Oral Tablet
Drug
Lead sponsor
Corewell Health South
Other
Eligibility
12 Years to 18 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Saint Joseph, Michigan
Source: ClinicalTrials.gov public record
Updated Nov 28, 2024 · Synced Sep 4, 2026, 2:55 PM EDT
Recruiting Phase 3 Interventional

High-dose Prophylactic Gabapentin (HOPE) vs. Placebo to Prevent Opioid Use for Oral Mucositis Pain During Concurrent Chemoradiation for Head and Neck Cancer

NCT06992427
View directory record Official record
Conditions
Head and Neck Squamous Cell Carcinoma, Stage I Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage II Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage III Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage IV Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8
Interventions
Gabapentin, Placebo, Chemotheraphy, Radiation Therapy, Analgesic Agent, Biospecimen Collection, Survey Administration
Drug · Radiation · Procedure + 1 more
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
228 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
200
States / cities
Gilbert, Arizona • Peoria, Arizona • Phoenix, Arizona + 162 more
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 4, 2026, 2:55 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

A Comparison of IV Versus PO Acetaminophen Postoperatively for Opioid Consumption After Cesarean Section

NCT04290208
View directory record Official record
Conditions
Postoperative Pain, Cesarean Section, Acetaminophen
Interventions
Acetaminophen, Placebos
Drug
Lead sponsor
Main Line Health
Other
Eligibility
18 Years and older · Female only
Enrollment
130 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Wynnewood, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 27, 2020 · Synced Sep 4, 2026, 2:55 PM EDT
Completed Not applicable Interventional Results available

Intraoperative and Post-operative Analgesic Effect of IV Acetaminophen for Sinus Surgery

NCT01608308
View directory record Official record
Conditions
Chronic Sinusitis
Interventions
IV Acetaminophen, Placebo
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 68 Years
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 15, 2015 · Synced Sep 4, 2026, 2:55 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 4, 2026, 2:55 PM EDT
Completed Phase 4 Interventional Results available

Preoperative IV Versus Oral Acetaminophen

NCT03468920
View directory record Official record
Conditions
Pain, Postoperative
Interventions
IV Acetaminophen, PO Acetaminophen, PO Placebo, IV Solution Placebo
Drug
Lead sponsor
TriHealth Inc.
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 13, 2019 · Synced Sep 4, 2026, 2:55 PM EDT
Recruiting Phase 3 Interventional

Post-Op Pain Control for Prophylactic Intramedullary Nailing.

NCT03823534
View directory record Official record
Conditions
Bone Metastases, Lymphoma, Multiple Myeloma, Opioid Use, Pain
Interventions
Ketorolac, Normal saline, Acetaminophen, Oxycodone Acetaminophen, Morphine, Hydrocodone/Acetaminophen, Oxycodone
Drug
Lead sponsor
St. Louis University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 4, 2026, 2:55 PM EDT