Last Updated: September 24, 2026

CLINICAL TRIALS PROFILE FOR ACETAMINOPHEN; NAPROXEN SODIUM


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505(b)(2) Clinical Trials for ACETAMINOPHEN; NAPROXEN SODIUM

This table shows clinical trials for potential 505(b)(2) applications. See the next table for all clinical trials
Trial Type Trial ID Title Status Sponsor Phase Start Date Summary
OTC NCT04132336 ↗ Study to Find Out the Optimal Dose of Caffeine in the Combination Tablet of Naproxen Sodium and Caffeine in Patients Experiencing Moderate to Severe Pain After Having Wisdom Teeth Removed Completed Bayer Phase 2 2019-11-12 The researchers in this study wanted to find out the optimal dose of Caffeine in the combination tablet of Naproxen Sodium and Caffeine that works in patients experiencing moderate to severe pain after having wisdom teeth removed. In the US, Naproxen has been marketed since 1976, and Naproxen Sodium has been approved for over-the-counter (OTC) use since 1994 for the temporary relief of minor aches and pains. Caffeine, which is generally consumed as coffee, tea or cocoa, has been shown to enhance the effectiveness of various pain relievers, and therefore is accepted as an additive to painkillers like aspirin and acetaminophen. Patients participating in this study underwent a surgery to remove 3 or 4 wisdom teeth. If the pain severity after the surgery met the study requirement, patients would receive oral tablet(s) of Naproxen Sodium and Caffeine, or Naproxen Sodium, or Caffeine, or placebo (drug with no active ingredient). Patients could also receive additional pain medication when needed. Researchers would also learn if the patients have any medical problems during the study.
OTC NCT04694300 ↗ OTC Naproxen and Acetaminophen Anti-Inflammatory Action in Dental Implant Patients Recruiting Bayer Phase 4 2021-02-07 This double-blind pilot study will evaluate the anti-inflammatory and analgesic effects of an over-the-counter (OTC) regimen of naproxen sodium versus acetaminophen in patients receiving one or two (adjacent) dental implants. It will also confirm that naproxen sodium in the OTC dosage range is a good alternative to immediate-release opioid formulations, which are subject to misuse, abuse and diversion in this patient population.
OTC NCT04694300 ↗ OTC Naproxen and Acetaminophen Anti-Inflammatory Action in Dental Implant Patients Recruiting University of Pennsylvania Phase 4 2021-02-07 This double-blind pilot study will evaluate the anti-inflammatory and analgesic effects of an over-the-counter (OTC) regimen of naproxen sodium versus acetaminophen in patients receiving one or two (adjacent) dental implants. It will also confirm that naproxen sodium in the OTC dosage range is a good alternative to immediate-release opioid formulations, which are subject to misuse, abuse and diversion in this patient population.
OTC NCT04694300 ↗ OTC Naproxen and Acetaminophen Anti-Inflammatory Action in Dental Implant Patients Recruiting Hersh, Elliot V., DMD, MS, PhD Phase 4 2021-02-07 This double-blind pilot study will evaluate the anti-inflammatory and analgesic effects of an over-the-counter (OTC) regimen of naproxen sodium versus acetaminophen in patients receiving one or two (adjacent) dental implants. It will also confirm that naproxen sodium in the OTC dosage range is a good alternative to immediate-release opioid formulations, which are subject to misuse, abuse and diversion in this patient population.
>Trial Type >Trial ID >Title >Status >Phase >Start Date >Summary

All Clinical Trials for ACETAMINOPHEN; NAPROXEN SODIUM

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00261586 ↗ A Safety Trial to Compare Different Analgesics in Combination With Low Dose Aspirin to Study Their Bleeding Properties and Their Effects on the Stomach Completed Johnson & Johnson Consumer and Personal Products Worldwide Phase 4 1969-12-31 The purpose of this study is to compare several analgesics given in approved daily doses in combination with a daily cardioprotective dose of aspirin (81 mg), to study their bleeding properties and their effects on the stomach in healthy volunteers.
NCT00525993 ↗ Efficacy and Safety of Etoricoxib in Acute Ankle Sprain: A Double-Blind Comparative Study Among 2 Treatments Protocols Unknown status Merck Sharp & Dohme Corp. Phase 4 2008-12-01 The investigators will study 2 doses of etoricoxib to prove that 60 mg once daily will be non-inferior to etoricoxib 90mg daily (for 14 days) in the treatment of acute ankle sprain in sports. The investigators objective is to discuss the point that the investigators will follow the minimal dose that is effective for the treatment of this acute condition in orthopedic.
NCT00525993 ↗ Efficacy and Safety of Etoricoxib in Acute Ankle Sprain: A Double-Blind Comparative Study Among 2 Treatments Protocols Unknown status Núcleo de Estudos em Esportes e Ortopedia, Brazil Phase 4 2008-12-01 The investigators will study 2 doses of etoricoxib to prove that 60 mg once daily will be non-inferior to etoricoxib 90mg daily (for 14 days) in the treatment of acute ankle sprain in sports. The investigators objective is to discuss the point that the investigators will follow the minimal dose that is effective for the treatment of this acute condition in orthopedic.
NCT01080677 ↗ Caffeine/Propranolol Intervention for Acute Migraine Completed Stanford University Phase 2 2007-01-01 This is a research study to assess the safety of caffeine/propranolol at different dose levels. We want to find out what effects, good and/or bad, it has on patients and their migraines.
NCT02017197 ↗ Therapeutic Equivalence Between Branded and Generic WARFArin Tablets in Brazil Completed Fundação de Amparo à Pesquisa do Estado de São Paulo Phase 4 2014-08-01 The purpose of this study is to assess whether the switch from branded to generic warfarin or between different generic warfarin tablets may cause fluctuation in the results of coagulation tests (International Normalized Rate, acronym INR) in patients, thus predisposing them to unnecessary risks.
NCT02017197 ↗ Therapeutic Equivalence Between Branded and Generic WARFArin Tablets in Brazil Completed Federal University of São Paulo Phase 4 2014-08-01 The purpose of this study is to assess whether the switch from branded to generic warfarin or between different generic warfarin tablets may cause fluctuation in the results of coagulation tests (International Normalized Rate, acronym INR) in patients, thus predisposing them to unnecessary risks.
NCT02021474 ↗ A Multicenter, Randomized, Double-blind, Placebo-controlled Trial to Assess the Efficacy and Safety of Subcutaneous Histamine Dihydrochloride for Migraine Prophylaxis Unknown status AgoneX Biopharmaceuticals, Inc. Phase 2 2015-09-01 This is a prospective multi-center, randomized, double-blind, two treatment period, placebo-controlled study in subjects with migraine headache requiring prophylactic treatment. The patients will be randomized to receive either histamine dihydrochloride sc or placebo (matching vehicle only) sc for 16 weeks. The safety and efficacy outcome measures will be assessed at selected dosing segments during the 16 week treatment phase and 4 weeks (week 20), 8 weeks (week 24) after the last Injection.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for ACETAMINOPHEN; NAPROXEN SODIUM

Condition Name

Condition Name for ACETAMINOPHEN; NAPROXEN SODIUM
Intervention Trials
Pain 5
Orthodontic Pain 2
Osseointegrated Dental Implantation 1
Osteoarthritis, Knee 1
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Condition MeSH

Condition MeSH for ACETAMINOPHEN; NAPROXEN SODIUM
Intervention Trials
Pain, Postoperative 4
Migraine Disorders 2
Contusions 1
Osteoarthritis, Knee 1
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Clinical Trial Locations for ACETAMINOPHEN; NAPROXEN SODIUM

Trials by Country

Trials by Country for ACETAMINOPHEN; NAPROXEN SODIUM
Location Trials
United States 22
Brazil 2
Pakistan 1
Canada 1
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Trials by US State

Trials by US State for ACETAMINOPHEN; NAPROXEN SODIUM
Location Trials
Utah 7
Texas 3
Pennsylvania 2
Ohio 2
Illinois 2
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Clinical Trial Progress for ACETAMINOPHEN; NAPROXEN SODIUM

Clinical Trial Phase

Clinical Trial Phase for ACETAMINOPHEN; NAPROXEN SODIUM
Clinical Trial Phase Trials
PHASE3 1
Phase 4 6
Phase 3 3
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Clinical Trial Status

Clinical Trial Status for ACETAMINOPHEN; NAPROXEN SODIUM
Clinical Trial Phase Trials
Completed 11
Not yet recruiting 5
Unknown status 2
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Clinical Trial Sponsors for ACETAMINOPHEN; NAPROXEN SODIUM

Sponsor Name

Sponsor Name for ACETAMINOPHEN; NAPROXEN SODIUM
Sponsor Trials
Bayer 5
Johnson & Johnson Consumer Inc. (J&JCI) 4
Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division 2
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Sponsor Type

Sponsor Type for ACETAMINOPHEN; NAPROXEN SODIUM
Sponsor Trials
Industry 15
Other 9
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