{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=naproxen+500+mg+bid",
    "query": {
      "intervention": "naproxen 500 mg bid"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 41,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=naproxen+500+mg+bid&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-27T10:46:55.552Z",
  "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": "NCT02528188",
      "title": "Long Term Safety and Efficacy Study of Tanezumab in Subjects With Osteoarthritis of the Hip or Knee",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chronic Pain",
        "Osteoarthritis, Hip",
        "Osteoarthritis, Knee"
      ],
      "interventions": [
        {
          "name": "NSAID",
          "type": "DRUG"
        },
        {
          "name": "Tanezumab 2.5 mg",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Tanezumab 5 mg",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "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": 3021,
      "start_date": "2015-07-21",
      "completion_date": "2019-02-27",
      "has_results": true,
      "last_update_posted_date": "2020-01-10",
      "last_synced_at": "2026-09-27T10:46:55.552Z",
      "location_count": 299,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 187 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02528188"
    },
    {
      "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": "2026-09-27T10:46:55.552Z",
      "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": "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": "2026-09-27T10:46:55.552Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04115098"
    },
    {
      "nct_id": "NCT04139824",
      "title": "The Effect of Naproxen on the Pharmacokinetic Profile of LC350189 in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Gout",
        "Hyperuricemia"
      ],
      "interventions": [
        {
          "name": "Xanthine Oxidase Inhibitor",
          "type": "DRUG"
        },
        {
          "name": "nonsteroidal anti-inflammatory drug",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "LG Chem",
      "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": 24,
      "start_date": "2020-01-22",
      "completion_date": "2020-02-25",
      "has_results": false,
      "last_update_posted_date": "2020-06-26",
      "last_synced_at": "2026-09-27T10:46:55.552Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04139824"
    },
    {
      "nct_id": "NCT00662896",
      "title": "To Assess the Effect of Naproxcinod Versus Naproxen and Ibuprofen on Arterial Blood Pressure in Osteoarthritis Patients With Controlled Essential Hypertension",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Osteoarthritis",
        "Hypertension"
      ],
      "interventions": [
        {
          "name": "naproxcinod 375 mg bid",
          "type": "DRUG"
        },
        {
          "name": "naproxcinod 750 mg bid",
          "type": "DRUG"
        },
        {
          "name": "naproxen 250 mg bid",
          "type": "DRUG"
        },
        {
          "name": "naproxen 500 mg bid",
          "type": "DRUG"
        },
        {
          "name": "ibuprofen 600 mg tid",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "NicOx",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2008-03",
      "completion_date": "2008-12",
      "has_results": false,
      "last_update_posted_date": "2011-06-17",
      "last_synced_at": "2026-09-27T10:46:55.552Z",
      "location_count": 57,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Sierra Vista, Arizona + 54 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Sierra Vista",
          "state": "Arizona"
        },
        {
          "city": "Carmichael",
          "state": "California"
        },
        {
          "city": "Fair Oaks",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00662896"
    },
    {
      "nct_id": "NCT00876187",
      "title": "A Study of Tanezumab in Adults With Chronic Low Back Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Low Back Pain"
      ],
      "interventions": [
        {
          "name": "Tanezumab 20 mg IV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo for naproxen",
          "type": "DRUG"
        },
        {
          "name": "Tanezumab 10 mg IV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Tanezumab 5 mg IV",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Placebo for tanezumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Naproxen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "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": 1359,
      "start_date": "2009-06-15",
      "completion_date": "2011-02-01",
      "has_results": true,
      "last_update_posted_date": "2021-07-07",
      "last_synced_at": "2026-09-27T10:46:55.552Z",
      "location_count": 135,
      "location_summary": "Anniston, Alabama • Birmingham, Alabama • Hueytown, Alabama + 101 more",
      "locations": [
        {
          "city": "Anniston",
          "state": "Alabama"
        },
        {
          "city": "Anniston",
          "state": "Alabama"
        },
        {
          "city": "Anniston",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Hueytown",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00876187"
    },
    {
      "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": "2026-09-27T10:46:55.552Z",
      "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"
    },
    {
      "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": "2026-09-27T10:46:55.552Z",
      "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": "NCT00807846",
      "title": "A Study To Evaluate The Effects Of Celecoxib (Celebrex®) Or Naproxen On Blood Pressure In Pediatric Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Arthritis, Juvenile Rheumatoid"
      ],
      "interventions": [
        {
          "name": "Celecoxib",
          "type": "DRUG"
        },
        {
          "name": "Naproxen",
          "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": "2 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "2 Years to 17 Years"
      },
      "enrollment_count": 201,
      "start_date": "2009-09",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2021-02-02",
      "last_synced_at": "2026-09-27T10:46:55.552Z",
      "location_count": 18,
      "location_summary": "Tucson, Arizona • Little Rock, Arkansas • San Diego, California + 9 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Hartford",
          "state": "Connecticut"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00807846"
    },
    {
      "nct_id": "NCT01539447",
      "title": "Influence of Naproxen on Heterotropic Bone Formation Following Hip Arthroscopy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Heterotopic Ossification"
      ],
      "interventions": [
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 108,
      "start_date": "2012-01",
      "completion_date": "2022-03-16",
      "has_results": false,
      "last_update_posted_date": "2022-07-14",
      "last_synced_at": "2026-09-27T10:46:55.552Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01539447"
    }
  ]
}