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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Postop acetaminophen IV Clear all
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Multimodal Pain Management After Robotic-Assisted Total Laparoscopic Hysterectomy

NCT04429022
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Gabapentin, Acetaminophen, Celecoxib, Ketorolac, Paracervical block with ropivacaine, Local anesthetic injection with ropivacaine at abdominal laparoscopic port sites, Hydromorphone, Oxycodone
Drug · Procedure
Lead sponsor
State University of New York at Buffalo
Other
Eligibility
25 Years to 90 Years · Female only
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Williamsville, New York
Source: ClinicalTrials.gov public record
Updated Jul 31, 2023 · Synced Sep 24, 2026, 4:05 PM EDT
Recruiting Phase 4 Interventional

Epidural Analgesia Versus Opioid-sparing Analgesia for Open Ventral Hernia Repair With Transversus Abdominis Release

NCT07840183
View directory record Official record
Conditions
Ventral Hernia, Ventral Hernia Repair, Postoperative Pain
Interventions
Bupivicaine, Fentanyl, Thoracic epidural analgesia, Hydromorphone, Acetaminophen, Ketorolac, magnesium sulfate, Tramadol, Gabapentin, Cyclobenzaprine, transversus abdominis plane block
Drug · Device · Procedure
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 24, 2026, 4:05 PM EDT
Completed Phase 4 Interventional Results available

Analgesia After Total Knee Arthroplasty: Peri-Articular Injection Versus Epidural + Femoral Nerve Blockade

NCT01335542
View directory record Official record
Conditions
Readiness to Discharge
Interventions
Peri-Articular Injection, Epidural Pathway (PCEA+FNB)
Procedure
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years to 85 Years
Enrollment
91 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 13, 2022 · Synced Sep 24, 2026, 4:05 PM EDT
Not listed Not applicable Interventional

Efficacy of IV Acetaminophen in Acute Post-Operative Pain Control in Laparoscopic Roux-en-Y Gastric Bypass Surgery (LRYGBP) Patients

NCT01460667
View directory record Official record
Conditions
Morbid Obesity
Interventions
IV acetaminophen, IV normal saline
Drug
Lead sponsor
McLaren Regional Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
85 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
1
States / cities
Flint, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 26, 2011 · Synced Sep 24, 2026, 4:05 PM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

A Prospective Pilot Study of a Non-Narcotic Post-Operative Course After Colectomy

NCT05200806
View directory record Official record
Conditions
Analgesia, Post-Operative Pain, Breakthrough Pain, Colectomy
Interventions
Non-Narcotic ERAS Post-Operative Pain Management
Other
Lead sponsor
University of Vermont
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Oct 13, 2022 · Synced Sep 24, 2026, 4:05 PM EDT
Completed Phase 4 Interventional Results available

Efficacy of Oral vs. Intravenous Acetaminophen

NCT02643394
View directory record Official record
Conditions
Postoperative Pain
Interventions
Oral Acetaminophen, Intravenous acetaminophen
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2018
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Apr 20, 2020 · Synced Sep 24, 2026, 4:05 PM EDT
Withdrawn Phase 4 Interventional

A Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study of the Relationship Between Intraoperative Intravenous Acetaminophen and Postoperative Opioid Avoidance for Ambulatory Surgical Procedures

NCT01231191
View directory record Official record
Conditions
Postoperative Pain, Intraoperative and Postoperative Opioid Requirements
Interventions
Intravenous acetaminophen, Intravenous placebo
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Mar 7, 2012 · Synced Sep 24, 2026, 4:05 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Analgesic Efficacy of Intravenous Acetaminophen After Video-assisted Thoracic Surgery

NCT01783236
View directory record Official record
Conditions
Lung Tumor
Interventions
IV Acetaminophen, Saline Placebo
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years to 99 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 10, 2017 · Synced Sep 24, 2026, 4:05 PM EDT
Completed Phase 3 Interventional Results available

Efficacy and Safety of Intravenous Acetaminophen Over 48 Hrs for the Treatment of Post-op Pain After Gynecologic Surgery

NCT00399568
View directory record Official record
Conditions
Postoperative Pain, Hysterectomy
Interventions
IV Acetaminophen, IV Placebo 100 mL solution
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 75 Years · Female only
Enrollment
331 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
27
States / cities
Birmingham, Alabama • Sheffield, Alabama • Phoenix, Arizona + 21 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Sep 24, 2026, 4:05 PM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Determining the Effect of an "Alternate Recovery Protocol" Versus Current Standard of Care After Cesarean Section

NCT03330119
View directory record Official record
Conditions
Pregnancy Related, Narcotic Use
Interventions
Alternate Management, Control
Drug
Lead sponsor
Brest, Norman A., M.D.
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
1,494 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Wynnewood, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 1, 2021 · Synced Sep 24, 2026, 4:05 PM EDT
Terminated Phase 1 Interventional Results available

Donor-Alloantigen-Reactive Regulatory T Cell (darTregs) in Liver Transplantation

NCT02188719
View directory record Official record
Conditions
Liver Transplantation
Interventions
Anti-Thymocyte Globulin - Rabbit, darTreg Infusion, Everolimus, Tacrolimus, Mycophenolate mofetil, Prednisone, Acetaminophen, Diphenhydramine, Anti-Infective Prophylaxis, Leukapheresis, Blood draws, Liver biopsies, Liver transplantation
Biological · Drug · Procedure
Lead sponsor
National Institute of Allergy and Infectious Diseases (NIAID)
NIH
Eligibility
21 Years to 70 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
3
States / cities
San Francisco, California • Chicago, Illinois • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 21, 2020 · Synced Sep 24, 2026, 4:05 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Ketorolac as an Adjuvant Agent for Postoperative Pain Control Following Arthroscopic Meniscus Surgery

NCT04246541
View directory record Official record
Conditions
Meniscus Tear, Tibial, Pain, Postoperative, Postoperative Complications, Ketorolac Adverse Reaction, Opioid Use
Interventions
Ketorolac, Oxycodone-Acetaminophen
Drug
Lead sponsor
University Hospitals Cleveland Medical Center
Other
Eligibility
18 Years to 89 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 2, 2022 · Synced Sep 24, 2026, 4:05 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 24, 2026, 4:05 PM EDT
Completed Phase 3 Interventional

CPL-01 in the Management of Postoperative Pain After Bunionectomy

NCT05831449
View directory record Official record
Conditions
Bunion, Post-operative Pain
Interventions
Local anesthetic injection of CPL-01, Naropin, 0.5% Injectable Solution, Placebo, Morphine rescue medication, Acetaminophen rescue medication, Oxycodone rescue medication, Bunionectomy
Drug · Procedure
Lead sponsor
Cali Pharmaceuticals LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
616 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Sep 24, 2026, 4:05 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Analgesic Efficacy & Safety of Intravenous (IV) Acetaminophen Versus Placebo for the Treatment of Postop Pain

NCT00564486
View directory record Official record
Conditions
Pain
Interventions
IV Placebo, IV Acetaminophen
Drug
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 80 Years
Enrollment
244 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
17
States / cities
Sheffield, Alabama • Phoenix, Arizona • Arcadia, California + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 20, 2016 · Synced Sep 24, 2026, 4:05 PM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Postoperative Pain Control & Relief in Neonates

NCT03677830
View directory record Official record
Conditions
Pain, Postoperative, Premature Infant, Opioid Use
Interventions
Acetaminophen, Saline
Drug
Lead sponsor
St. Louis University
Other
Eligibility
Up to 1 Month
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 12, 2024 · Synced Sep 24, 2026, 4:05 PM EDT
Not listed Phase 4 Interventional

Pain Relief After Hiatal Hernia Repair Surgery

NCT04936711
View directory record Official record
Conditions
Shoulder Pain, Hiatal Hernia
Interventions
Resteck Shiatsu Neck and Back Massager, Marcaine
Device · Drug
Lead sponsor
Norton Thoracic Institute
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jun 22, 2021 · Synced Sep 24, 2026, 4:05 PM 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 24, 2017 · Synced Sep 24, 2026, 4:05 PM EDT
Recruiting Not applicable Interventional

The Effect of Pre-Operative Cryoneurolysis on Post-Operative Narcotic Consumption in Patients Undergoing Autograft ACL Reconstruction

NCT06603051
View directory record Official record
Conditions
ACL Repair
Interventions
Cryoneurolysis
Procedure
Lead sponsor
Virtua Health, Inc.
Other
Eligibility
14 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
2
States / cities
Burlington, New Jersey • Cherry Hill, New Jersey
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Sep 24, 2026, 4:05 PM EDT
Completed Phase 4 Interventional Results available

IV Acetaminophen for Acute Post Operative Pain in C-Section Patients

NCT02069184
View directory record Official record
Conditions
Post-operative Pain
Interventions
IV Acetaminophen, Saline as placebo
Drug · Other
Lead sponsor
Montefiore Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 21, 2019 · Synced Sep 24, 2026, 4:05 PM EDT
Withdrawn Phase 4 Interventional

Effect of a Multimodal Pain Regimen on Pain Control, Patient Satisfaction and Narcotic Use in Orthopaedic Trauma Patients

NCT02160301
View directory record Official record
Conditions
Post Operative Pain Control
Interventions
Gabapentin, Acetaminophen, Celecoxib, Dexamethasone, Oxycodone
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated May 18, 2017 · Synced Sep 24, 2026, 4:05 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

IV Acetaminophen for Post-Operative Pain Management in Enhanced Recovery After Surgery (ERAS) Population

NCT03198871
View directory record Official record
Conditions
Abdominal Wall Hernia, Pancreatic Diseases, Bowel Disease, Gastric Disease
Interventions
Acetaminophen Injectable Product, Sodium Chloride 0.9%, Intravenous
Drug
Lead sponsor
Kathirvel Subramaniam
Other
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 27, 2021 · Synced Sep 24, 2026, 4:05 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Addition of Muscle Relaxants in a Multimodal Analgesic Regimen for Analgesia After Primary Total Knee Arthroplasty

NCT04574791
View directory record Official record
Conditions
Pain, Postoperative
Interventions
TiZANidine 2 MG Oral Capsule
Drug
Lead sponsor
Rothman Institute Orthopaedics
Other
Eligibility
18 Years to 80 Years
Enrollment
240 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 4, 2020 · Synced Sep 24, 2026, 4:05 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 24, 2026, 4:05 PM EDT