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ClinicalTrials.gov public records Last synced Oct 13, 2026, 10:10 PM EDT

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Showing 337–360 of 948 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Acetaminophen (Ofirmev) Clear all
Completed Not applicable Interventional

Randomized Study Comparing the Use of Epidural Analgesia to Intravenous Narcotics for Laparoscopic Colorectal Resection.

NCT02086123
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Epidural Analgesia, Parenteral Analgesia (Intravenous)
Procedure
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Enrollment
87 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Aug 14, 2023 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Combination Immunosuppressive Therapy to Prevent Kidney Transplant Rejection in Adults

NCT00078559
View directory record Official record
Conditions
Kidney Transplantation, Kidney Disease
Interventions
Alemtuzumab, Sirolimus, Tacrolimus, Kidney transplant, Methylprednisolone (or equivalent), Acetaminophen, Diphenhydramine, Trimethoprim (TMP)/Sulfa (Bactrim, Septra), Valgancyclovir, Acyclovir, Pentamidine, Clotrimazole, Nystatin
Drug · Procedure
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2010
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jun 29, 2018 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Randomized Controlled Trial of Oral Acetaminophen for Analgesic Control After Transvaginal Oocyte Retrieval

NCT02418182
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen, placebo
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
99 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Feb 18, 2020 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 2 Interventional

Pain Management and Behavioral Outcomes in Patients With Dementia

NCT00012857
View directory record Official record
Conditions
Dementia, Alzheimer Disease, Pain, Behavior, Agitation
Interventions
acetaminophen 650 mg qid and placebo qid PRN. The other arm was placebo qid and acetaminophen 650 mg qid PRN
Drug
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
55 Years and older
Enrollment
66 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Ends 2001
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Apr 7, 2015 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 3 Interventional Results available

A 12-Week Efficacy Study of Paracetamol 1000mg Sustained-release Tablets in Patients With Osteoarthritis

NCT02311881
View directory record Official record
Conditions
Pain
Interventions
Paracetamol 1000 mg SR tablets, Paracetamol 665 mg SR tablets, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
40 Years to 80 Years
Enrollment
960 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
56
States / cities
Birmingham, Alabama • Huntsville, Alabama • Chandler, Arizona + 46 more
Source: ClinicalTrials.gov public record
Updated Apr 7, 2017 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 4 Interventional Results available

Opioid-Free Shoulder Arthroplasty

NCT03540030
View directory record Official record
Conditions
Opioid Use, Shoulder Osteoarthritis, Avascular Necrosis, Rotator Cuff Tear, Arthritis;Inflammatory
Interventions
Gabapentin, Celecoxib, toradol, acetaminophen, regional block, propofol, IV lidocaine, rocuronium, vecuronium, sevoflurane, desflurane
Drug
Lead sponsor
OrthoCarolina Research Institute, Inc.
Other
Eligibility
50 Years and older
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 14, 2020 · Synced Oct 13, 2026, 10:10 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 4, 2022 · Synced Oct 13, 2026, 10:10 PM EDT
Active, not recruiting Phase 3 Interventional Results available

A Study to Evaluate the Efficacy and Safety of Obinutuzumab in Participants With ISN/RPS 2003 Class III or IV Lupus Nephritis

NCT04221477
View directory record Official record
Conditions
Lupus Nephritis
Interventions
Obinutuzumab, MMF, Prednisone, Placebo, Methylprednisolone, Acetaminophen, Diphenhydramine
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years to 75 Years
Enrollment
271 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2031
U.S. locations
18
States / cities
Birmingham, Alabama • Beverly Hills, California • Fontana, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Oct 13, 2026, 10:10 PM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Scheduled or As Needed Pain Regimen?

NCT06495632
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Motrin and narcotic
Drug
Lead sponsor
Cape Fear Valley Health System
Other
Eligibility
18 Years to 65 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Fayetteville, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 13, 2025 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 3 Interventional

Long Term Safety and Tolerability Study in Approximately 350 Subjects With Moderate to Severe Chronic, Non-malignant Pain

NCT00195728
View directory record Official record
Conditions
Moderate to Severe Chronic, Non-malignant Pain
Interventions
Hydrocodone/Acetaminophen on Extended Release
Drug
Lead sponsor
Abbott
Industry
Eligibility
21 Years to 75 Years
Enrollment
431 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
76
States / cities
Huntsville, Alabama • Chandler, Arizona • Mesa, Arizona + 60 more
Source: ClinicalTrials.gov public record
Updated Jan 19, 2011 · Synced Oct 13, 2026, 10:10 PM EDT
Terminated No phase listed Observational

Cooled Versus Conventional Genicular Radiofrequency Ablation for Chronic Knee Pain

NCT04275128
View directory record Official record
Conditions
Chronic Knee Pain
Interventions
Cooled radiofrequency ablation, Conventional radiofrequency ablation
Device
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Sep 28, 2020 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 4 Interventional Results available

Acetaminophen (Tylenol) for Mood and Memory Changes Associated With Corticosteroid Therapy

NCT00377364
View directory record Official record
Conditions
Asthma, Rheumatic Disease
Interventions
Drug: Acetaminophen, Drug: Placebo
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated May 5, 2016 · Synced Oct 13, 2026, 10:10 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Pain and Acetaminophen in Women Study

NCT04573426
View directory record Official record
Conditions
Overweight, Obesity, Healthy Adults
Interventions
Acetaminophen, Placebo, Weight stigma vignette, Control vignette
Drug · Behavioral
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older · Female only
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 8, 2021 · Synced Oct 13, 2026, 10:10 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 22, 2026 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 2 Interventional

Pilot Study of the Efficacy and Safety of Q8003 in Patients Who Have Undergone Total Knee Arthroplasty or Total Hip Arthroplasty

NCT00818493
View directory record Official record
Conditions
Postoperative Pain
Interventions
Q8003 (morphine sulfate and oxycodone hydrochloride), Low dose Q8003 (morphine sulfate and oxycodone hydrochloride), Percocet (oxycodone and acetaminophen)
Drug
Lead sponsor
QRxPharma Inc.
Industry
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
4
States / cities
Birmingham, Alabama • Phoenix, Arizona • Royal Oak, Michigan + 1 more
Source: ClinicalTrials.gov public record
Updated May 17, 2012 · Synced Oct 13, 2026, 10:10 PM EDT
Terminated Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Non-opioids for Analgesia After Adenotonsillectomy in Children

NCT03618823
View directory record Official record
Conditions
Adenotonsillectomy, Post-operative Analgesia, Opioid Use
Interventions
Oxycodone, Ibuprofen, Acetaminophen
Drug
Lead sponsor
David Chi, MD
Other
Eligibility
3 Years to 17 Years
Enrollment
268 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 10, 2021 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 4 Interventional Results available

Nonopioid Pain Control Regimen After Arthroscopic Hip Procedures

NCT05076110
View directory record Official record
Conditions
Hip Arthroscopy
Interventions
Oxycodone, Ibuprofen, Gabapentin, Acetaminophen, Methocarbamol
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
16 Years and older
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 1 Interventional

An Open-label, Phase 1 Study to Determine the Maximum Tolerated Dose of HLX07,in Patients With Advanced Solid Cancers

NCT02648490
View directory record Official record
Conditions
Solid Tumour
Interventions
HLX07, Acetaminophen, dexamethasone, diphenhydramine, 5-HT3 inhibitor
Drug
Lead sponsor
Henlix, Inc
Industry
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Fremont, California
Source: ClinicalTrials.gov public record
Updated Jul 30, 2019 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 2 Interventional Results available

Phase 2 Herniorrhaphy Study for Opioid Elimination

NCT03695367
View directory record Official record
Conditions
Postoperative Pain
Interventions
HTX-011, Luer lock applicator, Vial access device, Ibuprofen, Acetaminophen, Ketorolac
Drug · Device
Lead sponsor
Heron Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
5
States / cities
Anaheim, California • Pasadena, California • Draper, Utah + 2 more
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Nonopioid Analgesia After Arthroscopic Meniscus Surgery

NCT03820193
View directory record Official record
Conditions
Meniscus Disorder, Narcotic Use
Interventions
Celecoxib, Hydrocodon/Acetaminophen, Ketorolac, Gabapentin, Acetaminophen, Diazepam
Drug
Lead sponsor
Henry Ford Health System
Other
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 5, 2023 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Not applicable Interventional

Prescribing Vs. Recommending Over-The-Counter (PROTECT) Analgesics for Patients with Postoperative Pain:

NCT05370404
View directory record Official record
Conditions
Acute Pain, Surgery
Interventions
Prescription by surgical team, Recommendation by surgical team
Other
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 11, 2024 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 2Phase 3 Interventional Results available

A Study to Evaluate the Safety of Rituximab Retreatment in Subjects With Systemic Lupus Erythematosus

NCT00137969
View directory record Official record
Conditions
Lupus Erythematosus, Systemic
Interventions
Rituximab, Placebo, Prednisone, Acetaminophen, Diphenhydramine
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
16 Years to 75 Years
Enrollment
262 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2008
U.S. locations
63
States / cities
Birmingham, Alabama • Huntsville, Alabama • Paradise Valley, Arizona + 51 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2019 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 3 Interventional Results available

Maxigesic® IV Phase 3 Exposure Study

NCT04005755
View directory record Official record
Conditions
Postoperative Pain
Interventions
Maxigesic® IV
Drug
Lead sponsor
AFT Pharmaceuticals, Ltd.
Industry
Eligibility
18 Years and older
Enrollment
232 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
2
States / cities
Pasadena, Maryland • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 1, 2021 · Synced Oct 13, 2026, 10:10 PM EDT
Completed Phase 4 Interventional Results available

A Randomized Study of Three Medication Regimens for Acute Low Back Pain

NCT01587274
View directory record Official record
Conditions
Acute Low Back Pain
Interventions
Naproxen, Cyclobenzaprine, Oxycodone/ acetaminophen
Drug
Lead sponsor
Montefiore Medical Center
Other
Eligibility
21 Years to 64 Years
Enrollment
323 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Oct 13, 2026, 10:10 PM EDT