{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebos+for+acetaminophen+and+N-acetylcysteine",
    "query": {
      "intervention": "Placebos for acetaminophen and N-acetylcysteine"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 11,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebos+for+acetaminophen+and+N-acetylcysteine&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-08T01:25:13.191Z",
  "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": "NCT03480009",
      "title": "Dextromethorphan as a Novel Non-opioid Adjunctive Agent for Pain Control in Medication Abortion",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Abortion in First Trimester"
      ],
      "interventions": [
        {
          "name": "Dextromethorphan Hydrobromide",
          "type": "DRUG"
        },
        {
          "name": "Avicel PH101 (Microcrystalline Cellulose NF) for Compounding",
          "type": "DRUG"
        },
        {
          "name": "Oxycodone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Study Investigator-Sponsor",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 156,
      "start_date": "2018-07-28",
      "completion_date": "2019-06-30",
      "has_results": true,
      "last_update_posted_date": "2020-08-06",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 2,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03480009"
    },
    {
      "nct_id": "NCT05517668",
      "title": "Evaluation of the Efficacy of Fomepizole in the Treatment of Acetaminophen Overdose",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Acetaminophen",
        "Drug Overdose",
        "Acetaminophen Overdose",
        "Acetaminophen Poisoning",
        "Drug-induced Liver Injury",
        "Liver Failure",
        "Liver Toxicity"
      ],
      "interventions": [
        {
          "name": "Intravenous infusion of N-acetylcysteine",
          "type": "DRUG"
        },
        {
          "name": "Intravenous infusion of Fomepizole (4-MP)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Richard Dart, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "10 Years to 99 Years"
      },
      "enrollment_count": 29,
      "start_date": "2022-09-12",
      "completion_date": "2025-11-08",
      "has_results": false,
      "last_update_posted_date": "2025-11-25",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05517668"
    },
    {
      "nct_id": "NCT00397735",
      "title": "N-acetylcysteine in Intra-amniotic Infection/Inflammation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Labor, Premature",
        "Preterm Premature Rupture of the Membranes",
        "Infection",
        "Inflammation",
        "Chorioamnionitis"
      ],
      "interventions": [
        {
          "name": "amniocentesis",
          "type": "PROCEDURE"
        },
        {
          "name": "N-acetylcysteine or placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG"
      ],
      "sponsor": "Ohio State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 68,
      "start_date": "2006-10-01",
      "completion_date": "2018-08-01",
      "has_results": false,
      "last_update_posted_date": "2018-10-10",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 2,
      "location_summary": "New Haven, Connecticut • Columbus, Ohio",
      "locations": [
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00397735"
    },
    {
      "nct_id": "NCT00248625",
      "title": "N-acetylcysteine in Non-Acetaminophen Pediatric Acute Liver Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Acute Liver Failure",
        "Hepatic Encephalopathy"
      ],
      "interventions": [
        {
          "name": "N-acetylcysteine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pittsburgh",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "Up to 18 Years"
      },
      "enrollment_count": 184,
      "start_date": "2000-01",
      "completion_date": "2010-10",
      "has_results": true,
      "last_update_posted_date": "2016-07-28",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 17,
      "location_summary": "San Francisco, California • Denver, Colorado • Atlanta, Georgia + 13 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00248625"
    },
    {
      "nct_id": "NCT00585559",
      "title": "Acetaminophen in aSAH to Inhibit Lipid Peroxidation and Cerebral Vasospasm",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Aneurysmal Subarachnoid Hemorrhage",
        "Cerebral Vasospasm"
      ],
      "interventions": [
        {
          "name": "Placebos for acetaminophen and N-acetylcysteine",
          "type": "DRUG"
        },
        {
          "name": "APAP 1 gm every 6 hours and N-acetylcysteine placebo",
          "type": "DRUG"
        },
        {
          "name": "NAC IV infusion at 0.5 gm hourly and APAP placebo",
          "type": "DRUG"
        },
        {
          "name": "APAP 1 gm q6 hours, plus NAC IV infusion at 0.5 gm hourly",
          "type": "DRUG"
        },
        {
          "name": "APAP 1.5 gm q6 hours, plus NAC IV infusion at 0.5 gm hourly",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "20 Years and older"
      },
      "enrollment_count": 44,
      "start_date": "2007-04",
      "completion_date": "2023-10-26",
      "has_results": true,
      "last_update_posted_date": "2025-04-18",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00585559"
    },
    {
      "nct_id": "NCT04918719",
      "title": "Intravenous N-Acetylcysteine for the Treatment of Acute Ischemic Stroke",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Acute Ischemic Stroke"
      ],
      "interventions": [
        {
          "name": "Acetylcysteine",
          "type": "DRUG"
        },
        {
          "name": "Dextrose in Water",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 4,
      "start_date": "2023-11-02",
      "completion_date": "2024-09-17",
      "has_results": false,
      "last_update_posted_date": "2026-02-19",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 1,
      "location_summary": "Torrance, California",
      "locations": [
        {
          "city": "Torrance",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04918719"
    },
    {
      "nct_id": "NCT00377403",
      "title": "Treatment of Acute Sinusitis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Acute Respiratory Infections",
        "Acute Rhinosinusitis"
      ],
      "interventions": [
        {
          "name": "Acetaminophen",
          "type": "DRUG"
        },
        {
          "name": "Amoxicillin",
          "type": "DRUG"
        },
        {
          "name": "Dextromethorphan hydrobromide with guaifenesin",
          "type": "DRUG"
        },
        {
          "name": "Guaifenesin",
          "type": "DRUG"
        },
        {
          "name": "Pseudoephedrine Sustained Action",
          "type": "DRUG"
        },
        {
          "name": "Saline spray (0.65%)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 172,
      "start_date": "2006-10",
      "completion_date": "2010-08",
      "has_results": true,
      "last_update_posted_date": "2012-12-28",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00377403"
    },
    {
      "nct_id": "NCT00004467",
      "title": "Randomized Study of Acetylcysteine in Patients With Acute Liver Failure Not Caused by Acetaminophen",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Acute Liver Failure"
      ],
      "interventions": [
        {
          "name": "N-acetylcysteine (NAC)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 173,
      "start_date": "1998-06",
      "completion_date": "2006-11",
      "has_results": false,
      "last_update_posted_date": "2017-10-13",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 25,
      "location_summary": "Birmingham, Alabama • Scottsdale, Arizona • Los Angeles, California + 19 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004467"
    },
    {
      "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": "2026-10-08T01:25:13.191Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02719392"
    },
    {
      "nct_id": "NCT02505477",
      "title": "Treatment of Cognitive and Negative Symptoms in Schizophrenia With N-acetylcysteine",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Schizophrenia",
        "Cognitive Deficits",
        "Schizophrenia; Negative Type"
      ],
      "interventions": [
        {
          "name": "N-acetylcysteine",
          "type": "DRUG"
        },
        {
          "name": "Treatment as Usual",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of California, Los Angeles",
      "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": 51,
      "start_date": "2017-02-06",
      "completion_date": "2023-01-31",
      "has_results": false,
      "last_update_posted_date": "2023-05-15",
      "last_synced_at": "2026-10-08T01:25:13.191Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02505477"
    }
  ]
}