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ClinicalTrials.gov public records Last synced Oct 23, 2026, 6:23 AM EDT

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Showing 1–24 of 107 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Postop acetaminophen IV Clear all
Active, not recruiting Phase 4 Interventional Accepts healthy volunteers Results available

Opioid-Free Pain Protocol After Shoulder Arthroplasty

NCT05488847
View directory record Official record
Conditions
Shoulder Arthropathy, Shoulder Pain
Interventions
Celecoxib, Pregabalin, Tramadol, Dexamethasone, Acetaminophen, Ropivicaine, Epinephrine, Ketorolac, Tizanidine, Magnesium, Ibuprofen, Oxycodone Hydrochloride 5 Mg
Drug
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
83 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Oct 23, 2026, 6:23 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 23, 2026, 6:23 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 23, 2026, 6:23 AM EDT
Active, not recruiting Phase 2 Interventional

Pembrolizumab (MK-3475) Plus Investigational Agents in Resectable Non-small Cell Lung Cancer (NSCLC) (MK-3475-01E/KEYMAKER-U01)

NCT06788912
View directory record Official record
Conditions
Lung Neoplasm Malignant
Interventions
Pembrolizumab (neoadjuvant), Cisplatin, Gemcitabine, Pemetrexed, Sacituzumab tirumotecan, H1 receptor antagonist, H2 receptor antagonist, Acetaminophen (or equivalent), Dexamethasone (or equivalent), Carboplatin, Pembrolizumab (adjuvant), Paclitaxel, Steroid mouthwash (dexamethasone or equivalent)
Biological · Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2032
U.S. locations
9
States / cities
Daphne, Alabama • Santa Barbara, California • Lone Tree, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 13, 2026 · Synced Oct 23, 2026, 6:23 AM 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 13, 2018 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Phase 4 Interventional Results available

Dexmedetomidine and IV Acetaminophen for the Prevention of Postoperative Delirium Following Cardiac Surgery

NCT02546765
View directory record Official record
Conditions
Delirium
Interventions
IV acetaminophen & IV propofol, IV acetaminophen & IV dexmedetomidine, IV propofol & placebo, IV dexmedetomidine & placebo
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
60 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 9, 2020 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Novel Multimodal Pain Control Protocol for Minimally Invasive Gynecologic Surgery

NCT04710277
View directory record Official record
Conditions
Postoperative Pain, Narcotic Use, Cryotherapy Effect
Interventions
Opioid-sparing multimodal pain management, Usual care
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older · Female only
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 12, 2023 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Phase 4 Interventional Results available

IV Acetaminophen for Postoperative Pain After Pelvic Organ Prolapse Repair

NCT02155738
View directory record Official record
Conditions
Pelvic Organ Prolapse
Interventions
IV Acetaminophen, IV normal saline
Drug
Lead sponsor
Halina M Zyczynski, MD
Other
Eligibility
18 Years and older · Female only
Enrollment
204 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 19, 2018 · Synced Oct 23, 2026, 6:23 AM 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 5, 2020 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Phase 2 Interventional Results available

Open-Label CA-008 (Vocacapsaicin) in Bunionectomy

NCT03885596
View directory record Official record
Conditions
Pain
Interventions
CA-008, Ketorolac, Acetaminophen IV, Fentanyl, Bupivacaine Hydrochloride, Lidocaine HCl, Celecoxib, Acetaminophen Oral, Lidocaine Hydrochloride, Exparel
Drug
Lead sponsor
Concentric Analgesics
Industry
Eligibility
18 Years to 65 Years
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Pasadena, California
Source: ClinicalTrials.gov public record
Updated Oct 27, 2021 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Not applicable Interventional Results available

A Pilot Study Investigating the nCAP Signal Relief Patch in Subjects Undergoing Primary Hip or Knee Replacement Surgery

NCT05252858
View directory record Official record
Conditions
Opioid Use, Pain, Post Operative
Interventions
nCAP Signal Relief Patch, Standard of Care
Device · Other
Lead sponsor
Jacques E. Chelly
Other
Eligibility
18 Years and older
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 18, 2024 · Synced Oct 23, 2026, 6:23 AM 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 23, 2021 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

TAP Block With Plain Bupivacaine Versus Wound Infiltration With Exparel for Postoperative Pain Management

NCT02074709
View directory record Official record
Conditions
Postoperative Pain
Interventions
Plain bupivacaine, Liposomal bupivacaine
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 80 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jun 4, 2018 · Synced Oct 23, 2026, 6:23 AM 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 14, 2022 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Decreasing Narcotics in Advanced Pelvic Surgery

NCT02110719
View directory record Official record
Conditions
Narcotic Use, Pain, Constipation, Nausea
Interventions
Celebrex, Gabapentin, IV acetaminophen, oral acetaminophen, oral ibuprofen, percocet, vicodin, Oxycodone, dilaudid, Dexamethasone, zofran
Drug
Lead sponsor
Hartford Hospital
Other
Eligibility
18 Years to 100 Years · Female only
Enrollment
138 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Hartford, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 17, 2016 · Synced Oct 23, 2026, 6:23 AM EDT
Not listed Phase 4 Interventional

ZYNRELEF® for Postoperative Analgesia After Laparoscopic Sleeve Gastrectomy

NCT05863221
View directory record Official record
Conditions
Post Operative Pain, Acute, Bariatric Surgery Candidate, Postoperative Pain
Interventions
ZYNRELEF 200Mg-6Mg Extended-Release Solution
Drug
Lead sponsor
Dr. Yannis Raftopoulos
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Holyoke, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 18, 2023 · Synced Oct 23, 2026, 6:23 AM EDT
Terminated Phase 4 Interventional Accepts healthy volunteers

Rectal Acetaminophen Use During Oocyte Retrievals to Reduce Post-Operative Opioid Utilization

NCT03732469
View directory record Official record
Conditions
Opioid Use
Interventions
Acetaminophen, Fentanyl, Propofol
Drug
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 56 Years · Female only
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Jun 18, 2021 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Not applicable Interventional Results available

Perioperative Systemic Acetaminophen to Improve Postoperative Quality of Recovery After Ambulatory Breast Surgery

NCT01852955
View directory record Official record
Conditions
Pain
Interventions
IV acetaminophen, Placebo
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 14, 2016 · Synced Oct 23, 2026, 6:23 AM 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 18, 2023 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Not applicable Interventional Results available

The Impact of IV Acetaminophen on Pain After Appendectomy for Perforated Appendicitis

NCT02881996
View directory record Official record
Conditions
Perforated Appendicitis
Interventions
IV tylenol, No IV tylenol, Ketorolac
Drug
Lead sponsor
Children's Mercy Hospital Kansas City
Other
Eligibility
2 Years to 17 Years
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Kansas City, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 12, 2021 · Synced Oct 23, 2026, 6:23 AM EDT
Completed Phase 2 Interventional Results available

Effectiveness of an Opioid Sparing Pain Regimen in Cardiac Surgery

NCT03679013
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Oral Gabapentin and Intravenous Acetaminophen (IV APAP), Opiate based pain regimen.
Drug
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years to 85 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Falls Church, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 8, 2022 · Synced Oct 23, 2026, 6:23 AM 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 22, 2020 · Synced Oct 23, 2026, 6:23 AM 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 21, 2016 · Synced Oct 23, 2026, 6:23 AM EDT
Withdrawn No phase listed Observational

Factors Affecting Perioperative Outcomes

NCT01530191
View directory record Official record
Conditions
Pelvic Organ Prolapse
Interventions
Not listed
Lead sponsor
University of Oklahoma
Other
Eligibility
21 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Oct 16, 2013 · Synced Oct 23, 2026, 6:23 AM EDT