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Showing 1–18 of 18 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: acetaminophen Caplet Clear all
Completed Phase 3 Interventional Accepts healthy volunteers

Evaluate Onset of Action of a Fast Release Aspirin

NCT01420094
View directory record Official record
Conditions
Healthy Subjects
Interventions
Acetylsalicyclic acid (Fast release Aspirin, BAY1019036), Acetaminophen (Tylenol extra strength), Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
16 Years to 45 Years
Enrollment
510 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 3 Interventional Results available

To Evaluate the Safety and Efficacy of Acetaminophen 650 mg and 1000mg in Dental Pain After Surgery

NCT01115673
View directory record Official record
Conditions
Pain
Interventions
Acetaminophen, Placebo Control
Drug
Lead sponsor
McNeil Consumer Healthcare Division of McNEIL-PPC, Inc.
Industry
Eligibility
16 Years to 50 Years
Enrollment
540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 27, 2012 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of Ibuprofen 250 mg / Acetaminophen 500 mg Comparing The Antipyretic Effects in Healthy Male Volunteers

NCT02761980
View directory record Official record
Conditions
Fever
Interventions
Ibuprofen 250 mg / Acetaminophen 500 mg, Ibuprofen 250 mg, Acetaminophen 500 mg, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
290 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 6, 2018 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Bioequivalence Study of Advil Dual Action Liquid Filled Capsules (125 mg/250 mg) Versus Advil Dual Action Caplets (125 mg/250 mg) and Bioavailability Assessment of Advil Dual Action Liquid Filled Capsules (125 mg/250 mg) and Advil Liqui-Gels (200 mg) in Healthy Adult Subjects

NCT06802185
View directory record Official record
Conditions
Pain
Interventions
ADA Liquid Filled Capsules (Test Product), ADA Caplets (Reference Product), Advil Liqui-gels (Reference Product)
Drug
Lead sponsor
HALEON
Industry
Eligibility
18 Years to 55 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 22, 2025 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 4 Interventional Results available

A Study to Assess Menstrual Cramp Pain Associated With Primary Dysmenorrhea

NCT03448536
View directory record Official record
Conditions
Dysmenorrhea
Interventions
Naproxen Sodium, (Aleve, BAY117031), Acetaminophen (Tylenol Extra Strength)
Drug
Lead sponsor
Bayer
Industry
Eligibility
15 Years to 35 Years · Female only
Enrollment
201 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
8
States / cities
Chandler, Arizona • Scottsdale, Arizona • Pinellas Park, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Oct 27, 2019 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 4 Interventional Results available

PO vs. IV Acetaminophen Given Perioperatively for 24 hr Post-op Pain Control Following Total Hip or Knee Replacement

NCT02244619
View directory record Official record
Conditions
Post-op Pain
Interventions
Oral acetaminophen, IV acetaminophen
Drug
Lead sponsor
Kettering Health Network
Other
Eligibility
18 Years and older
Enrollment
515 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Kettering, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 23, 2017 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 3 Interventional

Study of Acetaminophen (ACM) in Post-operative Dental Pain

NCT02735122
View directory record Official record
Conditions
Post Operative Dental Pain
Interventions
acetaminophen Tablet, acetaminophen Caplet, ibuprofen Liquid-filled capsule, Placebo Tablet, Placebo Caplet, Placebo Liquid-filled capsule
Drug
Lead sponsor
Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division
Industry
Eligibility
17 Years to 50 Years
Enrollment
420 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 27, 2022 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Aminotransferase Trends During Prolonged Acetaminophen Dosing

NCT00743093
View directory record Official record
Conditions
Drug Toxicity, Healthy
Interventions
acetaminophen, placebo
Drug
Lead sponsor
Denver Health and Hospital Authority
Other
Eligibility
18 Years and older
Enrollment
398 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
2
States / cities
Aurora, Colorado • Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 17, 2013 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 2 Interventional Results available

Postoperative Pain Management in Rhinoplasty

NCT03584152
View directory record Official record
Conditions
Pain, Postoperative
Interventions
Norco 5Mg-325Mg Tablet, Tylenol 325Mg Caplet, Ibuprofen 200 mg
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Dec 2, 2025 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 3 Interventional Results available

A Safety And Efficacy Study of Ibuprofen 250 mg / Acetaminophen 500 mg In The Treatment Of Post-Surgical Dental Pain

NCT02912650
View directory record Official record
Conditions
Post-surgical Pain Following Extraction of Molar Teeth
Interventions
Ibuprofen 250 mg / Acetaminophen 500 mg, Ibuprofen 250 mg, Acetaminophen 650 mg, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 40 Years
Enrollment
568 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Aug 29, 2017 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 3 Interventional Results available

Randomized, Double-Blind, Single-Dose, Efficacy and Safety Study of Test Acetaminophen Tablet in Postoperative Dental Pain

NCT03224403
View directory record Official record
Conditions
Post-operative Dental Pain
Interventions
Test acetaminophen, Commercial acetaminophen, Commercial ibuprofen, Placebo
Drug
Lead sponsor
Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division
Industry
Eligibility
17 Years to 50 Years
Enrollment
664 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 14, 2021 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 3 Interventional

Evaluate the Time of Pain Relief of Fast Acting Aspirin Versus Acetaminophen in Subjects Diagnosed With Sore Throat Pain

NCT01453400
View directory record Official record
Conditions
Pharyngitis
Interventions
Acetylsalicylic Acid (Aspirin, BAY1019036) + placebo, Acetaminophen + placebo, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older
Enrollment
177 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Dec 6, 2018 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 2 Interventional Results available

Evaluation of the Efficacy of Novel Ibuprofen Acetaminophen Combination Formulations in the Treatment of Post-surgical Dental Pain

NCT01559259
View directory record Official record
Conditions
Pain
Interventions
Ibuprofen/acetaminophen, Ibuprofen, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
16 Years to 40 Years
Enrollment
394 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 18, 2020 · Synced Sep 6, 2026, 2:22 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers

Efficacy of a Single Dose of Aspirin vs. Acetaminophen in Tension Type Headache

NCT01552798
View directory record Official record
Conditions
Headache
Interventions
Acetylsalicylic acid (Aspirin, BAY1019036), Acetaminophen, Placebo
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 65 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Kalamazoo, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 18, 2018 · Synced Sep 6, 2026, 2:22 AM EDT
Completed Phase 2 Interventional

Study of Acetaminophen (ACE) in Post-operative Dental Pain

NCT02320708
View directory record Official record
Conditions
Dental Pain
Interventions
Acetaminophen (ACE) (1000 mg), Commercial ACE (1000 mg), Commercial Ibuprofen (IBU) (400 mg), Placebo
Drug
Lead sponsor
Johnson & Johnson Healthcare Products Division of McNEIL-PPC, Inc.
Industry
Eligibility
17 Years to 50 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Dec 2, 2021 · Synced Sep 6, 2026, 2:22 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Clinical Study to Evaluate Efficacy of New Paracetamol Formulation Compared to Ibuprofen in Headache

NCT01842633
View directory record Official record
Conditions
Pain
Interventions
Paracetamol and Caffeine, Ibuprofen, Placebo
Drug · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
365 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Waltham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 31, 2017 · Synced Sep 6, 2026, 2:22 AM 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 6, 2026, 2:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

To Investigate the Gastrointestinal Behaviour of Two Triple Combination Products in Healthy Male Volunteers

NCT03415243
View directory record Official record
Conditions
Common Cold
Interventions
Acetaminophen 650mg+Dextromethorphan 20mg+Phenylephrine 10mg, Acetaminophen 325mg+Dextromethorphan 10mg+Phenylephrine 5mg
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
21 Years to 45 Years · Male only
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018
U.S. locations
1
States / cities
Lexington, Kentucky
Source: ClinicalTrials.gov public record
Updated Jun 23, 2019 · Synced Sep 6, 2026, 2:22 AM EDT