{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Naproxen+500-mg+Capsules",
    "query": {
      "intervention": "Naproxen 500-mg Capsules"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 11,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Naproxen+500-mg+Capsules&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-23T13:08:09.395Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT00626275",
      "title": "Study Evaluating the Analgesic Efficacy and Safety of ADL5859 in Participants With Rheumatoid Arthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Rheumatoid Arthritis"
      ],
      "interventions": [
        {
          "name": "ADL5859",
          "type": "DRUG"
        },
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 46,
      "start_date": "2007-10",
      "completion_date": "2008-09",
      "has_results": true,
      "last_update_posted_date": "2015-07-01",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 8,
      "location_summary": "Trumbull, Connecticut • Daytona Beach, Florida • Wheaton, Maryland + 5 more",
      "locations": [
        {
          "city": "Trumbull",
          "state": "Connecticut"
        },
        {
          "city": "Daytona Beach",
          "state": "Florida"
        },
        {
          "city": "Wheaton",
          "state": "Maryland"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00626275"
    },
    {
      "nct_id": "NCT01229228",
      "title": "Study of Naproxen Capsules to Treat Dental Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Dental Pain"
      ],
      "interventions": [
        {
          "name": "Naproxen Test",
          "type": "DRUG"
        },
        {
          "name": "Naprosyn",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Iroko Pharmaceuticals, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 254,
      "start_date": "2010-10",
      "completion_date": "2011-04",
      "has_results": true,
      "last_update_posted_date": "2012-05-22",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01229228"
    },
    {
      "nct_id": "NCT00780325",
      "title": "Effects of Dual Cyclooxygenase-2 and Carbonic Anhydrase Inhibition",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "CG100649 (2 mg)",
          "type": "DRUG"
        },
        {
          "name": "Celecoxib",
          "type": "DRUG"
        },
        {
          "name": "Placebo capsules",
          "type": "DRUG"
        },
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Acetazolamide",
          "type": "DRUG"
        },
        {
          "name": "CG100649 (8 mg)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 26,
      "start_date": "2008-10",
      "completion_date": "2013-07",
      "has_results": false,
      "last_update_posted_date": "2014-02-06",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00780325"
    },
    {
      "nct_id": "NCT04115098",
      "title": "Individualizing Anti-Inflammatory Medications for Adults With Axial Spondyloarthritis: A Series of N-of 1 Trials",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Axial Spondyloarthritis"
      ],
      "interventions": [
        {
          "name": "Celecoxib",
          "type": "DRUG"
        },
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Meloxicam",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 42,
      "start_date": "2020-06-25",
      "completion_date": "2023-08-11",
      "has_results": true,
      "last_update_posted_date": "2025-08-13",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04115098"
    },
    {
      "nct_id": "NCT01688934",
      "title": "Analgesic Efficacy and Safety of V116517 in Subjects With Moderate to Severe Chronic Pain Due to Osteoarthritis (OA) of the Knee",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis, Knee",
        "Pain"
      ],
      "interventions": [
        {
          "name": "V116517 50-mg tablets",
          "type": "DRUG"
        },
        {
          "name": "V116517 30-mg tablets",
          "type": "DRUG"
        },
        {
          "name": "Naproxen 500-mg capsules",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Purdue Pharma LP",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 230,
      "start_date": "2012-09",
      "completion_date": "2013-08",
      "has_results": false,
      "last_update_posted_date": "2013-12-05",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 18,
      "location_summary": "Tucson, Arizona • Boynton Beach, Florida • DeLand, Florida + 13 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Boynton Beach",
          "state": "Florida"
        },
        {
          "city": "DeLand",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01688934"
    },
    {
      "nct_id": "NCT00643799",
      "title": "Safety and Efficacy of Celecoxib Versus Naproxen in the 6-month Treatment of Knee Osteoarthritis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "Celecoxib",
          "type": "DRUG"
        },
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer's Upjohn has merged with Mylan to form Viatris Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 586,
      "start_date": "2004-03",
      "completion_date": "2005-01",
      "has_results": false,
      "last_update_posted_date": "2021-02-02",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 51,
      "location_summary": "Montgomery, Alabama • Phoenix, Arizona • Tempe, Arizona + 41 more",
      "locations": [
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tempe",
          "state": "Arizona"
        },
        {
          "city": "Buena Park",
          "state": "California"
        },
        {
          "city": "Paramount",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00643799"
    },
    {
      "nct_id": "NCT06861920",
      "title": "NSAID Use for Treating Dysmenorrhea and Preventing Chronic Pelvic Pain (NSAID HEAL)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Dysmenorrhea",
        "Chronic Pelvic Pain",
        "Pelvic Pain"
      ],
      "interventions": [
        {
          "name": "Naproxen Sodium 550mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Extended Release Acetaminophen (650 mg)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Endeavor Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 600,
      "start_date": "2025-04-07",
      "completion_date": "2030-07",
      "has_results": false,
      "last_update_posted_date": "2025-08-07",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 1,
      "location_summary": "Evanston, Illinois",
      "locations": [
        {
          "city": "Evanston",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06861920"
    },
    {
      "nct_id": "NCT00650455",
      "title": "Efficacy and Safety of Valdecoxib and Naproxen in Treating the Signs and Symptoms of Rheumatoid Arthritis (RA) in a Severe Rheumatoid Arthritis Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Arthritis, Rheumatoid"
      ],
      "interventions": [
        {
          "name": "valdecoxib",
          "type": "DRUG"
        },
        {
          "name": "naproxen",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 489,
      "start_date": "2003-02",
      "completion_date": "2005-01",
      "has_results": false,
      "last_update_posted_date": "2008-07-21",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 52,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Glendale, Arizona + 46 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Glendale",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00650455"
    },
    {
      "nct_id": "NCT03028870",
      "title": "A Study to Evaluate the Analgesic Efficacy and Safety of V120083 in Subjects With Osteoarthritis (OA) of the Knee",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteo Arthritis Knee"
      ],
      "interventions": [
        {
          "name": "V120083",
          "type": "DRUG"
        },
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Purdue Pharma LP",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 291,
      "start_date": "2017-03-14",
      "completion_date": "2017-11-21",
      "has_results": true,
      "last_update_posted_date": "2019-02-12",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 30,
      "location_summary": "Birmingham, Alabama • Tuscumbia, Alabama • North Hollywood, California + 24 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Tuscumbia",
          "state": "Alabama"
        },
        {
          "city": "North Hollywood",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Marcos",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03028870"
    },
    {
      "nct_id": "NCT02847702",
      "title": "A Study to Evaluate the Analgesic Efficacy and Safety of VM902A in Subjects With Osteoarthritis (OA) of the Knee",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Osteoarthritis Pain of the Knee"
      ],
      "interventions": [
        {
          "name": "VM902A 200-mg Capsules",
          "type": "DRUG"
        },
        {
          "name": "VM902A 400-mg Capsules",
          "type": "DRUG"
        },
        {
          "name": "Naproxen 500-mg Capsules",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Purdue Pharma LP",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "40 Years to 75 Years"
      },
      "enrollment_count": 75,
      "start_date": "2016-08",
      "completion_date": "2016-11-22",
      "has_results": false,
      "last_update_posted_date": "2017-11-22",
      "last_synced_at": "2026-09-23T13:08:09.395Z",
      "location_count": 31,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • DeLand, Florida + 28 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "DeLand",
          "state": "Florida"
        },
        {
          "city": "Hialeah",
          "state": "Florida"
        },
        {
          "city": "Homestead",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02847702"
    }
  ]
}