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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Experimental paracetamol Clear all
Withdrawn Phase 1 Interventional Accepts healthy volunteers

A Comparison of Plasma Concentrations of Hydrocodone and Acetaminophen After Administration of a New and a Marketed Tablet Formulation Under Fasted and Fed Conditions in Healthy Adults

NCT03137017
View directory record Official record
Conditions
Opioid-Related Disorders, Pain, Acute, Pain, Postoperative
Interventions
Norco 5Mg-325Mg Tablet, GRT7014 - Abuse Deterrent Tablet
Drug
Lead sponsor
Grünenthal GmbH
Industry
Eligibility
18 Years to 55 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Lenexa, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 20, 2017 · Synced Sep 27, 2026, 4:35 PM EDT
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 20, 2024 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Not applicable Interventional

Effect of Biofreeze® Versus Placebo on Acute Neck Pain, Disability, and Range of Motion

NCT03157349
View directory record Official record
Conditions
Acute Pain, Neck Pain
Interventions
Biofreeze, Placebo
Other
Lead sponsor
Sport and Spine Rehab Clinical Research Foundation
Other
Eligibility
18 Years to 65 Years
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Landover, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 31, 2019 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Satisfaction Following Cesarean Section

NCT03355248
View directory record Official record
Conditions
Pain, Postoperative, Cesarean Section Complications, Postpartum Disorder, Opioid Use
Interventions
Oxycodone Acetaminophen
Other
Lead sponsor
ProMedica Health System
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Toledo, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 17, 2020 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Phase 2 Interventional

Preeclampsia And Nonsteroidal Drugs for Analgesia: a Randomized Non Inferiority Trial

NCT03978767
View directory record Official record
Conditions
Preeclampsia Severe, Preeclampsia Postpartum
Interventions
Ibuprofen 600 mg, Ketorolac, Acetaminophen, Oxycodone
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
Female only
Enrollment
287 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Sep 27, 2026, 4:35 PM EDT
Terminated Phase 3 Interventional

Perioperative Analgesia on Postoperative Opioid Usage and Pain Control in H&N Cancer Surgery

NCT04176419
View directory record Official record
Conditions
Postoperative Pain Control, Opioid Consumption
Interventions
Ketamine, Placebo Ketamine, Lidocaine, Placebo Lidocaine, Acetaminophen, Placebo Acetaminophen, Gabapentin, Placebo Gabapentin, Celecoxib, Placebo Celecoxib
Drug
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 11, 2024 · Synced Sep 27, 2026, 4:35 PM EDT
Terminated Phase 2Phase 3 Interventional

Opioid-Free Pain Control Regimen Following Robotic Radical Prostatectomy

NCT05597878
View directory record Official record
Conditions
Pain Management, Opioid Use, Prostate Cancer
Interventions
Oxycodone, Acetaminophen, Ketamine, Ketorolac
Drug
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
40 Years to 75 Years · Male only
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Sep 27, 2026, 4:35 PM EDT
Recruiting Phase 1Phase 2 Interventional

Substudy 06D: Combination Therapies in Second Line (2L) Gastroesophageal Adenocarcinoma (MK-3475-06D/Keymaker-U06)

NCT06445972
View directory record Official record
Conditions
Gastroesophageal Junction, Gastroesophageal Adenocarcinoma, Esophageal Neoplasms, Esophageal Cancer
Interventions
Ramucirumab, Paclitaxel, Sacituzumab Tirumotecan, Rescue Medications, HER3-DXd
Biological · Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
210 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
8
States / cities
Tucson, Arizona • Los Angeles, California • Louisville, Kentucky + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 27, 2026, 4:35 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 27, 2026, 4:35 PM EDT
Completed Phase 2 Interventional Results available

KEYMAKER-U01 Substudy 3: Efficacy and Safety Study of Pembrolizumab (MK-3475) When Used With Investigational Agents in Participants With Advanced Non-small Cell Lung Cancer (NSCLC), Previously Treated With Anti-programmed Cell Death Receptor Ligand 1 (PD-L1) Therapy (MK-3475-01C/KEYMAKER-U01C)

NCT04165096
View directory record Official record
Conditions
Carcinoma, Non-Small-Cell Lung
Interventions
Pembrolizumab, Boserolimab, MK-4830, diphenhydramine, acetaminophen, MK-0482
Biological · Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
128 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
18
States / cities
Gilbert, Arizona • Duarte, California • San Francisco, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A Randomized-controlled Trial of Post-operative Opiate Quantities After Urogynecologic Surgery

NCT03319277
View directory record Official record
Conditions
Postoperative Pain, Opioid Use
Interventions
Decreased opiate prescription, Routine opiate prescription
Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 30, 2019 · Synced Sep 27, 2026, 4:35 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Impact of Probiotics on Drug, Vitamin, and Hormone Metabolism

NCT04281407
View directory record Official record
Conditions
Metabolism
Interventions
Visbiome
Dietary Supplement
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 40 Years · Male only
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 23, 2020 · Synced Sep 27, 2026, 4:35 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Dry Needling for Spasticity in Stroke

NCT04535479
View directory record Official record
Conditions
Stroke, Muscle Spasticity
Interventions
Dry Needling
Behavioral
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2027
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Sep 27, 2026, 4:35 PM EDT
Recruiting Phase 1Phase 2 Interventional

Opioid Drug Interaction Study

NCT06757140
View directory record Official record
Conditions
Drug Interactions, Drug Kinetics
Interventions
Alprazolam, Oxycodone, Placebo
Drug
Lead sponsor
Shanna Babalonis, PhD
Other
Eligibility
18 Years to 55 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated May 13, 2026 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Reduction in Pain Intensity Following IV or Oral Pain-relieving Products

NCT02678416
View directory record Official record
Conditions
Pain
Interventions
IV Acetaminophen (Treatment A), Oral Acetaminophen (Treatment B), Placebo (Treatment C), Morphine (Treatment D)
Drug · Other
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
79 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 4, 2020 · Synced Sep 27, 2026, 4:35 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 27, 2026, 4:35 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Hip Arthroscopy Postoperative Opioid Demands

NCT04094701
View directory record Official record
Conditions
Opioid Use, Pain, Femoral Acetabular Impingement, Labral Tear, Glenoid
Interventions
Control Group Regimen, Opioid reduced regimen
Other
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
170 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2028
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 27, 2026, 4:35 PM EDT
Terminated Phase 2Phase 3 Interventional Results available

Paracetamol With Caffeine to Treat Episodic Tension Type Headache

NCT01755702
View directory record Official record
Conditions
Headache, Tension-Type
Interventions
Placebo, Experimental paracetamol + caffeine formulation, ibuprofen marketed formulation, Paracetamol marketed formulation
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
7
States / cities
Pembroke Pines, Florida • Springfield, Massachusetts • Wellesley Hills, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 26, 2015 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Pharmacokinetic Study Investigating the Rate and Extent of Paracetamol Absorption of Three Experimental Sustained Release Pediatric Suspensions

NCT01476215
View directory record Official record
Conditions
Healthy Subjects
Interventions
Paracetamol fast dissolution suspension, Paracetamol medium dissolution suspension, Paracetamol slow dissolution suspension, Paracetamol
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
19 Years to 50 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Nov 23, 2014 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Phase 2 Interventional Results available

Targeting the IPA and Matching for the Non-Inherited Maternal Antigen for Haplo-Cord Transplantation

NCT01810588
View directory record Official record
Conditions
Hematologic Malignancies
Interventions
CliniMACS® CD34 Reagent System, Fludarabine, Melphalan, anti-thymocyte globulin (rabbit), Rituximab, Total Body Irradiation, Mycophenolate Mofetil, Tacrolimus
Device · Drug · Radiation
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2026
U.S. locations
2
States / cities
Chicago, Illinois • New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Combined Spinal-Epidural Versus Traditional Labor Epidural

NCT00151346
View directory record Official record
Conditions
Labour Pain
Interventions
Bupivacaine and Fentanyl (for CSE), Bupivacaine and Fentanyl (for traditional epidural)
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
127 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 17, 2008 · Synced Sep 27, 2026, 4:35 PM EDT
Not listed Phase 4 Interventional

US-guided SAPB for Rib Fractures in the ED

NCT03619785
View directory record Official record
Conditions
Rib Fractures, Rib Fracture Multiple
Interventions
Bupivacaine, Fentanyl, morphine, hydromorphone, hydrocodone, acetaminophen, ketorolac, gabapentin, ketamine, ibuprofen
Drug
Lead sponsor
Andrew A Herring
Other
Eligibility
18 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 27, 2026, 4:35 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pharmacokinetic Study Investigating the Extent of Paracetamol Absorption From a New Formulation of Paracetamol Compared With Panadol®

NCT01540734
View directory record Official record
Conditions
Healthy Subjects
Interventions
Marketed paracetamol, Experimental paracetamol formulation
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 55 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Nov 23, 2014 · Synced Sep 27, 2026, 4:35 PM EDT
Terminated Phase 2 Interventional Results available

Randomized HaploCord Blood Transplantation vs. Double Umbilical Cord Blood Transplantation for Hematologic Malignancies

NCT01745913
View directory record Official record
Conditions
Acute Myelogenous Leukemia, Myelodysplastic Syndrome, Acute Lymphocytic Leukemia, Hodgkin's Lymphoma, Non-Hodgkin's Lymphoma
Interventions
CliniMACS® CD34 Reagent System, Fludarabine, Melphalan, Rabbit ATG, Double Umbilical Cord Blood Transplantation, Haplo-Identical Cord Transplantation
Device · Drug · Procedure
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 10, 2018 · Synced Sep 27, 2026, 4:35 PM EDT