{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Analgesic+Efficacy&page=2",
    "query": {
      "condition": "Analgesic Efficacy",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Analgesic+Efficacy&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-06-26T19:02:00.058Z",
  "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": "NCT03661996",
      "title": "An Open-label, 8-week Safety, Efficacy, and Assessment of Cooling Methods for Administration of CNTX-4975-05 for Knee OA",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Knee Osteoarthritis"
      ],
      "interventions": [
        {
          "name": "CNTX-4975-05",
          "type": "DRUG"
        },
        {
          "name": "Lidocaine without epinephrine",
          "type": "DRUG"
        },
        {
          "name": "ElastoGel",
          "type": "DEVICE"
        },
        {
          "name": "Breg Ice Water Pump",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Centrexion Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "95 Years",
        "sex": "ALL",
        "summary": "40 Years to 95 Years"
      },
      "enrollment_count": 854,
      "start_date": "2018-09-18",
      "completion_date": "2019-10-22",
      "has_results": true,
      "last_update_posted_date": "2022-03-09",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 28,
      "location_summary": "Birmingham, Alabama • Peoria, Arizona • Tucson, Arizona + 24 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Carmichael",
          "state": "California"
        },
        {
          "city": "Cerritos",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03661996"
    },
    {
      "nct_id": "NCT01118273",
      "title": "Evaluate Analgesic/Sedative Efficacy of Naproxen Sodium and Diphenhydramine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Sleep"
      ],
      "interventions": [
        {
          "name": "Naproxen Sodium 440 mg (BAYH6689) / DPH 50mg",
          "type": "DRUG"
        },
        {
          "name": "Naproxen Sodium 440 mg (BAYH6689)",
          "type": "DRUG"
        },
        {
          "name": "Naproxen Sodium 220 mg (BAYH6689) / DPH 50mg",
          "type": "DRUG"
        },
        {
          "name": "Naproxen Sodium 220 mg (BAYH6689)",
          "type": "DRUG"
        },
        {
          "name": "DPH 50mg",
          "type": "DRUG"
        },
        {
          "name": "Ibuprofen 400 mg / Diphenhydramine citrate 76 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "16 Years to 45 Years"
      },
      "enrollment_count": 162,
      "start_date": "2008-01",
      "completion_date": "2008-02",
      "has_results": true,
      "last_update_posted_date": "2015-06-08",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01118273"
    },
    {
      "nct_id": "NCT01064024",
      "title": "Evaluate the Safety and Efficacy of Phenazopyridine Hydrochloride Tablets, USP 200 mg vs. Placebo",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pain",
        "Urinary Tract Infections"
      ],
      "interventions": [
        {
          "name": "Phenazopyridine Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Amneal Pharmaceuticals, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 233,
      "start_date": "2009-12",
      "completion_date": "2010-12",
      "has_results": false,
      "last_update_posted_date": "2013-01-29",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 1,
      "location_summary": "Totowa, New Jersey",
      "locations": [
        {
          "city": "Totowa",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01064024"
    },
    {
      "nct_id": "NCT01544062",
      "title": "IV Acetaminophen as an Adjunct Analgesic in Cardiac Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acute Pain",
        "Hyperalgesia"
      ],
      "interventions": [
        {
          "name": "IV acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "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": 68,
      "start_date": "2012-07",
      "completion_date": "2014-08",
      "has_results": true,
      "last_update_posted_date": "2016-06-21",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01544062"
    },
    {
      "nct_id": "NCT02532322",
      "title": "Efficacy of Acetaminophen in Posterior Fossa Surgery",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Arnold-Chiari Malformation",
        "Posterior Fossa Tumors"
      ],
      "interventions": [
        {
          "name": "IV acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "normal saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Children's National Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": "12 Years",
        "sex": "ALL",
        "summary": "2 Years to 12 Years"
      },
      "enrollment_count": 0,
      "start_date": "2015-11",
      "completion_date": "2018-10",
      "has_results": false,
      "last_update_posted_date": "2021-04-08",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02532322"
    },
    {
      "nct_id": "NCT05991687",
      "title": "Methods for Effective Disposal of Surplus Analgesics to Facilitate Elimination",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Surgery",
        "Analgesics, Opioids"
      ],
      "interventions": [
        {
          "name": "In-home drug disposal pouch",
          "type": "OTHER"
        },
        {
          "name": "Mail-in prepaid envelope",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2023-07-31",
      "completion_date": "2026-08",
      "has_results": false,
      "last_update_posted_date": "2026-03-12",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05991687"
    },
    {
      "nct_id": "NCT02487108",
      "title": "Study to Evaluate the Analgesic Efficacy and Safety of Hydrocodone Bitartrate/Acetaminophen Immediate-Release Tablets in Participants With Moderate to Severe Pain Following Bunionectomy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "TV-46763",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Teva Branded Pharmaceutical Products R&D, Inc.",
      "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": 569,
      "start_date": "2015-08-11",
      "completion_date": "2016-03-30",
      "has_results": true,
      "last_update_posted_date": "2022-03-31",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 8,
      "location_summary": "Phoenix, Arizona • Anaheim, California • Bakersfield, California + 5 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "California"
        },
        {
          "city": "Pasadena",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02487108"
    },
    {
      "nct_id": "NCT01960114",
      "title": "Study of Long-Acting Acetaminophen in Postoperative Dental Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Dental Pain"
      ],
      "interventions": [
        {
          "name": "Acetaminophen ER",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "McNeil Consumer Healthcare Division of McNEIL-PPC, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "17 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "17 Years to 45 Years"
      },
      "enrollment_count": 403,
      "start_date": "2013-10",
      "completion_date": "2014-04",
      "has_results": true,
      "last_update_posted_date": "2015-07-10",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01960114"
    },
    {
      "nct_id": "NCT00763321",
      "title": "Study to Evaluate the Safety and Efficacy of ABT-712 in Subjects With Moderate to Severe Chronic Low Back Pain (CLBP)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Chronic Low Back Pain"
      ],
      "interventions": [
        {
          "name": "ABT-712",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AbbVie (prior sponsor, Abbott)",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "21 Years to 75 Years"
      },
      "enrollment_count": 287,
      "start_date": "2008-09",
      "completion_date": "2009-04",
      "has_results": true,
      "last_update_posted_date": "2014-02-06",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 31,
      "location_summary": "Huntsville, Alabama • Burbank, California • San Diego, California + 27 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Burbank",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Atlantis",
          "state": "Florida"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00763321"
    },
    {
      "nct_id": "NCT02025634",
      "title": "Intravenous Acetaminophen for Non-Narcotic Postoperative Pain Management Following Knee Arthroscopy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pain, Postoperative"
      ],
      "interventions": [
        {
          "name": "Intravenous Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Placebo (0.9% Normal Saline infusion)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AdventHealth",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 119,
      "start_date": "2013-11",
      "completion_date": "2015-07",
      "has_results": true,
      "last_update_posted_date": "2020-10-26",
      "last_synced_at": "2026-06-26T19:02:00.058Z",
      "location_count": 1,
      "location_summary": "Celebration, Florida",
      "locations": [
        {
          "city": "Celebration",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02025634"
    }
  ]
}