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Showing 1–24 of 111 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Acetaminophen standard dose Clear all
Enrolling by invitation Not applicable Interventional

Alternatives to Dental Opioid Prescribing After Tooth Extraction

NCT06275191
View directory record Official record
Conditions
Analgesics, Opioid, Acute Pain, Tooth Extraction, Adolescent, Acetaminophen, Ibuprofen
Interventions
Multicomponent intervention, Usual care
Behavioral · Other
Lead sponsor
Douglas Oyler
Other
Eligibility
12 Years to 25 Years
Enrollment
38,159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Sep 3, 2026, 1:12 AM EDT
Withdrawn Not applicable Interventional

Here's the Buzz: Evaluating Pediatric Post Op Pain and Nausea Following Tonsillectomy Surgery

NCT04910919
View directory record Official record
Conditions
Tonsillectomy
Interventions
Honey, Standard of Care
Dietary Supplement · Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
5 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 6, 2022 · Synced Sep 3, 2026, 1:12 AM EDT
Withdrawn Phase 2 Interventional

Maxi-Analgesic Phase 2 Study to Compare the Analgesic Effects in Different Dosing Groups to Treat Teeth Extraction Pain

NCT01104844
View directory record Official record
Conditions
Dental Pain
Interventions
Full Dose Strength, Quarter dose strength, Half dose strength, Acetaminophen standard dose, Ibuprofen low dose, Ibuprofen high dose, Placebo
Drug
Lead sponsor
AFT Pharmaceuticals, Ltd.
Industry
Eligibility
16 Years to 40 Years
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 11, 2013 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 2 Interventional Results available

Celecoxib After Tonsillectomy

NCT02934191
View directory record Official record
Conditions
Tonsillectomy
Interventions
Celecoxib, Placebo, Acetaminophen, Oxycodone
Drug · Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
3 Years to 11 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 9, 2020 · Synced Sep 3, 2026, 1:12 AM EDT
Active, not recruiting Not applicable Interventional

Use of Transcutaneous Electrical Nerve Stimulation for Reducing Biologic Injection Site Pain(TENS Study)

NCT04058652
View directory record Official record
Conditions
Psoriasis
Interventions
transcutaneous electrical nerve stimulation (TENS) unit
Device
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 64 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2027
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 3, 2026 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 4 Interventional Results available

Study of KRYSTEXXA® (Pegloticase) Plus Methotrexate in Participants With Uncontrolled Gout

NCT03994731
View directory record Official record
Conditions
Gout
Interventions
Pegloticase, methotrexate, placebo, folic acid, gout flare prophylaxis regimen, fexofenadine, acetaminophen, methylprednisolone
Biological · Drug · Dietary Supplement
Lead sponsor
Amgen
Industry
Eligibility
18 Years and older
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
60
States / cities
Birmingham, Alabama • Anchorage, Alaska • Flagstaff, Arizona + 54 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Safety of Intravenous Acetaminophen Vs Placebo for the Treatment of Endotoxin-Induced Fever in Healthy Adult Males

NCT00493311
View directory record Official record
Conditions
Fever
Interventions
IV Placebo, IV Acetaminophen, Reference Standard Endotoxin (RSE)
Drug · Biological
Lead sponsor
Mallinckrodt
Industry
Eligibility
18 Years to 75 Years · Male only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Oct 18, 2016 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 4 Interventional Results available

Muscle Relaxation for Pediatric Adenotonsillectomy

NCT06225466
View directory record Official record
Conditions
Tonsillectomy
Interventions
Rocuronium, Sugammadex, Anesthesia without neuromuscular blockade
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
2 Years to 12 Years
Enrollment
172 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jul 27, 2025 · Synced Sep 3, 2026, 1:12 AM EDT
Recruiting Phase 4 Interventional Accepts healthy volunteers

Optimizing Pain Control in Transurethral Resection of the Prostate

NCT04102566
View directory record Official record
Conditions
Pain, BPH With Urinary Obstruction, BPH With Urinary Obstruction With Other Lower Urinary Tract Symptoms
Interventions
Ibuprofen 600 mg, Education
Drug · Behavioral
Lead sponsor
Benaroya Research Institute
Other
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 26, 2019 · Synced Sep 3, 2026, 1:12 AM EDT
Recruiting Phase 3 Interventional

High-dose Prophylactic Gabapentin (HOPE) vs. Placebo to Prevent Opioid Use for Oral Mucositis Pain During Concurrent Chemoradiation for Head and Neck Cancer

NCT06992427
View directory record Official record
Conditions
Head and Neck Squamous Cell Carcinoma, Stage I Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage II Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage III Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8, Stage IV Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8
Interventions
Gabapentin, Placebo, Chemotheraphy, Radiation Therapy, Analgesic Agent, Biospecimen Collection, Survey Administration
Drug · Radiation · Procedure + 1 more
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
228 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
200
States / cities
Gilbert, Arizona • Peoria, Arizona • Phoenix, Arizona + 162 more
Source: ClinicalTrials.gov public record
Updated May 10, 2026 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 1 Interventional Results available

Durvalumab and Vicineum in Subjects With High-Grade Non-Muscle-Invasive Bladder Cancer Previously Treated With Bacillus Calmette-Guerin (BCG)

NCT03258593
View directory record Official record
Conditions
Urinary Bladder Neoplasms
Interventions
Durvalumab, Vicineum, Acetaminophen, Antihistamine, Bladder Biopsy, TURBT, Cystoscopy, Urine cytology, Electrocardiogram, CT, MRI
Drug · Procedure · Diagnostic Test
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Sep 3, 2026, 1:12 AM EDT
Completed No phase listed Observational

Impact of Opioid Avoidance Protocol for ACL Reconstruction

NCT06340932
View directory record Official record
Conditions
ACL Tear, Post Operative Pain
Interventions
Iovera, Celecoxib, Acetaminophen, Oxycodone, Tramadol, Bupivacaine Hydrochloride, Acetaminophen 500Mg Cap
Device · Drug
Lead sponsor
Matthew Varacallo
Other
Eligibility
15 Years and older
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
DuBois, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 6, 2025 · Synced Sep 3, 2026, 1:12 AM EDT
Recruiting Not applicable Interventional

Prescription Antipyretics to Decrease Unscheduled Return Visits In A Pediatric Emergency Department

NCT07074912
View directory record Official record
Conditions
Fever
Interventions
Prescription for weight-based dosing of antipyretic, Standard discharge instructions
Other
Lead sponsor
University of Texas at Austin
Other
Eligibility
6 Months to 36 Months
Enrollment
440 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Jul 19, 2025 · Synced Sep 3, 2026, 1:12 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Reduced Opioid Prescription After Laparoscopic Hysterectomy

NCT05548582
View directory record Official record
Conditions
Pain, Postoperative, Opioid Misuse, Opioid Use, Pain
Interventions
OxyCODONE 5 mg Oral Tablet, Acetaminophen 500 mg Tab, Ibuprofen 600 mg
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jan 11, 2026 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Perioperative Ketamine for Pain With Gastric Bypass

NCT03448068
View directory record Official record
Conditions
Laparoscopic Gastric Bypass Surgery, Ketamine
Interventions
Ketamine, Standard therapy
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 69 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 28, 2021 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 4 Interventional Results available

Pharmacokinetic Study of Hydrocodone/APAP in Chronic Pain Patients

NCT01517295
View directory record Official record
Conditions
Chronic Pain
Interventions
Hydrocodone
Drug
Lead sponsor
NEMA Research, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
2
States / cities
Naples, Florida • Leawood, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 27, 2016 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 3 Interventional Results available

Evaluation of Anterior Quadratus Lumborum Block for Postoperative Analgesia in Hip Arthroscopy

NCT03432650
View directory record Official record
Conditions
Hip Disease
Interventions
Bupivacaine + dexamethasone, Ultrasound
Drug · Device
Lead sponsor
Hospital for Special Surgery, New York
Other
Eligibility
18 Years to 80 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Sep 3, 2026, 1:12 AM EDT
Not listed Phase 2 Interventional

Intravenous Acetaminophen for Craniotomy Patients

NCT01474304
View directory record Official record
Conditions
Craniotomy
Interventions
Acetaminophen
Drug
Lead sponsor
Swedish Medical Center
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 28, 2016 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Phase 4 Interventional Results available

Study of Pegloticase (KRYSTEXXA®) Plus Methotrexate in Patients With Uncontrolled Gout

NCT03635957
View directory record Official record
Conditions
Gout
Interventions
Pegloticase, Methotrexate (MTX), Standard Gout Flare Prophylaxis, Infusion Reaction (IR) Prophylaxis, Folic Acid
Biological · Drug · Dietary Supplement
Lead sponsor
Amgen
Industry
Eligibility
18 Years to 65 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
6
States / cities
Anchorage, Alaska • Glendale, Arizona • Mesa, Arizona + 3 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Sep 3, 2026, 1:12 AM EDT
Completed Not applicable Interventional Results available

Patient-Driven Analgesic Protocol Selection for Post-Cesarean Pain Management

NCT02605187
View directory record Official record
Conditions
Postoperative Pain
Interventions
No choice given, Choice given, Ibuprofen, Acetaminophen, Gabapentin, Morphine (low), Morphine (med), Morphine (high)
Other · Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
160 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Oct 15, 2018 · Synced Sep 3, 2026, 1:12 AM 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 3, 2026, 1:12 AM EDT
Not yet recruiting Phase 4 Interventional

Suzetrigine for Opioid-Sparing Postoperative Analgesia Following Transvaginal Pelvic Reconstructive Surgery

NCT07600697
View directory record Official record
Conditions
Pelvic Organ Prolapse (POP), Stress Urinary Incontinence (SUI), Postoperative Pain
Interventions
Suzetrigine, Opioid Analgesics (Tramadol or Oxycodone), Scheduled Acetaminophen and Ibuprofen
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Sep 3, 2026, 1:12 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional

Malignant Pleural Disease Treated With Autologous T Cells Genetically Engineered to Target the Cancer-Cell Surface Antigen Mesothelin

NCT02414269
View directory record Official record
Conditions
Malignant Pleural Disease, Mesothelioma, Metastases, Lung Cancer, Breast Cancer
Interventions
iCasp9M28z T cell infusions, cyclophosphamide, pembrolizumab
Genetic · Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2027
U.S. locations
6
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 3, 2026, 1:12 AM EDT
Recruiting Phase 3 Interventional

Optimizing Pain Treatment in Children On Mechanical Ventilation

NCT06994442
View directory record Official record
Conditions
Mechanical Ventilation, Pediatric Acute Respiratory Failure, Analgesics, Opioid, Sedation and Analgesia
Interventions
Acetaminophen, Ketorolac, Placebo
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
2 Months to 17 Years
Enrollment
644 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
16
States / cities
Little Rock, Arkansas • Washington D.C., District of Columbia • Ann Arbor, Michigan + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2026 · Synced Sep 3, 2026, 1:12 AM EDT