{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Naproxen+Sodium+550mg",
    "query": {
      "intervention": "Naproxen Sodium 550mg"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-25T02:16:26.357Z",
  "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": "NCT00596245",
      "title": "Open-Label, Placebo-Controlled, Parallel Group Study in Healthy Volunteers to Evaluate the Effects of Two Single MT 400 or Naproxen Sodium Tablets",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "MT400",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 42,
      "start_date": "2007-10",
      "completion_date": "2007-12",
      "has_results": false,
      "last_update_posted_date": "2015-04-16",
      "last_synced_at": "2026-09-25T02:16:26.357Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00596245"
    },
    {
      "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": "2026-09-25T02:16:26.357Z",
      "location_count": 1,
      "location_summary": "Evanston, Illinois",
      "locations": [
        {
          "city": "Evanston",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06861920"
    },
    {
      "nct_id": "NCT03699293",
      "title": "NSAIDs vs. Coxibs in the Presence of Aspirin",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Rheumatoid Arthritis",
        "Cardiovascular Diseases"
      ],
      "interventions": [
        {
          "name": "celecoxib 200mg capsule",
          "type": "DRUG"
        },
        {
          "name": "naproxen sodium 550mg tablet",
          "type": "DRUG"
        },
        {
          "name": "Aspirin 81mg tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Platelet and Thrombosis Research, LLC",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 8,
      "start_date": "2018-09-22",
      "completion_date": "2023-01-01",
      "has_results": true,
      "last_update_posted_date": "2026-05-14",
      "last_synced_at": "2026-09-25T02:16:26.357Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03699293"
    },
    {
      "nct_id": "NCT00114049",
      "title": "Dental Pain (Following Third Molar Tooth Extraction) Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Dental Pain",
        "Surgery, Dental"
      ],
      "interventions": [
        {
          "name": "GW406381",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 300,
      "start_date": "2004-12",
      "completion_date": "2005-04",
      "has_results": false,
      "last_update_posted_date": "2017-01-19",
      "last_synced_at": "2026-09-25T02:16:26.357Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00114049"
    },
    {
      "nct_id": "NCT05900336",
      "title": "Non-Steroidal Anti-Inflammatory Drug (NSAID) Response and Central Sensitization of Pain in Women With Dysmenorrhea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Dysmenorrhea",
        "Menstrual Pain",
        "Non-steroidal Anti-inflammatory Drug"
      ],
      "interventions": [
        {
          "name": "Sodium Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mclean Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 70,
      "start_date": "2024-03-25",
      "completion_date": "2025-08-01",
      "has_results": true,
      "last_update_posted_date": "2026-09-22",
      "last_synced_at": "2026-09-25T02:16:26.357Z",
      "location_count": 1,
      "location_summary": "Belmont, Massachusetts",
      "locations": [
        {
          "city": "Belmont",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05900336"
    }
  ]
}