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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Paracetamol/acetaminophen Clear all
Recruiting Phase 4 Interventional

Meloxicam in Mohs Micrographic Surgery

NCT07200544
View directory record Official record
Conditions
Postoperative Pain, Acute, Skin Cancer
Interventions
Meloxicam 7.5 mg, Meloxicam 15 mg, Acetaminophen 500mg
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 110 Years
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Dec 14, 2025 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 4 Interventional Results available

Postoperative Pain Control in Septum and Sinus Surgery

NCT04149964
View directory record Official record
Conditions
Post-operative Pain, Sinus Surgery
Interventions
Acetaminophen 325 mg Oral Tablet, Acetaminophen 650 mg Oral Tablet, OxyCODONE 5 mg Oral Tablet, Acetaminophen/Hydrocodone 325 mg/7.5 mg oral tablet
Drug
Lead sponsor
Corewell Health East
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Farmington Hills, Michigan
Source: ClinicalTrials.gov public record
Updated Aug 30, 2023 · Synced Sep 28, 2026, 11:47 PM EDT
Recruiting Phase 2 Interventional

NSAID Use After Robotic Partial Nephrectomy

NCT05842044
View directory record Official record
Conditions
Kidney Cancer, Renal Cancer, Renal Neoplasm
Interventions
Ketorolac, Acetaminophen, Oxycodone, Hydromorphone, Ibuprofen
Drug
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 99 Years
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Not applicable Interventional

Outcomes Associated With Application of a Normothermia Protocol in Patients With Severe Neurological Insult and Fever

NCT00890604
View directory record Official record
Conditions
Subarachnoid Hemorrhage, Severe Traumatic Brain Injury
Interventions
Stepwise normothermia protocol, Ibuprofen, Acetominophen
Other · Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 85 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 29, 2024 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 2 Interventional Results available

Acetaminophen/Naproxen Sodium Dose Ranging Study

NCT04447040
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen/naproxen sodium Dose A, Acetaminophen/naproxen sodium Dose B, Acetaminophen/naproxen sodium Dose C, Acetaminophen/naproxen sodium Dose D, Acetaminophen/naproxen sodium Dose E, Placebo
Drug
Lead sponsor
Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division
Industry
Eligibility
17 Years to 50 Years
Enrollment
304 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Mar 23, 2025 · Synced Sep 28, 2026, 11:47 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 28, 2026, 11:47 PM EDT
Recruiting Phase 4 Interventional

NSAID Use for Treating Dysmenorrhea and Preventing Chronic Pelvic Pain (NSAID HEAL)

NCT06861920
View directory record Official record
Conditions
Dysmenorrhea, Chronic Pelvic Pain, Pelvic Pain
Interventions
Naproxen Sodium 550mg, Placebo, Extended Release Acetaminophen (650 mg)
Drug
Lead sponsor
Endeavor Health
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Evanston, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Sep 28, 2026, 11:47 PM EDT
Terminated Phase 3 Interventional Results available

Long-Term Extension Study of Ofatumumab in Subjects With Pemphigus Vulgaris

NCT02613910
View directory record Official record
Conditions
Pemphigus
Interventions
Ofatumumab, Acetaminophen/paracetamol, Antihistamine (cetirizine or equivalent), Prednisone/Prednisolone
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
Not listed
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
2
States / cities
Los Angeles, California • Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 13, 2017 · Synced Sep 28, 2026, 11:47 PM EDT
Terminated Phase 3 Interventional

Standardizing Management of Patients With Low Back Pain in Primary Care and Physical Therapy

NCT00769626
View directory record Official record
Conditions
Back Pain, Low Back Pain
Interventions
Usual Care, Early Treatment
Other
Lead sponsor
Intermountain Health Care, Inc.
Other
Eligibility
18 Years to 60 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
3
States / cities
South Jordan, Utah • Taylorsville, Utah • West Jordan, Utah
Source: ClinicalTrials.gov public record
Updated Jul 17, 2011 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 4 Interventional Results available

IV vs. Oral Acetaminophen as a Component of Multimodal Analgesia After Total Hip Arthroplasty

NCT03020966
View directory record Official record
Conditions
Pain, Postoperative, Opioid Use
Interventions
Acetaminophen
Drug
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years to 90 Years
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 9, 2021 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Not applicable Interventional Results available

Effect of Ibuprofen on Postoperative Opiate Medication Use and Shoulder Functional Outcomes

NCT02588027
View directory record Official record
Conditions
Rotator Cuff Tear Arthropathy
Interventions
Ibuprofen, Placebo
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
110 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Dec 5, 2024 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 3 Interventional

Opioid-free Anesthesia for Open Cardiac Surgery: A Prospective Randomized Controlled Trial

NCT04197570
View directory record Official record
Conditions
Opioid Use, Heart; Surgery, Heart, Functional Disturbance as Result, Anesthesia
Interventions
Opioid Anesthetics, Non Opioid Analgesics
Drug
Lead sponsor
Benaroya Research Institute
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 27, 2020 · Synced Sep 28, 2026, 11:47 PM EDT
Withdrawn Phase 4 Interventional

Suboxone User Perioperative Early Referral and Enhanced Recovery After Surgery- Orthopaedic Trauma Surgery Population

NCT04464512
View directory record Official record
Conditions
Addiction Opiate, Chronic Pain, Fractures, Bone, Buprenorphine Dependence
Interventions
Sufentanil
Drug
Lead sponsor
West Virginia University
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Dec 11, 2022 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Cannabinoid vs Opioid for Photorefractive Keratectomy Pain Control

NCT05477875
View directory record Official record
Conditions
Photorefractive Keratectomy, Myopia, Hyperopia
Interventions
oral cannabinoid, oral codeine/acetaminophen
Drug · Combination Product
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 6, 2025 · Synced Sep 28, 2026, 11:47 PM EDT
Terminated Not applicable Interventional Results available

IV Acetaminophen vs IV Morphine for Pain Control in Pregnant Women

NCT02267772
View directory record Official record
Conditions
Pain Management in Pregnant Women
Interventions
IV Acetaminophen, IV Morphine
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 60 Years · Female only
Enrollment
163 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
2
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 21, 2021 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Opiates and Benzodiazepines on Driving

NCT03447353
View directory record Official record
Conditions
Driving Behavior
Interventions
Xanax 1Mg Tablet, Norco 10Mg-325Mg Tablet, Placebo Oral Tablet
Drug
Lead sponsor
Timothy L. Brown
Other
Eligibility
18 Years to 40 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Sep 26, 2018 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 3 Interventional Results available

Maxigesic 325 Acute Dental Pain Study

NCT01420653
View directory record Official record
Conditions
Dental Pain
Interventions
Maxigesic 325, Acetaminophen, Ibuprofen, Placebo
Drug
Lead sponsor
AFT Pharmaceuticals, Ltd.
Industry
Eligibility
18 Years to 60 Years
Enrollment
408 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Dec 5, 2018 · Synced Sep 28, 2026, 11:47 PM EDT
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Multimodal Pain Therapy After Hernia Repair

NCT03792295
View directory record Official record
Conditions
Hernia, Abdominal, Pain
Interventions
acetominophen, ibuprofen, oxycodone, Oxycodone
Drug
Lead sponsor
Khashayar Vaziri
Other
Eligibility
18 Years to 90 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 3, 2021 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 2 Interventional Results available

Postoperative Ibuprofen and the Risk of Bleeding After Tonsillectomy With or Without Adenoidectomy

NCT01605903
View directory record Official record
Conditions
Tonsillectomy, Adenoidectomy
Interventions
Ibuprofen, Acetaminophen
Drug
Lead sponsor
Massachusetts Eye and Ear Infirmary
Other
Eligibility
2 Years to 18 Years
Enrollment
741 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
5
States / cities
San Diego, California • Boston, Massachusetts • San Antonio, Texas + 2 more
Source: ClinicalTrials.gov public record
Updated Apr 23, 2018 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 3 Interventional

Toward Better Outcomes in Osteoarthritis

NCT00000425
View directory record Official record
Conditions
Osteoarthritis
Interventions
Nonsteroidal anti-inflammatory drugs (NSAIDs), Acetaminophen
Drug
Lead sponsor
Stanford University
Other
Eligibility
50 Years to 85 Years
Enrollment
900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2001
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 2, 2013 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 4 Interventional Results available

Post-operative Dental Pain Study Comparing Two Different Dosage of Analgesic Efficacy

NCT01075243
View directory record Official record
Conditions
Post-surgical Dental Pain
Interventions
Paracetamol 1000 mg, Paracetamol 650 mg, Placebo
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 45 Years
Enrollment
401 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 28, 2015 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 4 Interventional Results available

The Effect of Intravenous Acetaminophen on Post-Operative Pain After Craniotomy

NCT03445390
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen, Placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Feb 28, 2019 · Synced Sep 28, 2026, 11:47 PM EDT
Completed Phase 4 Interventional

An Open Label, Prospective Study of the Analgesic Efficacy of Oral Xartemis Compared to Generic Oxycodone/APAP( Acetaminophen) in the Treatment of Moderate to Severe Post Operative Pain.

NCT02101476
View directory record Official record
Conditions
Post Operative Pain
Interventions
Percocet, Xartemis
Drug
Lead sponsor
Lotus Clinical Research, LLC
Other
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014
U.S. locations
1
States / cities
Pasadena, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2018 · Synced Sep 28, 2026, 11:47 PM EDT
Terminated Phase 4 Interventional Results available

Post-operative Pain Management in Children With Supracondylar Humerus Fractures

NCT05640674
View directory record Official record
Conditions
Supracondylar Humerus Fracture
Interventions
Ibuprofen, Hydrocodone/acetaminophen, Acetaminophen
Drug
Lead sponsor
Baylor College of Medicine
Other
Eligibility
3 Years to 12 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
3
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 28, 2026, 11:47 PM EDT