{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Acetaminophen+500mg",
    "query": {
      "intervention": "Acetaminophen 500mg"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 35,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Acetaminophen+500mg&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-05T16:28:43.376Z",
  "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": "NCT01402375",
      "title": "Comparing the Efficacy of Oral Opioids for Outpatient Acute Pain Management After ED Discharge Discharge",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Analgesia After ED Discharge for Extremity Injuries"
      ],
      "interventions": [
        {
          "name": "Hydrocodone (first trial)",
          "type": "DRUG"
        },
        {
          "name": "Codeine (first trial)",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone (for second trial)",
          "type": "DRUG"
        },
        {
          "name": "Codeine (for second trial)",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone (third trial)",
          "type": "DRUG"
        },
        {
          "name": "Hydrocodone (third trial)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Montefiore Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "21 Years to 64 Years"
      },
      "enrollment_count": 720,
      "start_date": "2012-01",
      "completion_date": "2014-11",
      "has_results": true,
      "last_update_posted_date": "2018-05-01",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01402375"
    },
    {
      "nct_id": "NCT07200544",
      "title": "Meloxicam in Mohs Micrographic Surgery",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Postoperative Pain, Acute",
        "Skin Cancer"
      ],
      "interventions": [
        {
          "name": "Meloxicam 7.5 mg",
          "type": "DRUG"
        },
        {
          "name": "Meloxicam 15 mg",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen 500mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Oklahoma",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "110 Years",
        "sex": "ALL",
        "summary": "18 Years to 110 Years"
      },
      "enrollment_count": 300,
      "start_date": "2025-10-15",
      "completion_date": "2026-08-02",
      "has_results": false,
      "last_update_posted_date": "2025-12-15",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07200544"
    },
    {
      "nct_id": "NCT00573170",
      "title": "TREXIMET® Versus Butalbital-containing Combination Medications for the Acute Treatment of Migraine in Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Migraine Disorders",
        "Migraine, Acute"
      ],
      "interventions": [
        {
          "name": "TREXIMET®",
          "type": "DRUG"
        },
        {
          "name": "Butalbital-containing Combination Medications (BCM)",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 375,
      "start_date": "2008-02",
      "completion_date": "2009-08",
      "has_results": true,
      "last_update_posted_date": "2010-12-29",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 107,
      "location_summary": "Chandler, Arizona • Gilbert, Arizona • Litchfield Park, Arizona + 94 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Litchfield Park",
          "state": "Arizona"
        },
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00573170"
    },
    {
      "nct_id": "NCT01104844",
      "title": "Maxi-Analgesic Phase 2 Study to Compare the Analgesic Effects in Different Dosing Groups to Treat Teeth Extraction Pain",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Dental Pain"
      ],
      "interventions": [
        {
          "name": "Full Dose Strength",
          "type": "DRUG"
        },
        {
          "name": "Quarter dose strength",
          "type": "DRUG"
        },
        {
          "name": "Half dose strength",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen standard dose",
          "type": "DRUG"
        },
        {
          "name": "Ibuprofen low dose",
          "type": "DRUG"
        },
        {
          "name": "Ibuprofen high dose",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AFT Pharmaceuticals, Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "16 Years to 40 Years"
      },
      "enrollment_count": 0,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-07-12",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01104844"
    },
    {
      "nct_id": "NCT07225140",
      "title": "A Study of Combogesic® 325 in Adolescent Patients With Moderate to Severe Postoperative Pain Associated With Orthopedic Surgery",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Post Operative Pain, Acute"
      ],
      "interventions": [
        {
          "name": "Combogesic® tablets",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen 500mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AFT Pharmaceuticals, Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "12 Years",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "12 Years to 17 Years"
      },
      "enrollment_count": 180,
      "start_date": "2026-10",
      "completion_date": "2027-10",
      "has_results": false,
      "last_update_posted_date": "2026-07-01",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "Orlando, Florida",
      "locations": [
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07225140"
    },
    {
      "nct_id": "NCT03597308",
      "title": "Prospective Pain Study Comparing Different Treatments After Hand Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Post-operative Pain"
      ],
      "interventions": [
        {
          "name": "5mg of Oxycodone every 6 hours as needed for pain",
          "type": "DRUG"
        },
        {
          "name": "600mg of Ibuprofen every 6 hours as needed for pain",
          "type": "DRUG"
        },
        {
          "name": "500mg of Acetaminophen every 6 hours as needed for pain",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rothman Institute Orthopaedics",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 210,
      "start_date": "2017-03-17",
      "completion_date": "2017-08-01",
      "has_results": false,
      "last_update_posted_date": "2018-07-24",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03597308"
    },
    {
      "nct_id": "NCT03472469",
      "title": "MAST Trial: Multi-modal Analgesic Strategies in Trauma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Nonspecific Pain Post Traumatic Injury"
      ],
      "interventions": [
        {
          "name": "Acetaminophen IV/PO",
          "type": "DRUG"
        },
        {
          "name": "Acetaminophen PO",
          "type": "DRUG"
        },
        {
          "name": "Ketorolac",
          "type": "DRUG"
        },
        {
          "name": "Celebrex",
          "type": "DRUG"
        },
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Tramadol",
          "type": "DRUG"
        },
        {
          "name": "Pregabalin",
          "type": "DRUG"
        },
        {
          "name": "Gabapentin",
          "type": "DRUG"
        },
        {
          "name": "Lidocaine",
          "type": "DRUG"
        },
        {
          "name": "Opioids",
          "type": "DRUG"
        },
        {
          "name": "Regional anesthesia",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center, Houston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 1561,
      "start_date": "2018-04-02",
      "completion_date": "2019-07-03",
      "has_results": true,
      "last_update_posted_date": "2021-06-18",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03472469"
    },
    {
      "nct_id": "NCT02719392",
      "title": "A Pilot Study Investigating the Efficacy of Minocycline and N-Acetyl Cysteine for Bipolar Depression",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Bipolar Disorder",
        "Bipolar Depression"
      ],
      "interventions": [
        {
          "name": "N-acetylcysteine",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Minocycline",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 0,
      "start_date": "2017-08-09",
      "completion_date": "2026-07-20",
      "has_results": false,
      "last_update_posted_date": "2026-07-24",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02719392"
    },
    {
      "nct_id": "NCT02244619",
      "title": "PO vs. IV Acetaminophen Given Perioperatively for 24 hr Post-op Pain Control Following Total Hip or Knee Replacement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Post-op Pain"
      ],
      "interventions": [
        {
          "name": "Oral acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "IV acetaminophen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Kettering Health Network",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 515,
      "start_date": "2014-09",
      "completion_date": "2016-04",
      "has_results": true,
      "last_update_posted_date": "2017-07-24",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "Kettering, Ohio",
      "locations": [
        {
          "city": "Kettering",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02244619"
    },
    {
      "nct_id": "NCT01587274",
      "title": "A Randomized Study of Three Medication Regimens for Acute Low Back Pain",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acute Low Back Pain"
      ],
      "interventions": [
        {
          "name": "Naproxen",
          "type": "DRUG"
        },
        {
          "name": "Cyclobenzaprine",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone/ acetaminophen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Montefiore Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "21 Years to 64 Years"
      },
      "enrollment_count": 323,
      "start_date": "2012-04",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2018-07-31",
      "last_synced_at": "2026-09-05T16:28:43.376Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01587274"
    }
  ]
}