{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Acetaminophen+500+mg+Tab&page=2",
    "query": {
      "intervention": "Acetaminophen 500 mg Tab",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 35,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Acetaminophen+500+mg+Tab&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Acetaminophen+500+mg+Tab&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-05T04:07:30.546Z",
  "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": "NCT02735122",
      "title": "Study of Acetaminophen (ACM) in Post-operative Dental Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Post Operative Dental Pain"
      ],
      "interventions": [
        {
          "name": "acetaminophen Tablet",
          "type": "DRUG"
        },
        {
          "name": "acetaminophen Caplet",
          "type": "DRUG"
        },
        {
          "name": "ibuprofen Liquid-filled capsule",
          "type": "DRUG"
        },
        {
          "name": "Placebo Tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo Caplet",
          "type": "DRUG"
        },
        {
          "name": "Placebo Liquid-filled capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Johnson & Johnson Consumer Inc., McNeil Consumer Healthcare Division",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "17 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "17 Years to 50 Years"
      },
      "enrollment_count": 420,
      "start_date": "2016-04-30",
      "completion_date": "2016-10-05",
      "has_results": false,
      "last_update_posted_date": "2022-09-28",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02735122"
    },
    {
      "nct_id": "NCT01153503",
      "title": "Ultrasound-guided Transversus Abdominis Plane Block After Hysterectomy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Post Operative Pain"
      ],
      "interventions": [
        {
          "name": "TAP block",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 80 Years · Female only"
      },
      "enrollment_count": 75,
      "start_date": "2010-04",
      "completion_date": "2011-12",
      "has_results": true,
      "last_update_posted_date": "2018-03-01",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01153503"
    },
    {
      "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": "2026-10-05T04:07:30.546Z",
      "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": "NCT01552798",
      "title": "Efficacy of a Single Dose of Aspirin vs. Acetaminophen in Tension Type Headache",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Headache"
      ],
      "interventions": [
        {
          "name": "Acetylsalicylic acid (Aspirin, BAY1019036)",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 9,
      "start_date": "2012-03-12",
      "completion_date": "2012-06-04",
      "has_results": false,
      "last_update_posted_date": "2018-12-19",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 1,
      "location_summary": "Kalamazoo, Michigan",
      "locations": [
        {
          "city": "Kalamazoo",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01552798"
    },
    {
      "nct_id": "NCT02761980",
      "title": "A Study of Ibuprofen 250 mg / Acetaminophen 500 mg Comparing The Antipyretic Effects in Healthy Male Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Fever"
      ],
      "interventions": [
        {
          "name": "Ibuprofen 250 mg / Acetaminophen 500 mg",
          "type": "DRUG"
        },
        {
          "name": "Ibuprofen 250 mg",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen 500 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "MALE",
        "summary": "18 Years to 55 Years · Male only"
      },
      "enrollment_count": 290,
      "start_date": "2016-12-06",
      "completion_date": "2017-12-06",
      "has_results": true,
      "last_update_posted_date": "2018-12-07",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 1,
      "location_summary": "Knoxville, Tennessee",
      "locations": [
        {
          "city": "Knoxville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02761980"
    },
    {
      "nct_id": "NCT01453400",
      "title": "Evaluate the Time of Pain Relief of Fast Acting Aspirin Versus Acetaminophen in Subjects Diagnosed With Sore Throat Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Pharyngitis"
      ],
      "interventions": [
        {
          "name": "Acetylsalicylic Acid (Aspirin, BAY1019036) + placebo",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen + placebo",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 177,
      "start_date": "2011-09-27",
      "completion_date": "2012-04-06",
      "has_results": false,
      "last_update_posted_date": "2018-12-07",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 1,
      "location_summary": "Storrs, Connecticut",
      "locations": [
        {
          "city": "Storrs",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01453400"
    },
    {
      "nct_id": "NCT02848729",
      "title": "Drug Interactions Between Morphine and Orally or IV Administered Acetaminophen",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Pain"
      ],
      "interventions": [
        {
          "name": "Oral Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "IV Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "IV Morphine",
          "type": "DRUG"
        },
        {
          "name": "Placebo Tablets",
          "type": "DRUG"
        },
        {
          "name": "Saline",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mallinckrodt",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 50,
      "start_date": "2016-02",
      "completion_date": "2016-03",
      "has_results": true,
      "last_update_posted_date": "2020-02-05",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 3,
      "location_summary": "Tucson, Arizona • Naples, Florida • Kingston, Rhode Island",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Naples",
          "state": "Florida"
        },
        {
          "city": "Kingston",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02848729"
    },
    {
      "nct_id": "NCT03475693",
      "title": "A Cohort Study Evaluating the Efficacy of PO Magnesium in the Treatment of Acute Traumatic Brain Injury in Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Concussion Post Syndrome"
      ],
      "interventions": [
        {
          "name": "Magnesium Oxide",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Zofran ODT 4 MG Disintegrating Oral Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Corewell Health South",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "12 Years to 18 Years"
      },
      "enrollment_count": 17,
      "start_date": "2017-09-01",
      "completion_date": "2019-12-30",
      "has_results": false,
      "last_update_posted_date": "2024-11-29",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 1,
      "location_summary": "Saint Joseph, Michigan",
      "locations": [
        {
          "city": "Saint Joseph",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03475693"
    },
    {
      "nct_id": "NCT05076110",
      "title": "Nonopioid Pain Control Regimen After Arthroscopic Hip Procedures",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hip Arthroscopy"
      ],
      "interventions": [
        {
          "name": "Oxycodone",
          "type": "DRUG"
        },
        {
          "name": "Ibuprofen",
          "type": "DRUG"
        },
        {
          "name": "Gabapentin",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Methocarbamol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 86,
      "start_date": "2022-04-07",
      "completion_date": "2025-10-25",
      "has_results": true,
      "last_update_posted_date": "2026-06-03",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05076110"
    },
    {
      "nct_id": "NCT01229449",
      "title": "Ibuprofen/Acetaminophen Versus Nurofen Plus® and Panadeine® Extra Dental Pain Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Post-operative Pain"
      ],
      "interventions": [
        {
          "name": "Ibuprofen/acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Ibuprofen/acetaminophen (higher dose)",
          "type": "DRUG"
        },
        {
          "name": "Nurofen Plus®",
          "type": "DRUG"
        },
        {
          "name": "Panadeine® Extra",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Reckitt Benckiser LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 678,
      "start_date": "2009-01",
      "completion_date": "2009-09",
      "has_results": true,
      "last_update_posted_date": "2018-09-17",
      "last_synced_at": "2026-10-05T04:07:30.546Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01229449"
    }
  ]
}