{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=extra+strength+acetaminophen",
    "query": {
      "intervention": "extra strength acetaminophen"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-11T22:52:25.053Z",
  "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": "NCT04094701",
      "title": "Hip Arthroscopy Postoperative Opioid Demands",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Opioid Use",
        "Pain",
        "Femoral Acetabular Impingement",
        "Labral Tear, Glenoid"
      ],
      "interventions": [
        {
          "name": "Control Group Regimen",
          "type": "OTHER"
        },
        {
          "name": "Opioid reduced regimen",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Rush University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 170,
      "start_date": "2020-10-21",
      "completion_date": "2028-03",
      "has_results": false,
      "last_update_posted_date": "2026-08-13",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04094701"
    },
    {
      "nct_id": "NCT04149964",
      "title": "Postoperative Pain Control in Septum and Sinus Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Post-operative Pain",
        "Sinus Surgery"
      ],
      "interventions": [
        {
          "name": "Acetaminophen 325 mg Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen 650 mg Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "OxyCODONE 5 mg Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen/Hydrocodone 325 mg/7.5 mg oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Corewell Health East",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 65,
      "start_date": "2019-11-27",
      "completion_date": "2022-09-21",
      "has_results": true,
      "last_update_posted_date": "2023-08-31",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "Farmington Hills, Michigan",
      "locations": [
        {
          "city": "Farmington Hills",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04149964"
    },
    {
      "nct_id": "NCT04694300",
      "title": "OTC Naproxen and Acetaminophen Anti-Inflammatory Action in Dental Implant Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Osseointegrated Dental Implantation",
        "Pain, Acute"
      ],
      "interventions": [
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Tramadol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hersh, Elliot V., DMD, MS, PhD",
      "sponsor_class": "INDIV",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 30,
      "start_date": "2021-02-07",
      "completion_date": "2022-08-28",
      "has_results": true,
      "last_update_posted_date": "2024-05-16",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04694300"
    },
    {
      "nct_id": "NCT03448536",
      "title": "A Study to Assess Menstrual Cramp Pain Associated With Primary Dysmenorrhea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Dysmenorrhea"
      ],
      "interventions": [
        {
          "name": "Naproxen Sodium, (Aleve, BAY117031)",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen (Tylenol Extra Strength)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "15 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "15 Years to 35 Years · Female only"
      },
      "enrollment_count": 201,
      "start_date": "2018-04-05",
      "completion_date": "2018-09-05",
      "has_results": true,
      "last_update_posted_date": "2019-10-28",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 8,
      "location_summary": "Chandler, Arizona • Scottsdale, Arizona • Pinellas Park, Florida + 5 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Pinellas Park",
          "state": "Florida"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Akron",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03448536"
    },
    {
      "nct_id": "NCT07393503",
      "title": "Musculoskeletal Outcomes Using Tylenol/Ibuprofen vs. Oral Steroids in New Injuries",
      "overall_status": "ENROLLING_BY_INVITATION",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Musculoskeletal Pain"
      ],
      "interventions": [
        {
          "name": "Methylprednisolone 4Mg Tab",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen 500Mg Tab",
          "type": "DRUG"
        },
        {
          "name": "Ibuprofen 200Mg Oral Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "State University of New York at Buffalo",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2025-09-17",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2026-02-18",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07393503"
    },
    {
      "nct_id": "NCT02911961",
      "title": "APAP-CYS Protein Adduct Concentrations in Patients With Liver-Directed Therapy Intended to Treat Hepatic Tumors",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acetaminophen Exposure"
      ],
      "interventions": [
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Denver Health and Hospital Authority",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "21 Years to 80 Years"
      },
      "enrollment_count": 0,
      "start_date": "2021-08",
      "completion_date": "2021-08",
      "has_results": false,
      "last_update_posted_date": "2021-09-02",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02911961"
    },
    {
      "nct_id": "NCT01420094",
      "title": "Evaluate Onset of Action of a Fast Release Aspirin",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Healthy Subjects"
      ],
      "interventions": [
        {
          "name": "Acetylsalicyclic acid (Fast release Aspirin, BAY1019036)",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen (Tylenol extra strength)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "16 Years to 45 Years"
      },
      "enrollment_count": 510,
      "start_date": "2011-06-16",
      "completion_date": "2011-09-08",
      "has_results": false,
      "last_update_posted_date": "2018-12-19",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01420094"
    },
    {
      "nct_id": "NCT01264965",
      "title": "Non-cancer Pain and Cognitive Impairment: A Disabling Relationship",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Arthritis",
        "Pain",
        "Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "long acting oxycodone",
          "type": "DRUG"
        },
        {
          "name": "extra strength acetaminophen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "65 Years and older"
      },
      "enrollment_count": 25,
      "start_date": "2011-01",
      "completion_date": "2014-02",
      "has_results": true,
      "last_update_posted_date": "2020-12-11",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01264965"
    },
    {
      "nct_id": "NCT00616018",
      "title": "Acetaminophen Adduct Formation in Non-Drinkers Taking Therapeutic Doses of Acetaminophen for Ten Consecutive Days",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Drug Induced Liver Injury"
      ],
      "interventions": [
        {
          "name": "acetaminophen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Kennon Heard",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 35,
      "start_date": "2007-08",
      "completion_date": "2008-01",
      "has_results": true,
      "last_update_posted_date": "2012-07-12",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00616018"
    },
    {
      "nct_id": "NCT07296770",
      "title": "An Artificial Intelligence Driven Approach to Optimize Patient Selection for a Transitional Pain Service",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Postsurgical Pain Management",
        "Postsurgical Pain, Chronic",
        "Opioid Use After Surgery"
      ],
      "interventions": [
        {
          "name": "TPS-Select",
          "type": "DEVICE"
        },
        {
          "name": "Pharmacologic Pain Management",
          "type": "DRUG"
        },
        {
          "name": "Interventional Pain Procedures",
          "type": "PROCEDURE"
        },
        {
          "name": "Psychological Management and Pain Education",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Physical Therapy",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DEVICE",
        "DRUG",
        "PROCEDURE",
        "BEHAVIORAL"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 126,
      "start_date": "2026-10-01",
      "completion_date": "2028-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-13",
      "last_synced_at": "2026-09-11T22:52:25.053Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07296770"
    }
  ]
}