{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Aspirin+%28ASA%29+placebo&page=7",
    "query": {
      "intervention": "Aspirin (ASA) placebo",
      "page": 7
    },
    "page_size": 10
  },
  "pagination": {
    "page": 7,
    "page_size": 10,
    "total_count": 182,
    "total_pages": 19,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Aspirin+%28ASA%29+placebo&page=8&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Aspirin+%28ASA%29+placebo&page=6&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-13T22:07:16.870Z",
  "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": "NCT05962034",
      "title": "Thromboxane Function in Women With Endometriosis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Endometriosis"
      ],
      "interventions": [
        {
          "name": "Aspirin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Penn State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 21,
      "start_date": "2024-01-01",
      "completion_date": "2026-07-23",
      "has_results": false,
      "last_update_posted_date": "2026-07-27",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 1,
      "location_summary": "University Park, Pennsylvania",
      "locations": [
        {
          "city": "University Park",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05962034"
    },
    {
      "nct_id": "NCT04498273",
      "title": "COVID-19 Positive Outpatient Thrombosis Prevention in Adults Aged 40-80",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "COVID-19"
      ],
      "interventions": [
        {
          "name": "Apixaban 2.5 MG",
          "type": "DRUG"
        },
        {
          "name": "Apixaban 5MG",
          "type": "DRUG"
        },
        {
          "name": "Aspirin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Frank C Sciurba",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 657,
      "start_date": "2020-09-07",
      "completion_date": "2021-08-05",
      "has_results": true,
      "last_update_posted_date": "2022-02-17",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 71,
      "location_summary": "Los Angeles, California • Palo Alto, California • San Francisco, California + 51 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Sylmar",
          "state": "California"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04498273"
    },
    {
      "nct_id": "NCT00983580",
      "title": "Acetylsalicylic Acid and Eflornithine in Treating Patients at High Risk for Colorectal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adenomatous Polyp"
      ],
      "interventions": [
        {
          "name": "Aspirin",
          "type": "DRUG"
        },
        {
          "name": "Eflornithine",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Telephone-Based Intervention",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 107,
      "start_date": "2009-08-20",
      "completion_date": "2019-08-13",
      "has_results": true,
      "last_update_posted_date": "2019-09-04",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 3,
      "location_summary": "Chicago, Illinois • Rochester, Minnesota",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00983580"
    },
    {
      "nct_id": "NCT02239120",
      "title": "Dabigatran Etexilate for Secondary Stroke Prevention in Patients With Embolic Stroke of Undetermined Source (RE-SPECT ESUS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Stroke",
        "Secondary Prevention"
      ],
      "interventions": [
        {
          "name": "optional ASA as comedication",
          "type": "DRUG"
        },
        {
          "name": "placebo to ASA",
          "type": "DRUG"
        },
        {
          "name": "placebo to optional ASA as comedication",
          "type": "DRUG"
        },
        {
          "name": "placebo to dabigatran etexilate",
          "type": "DRUG"
        },
        {
          "name": "ASA 100 mg",
          "type": "DRUG"
        },
        {
          "name": "dabigatran etexilate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "150 Years",
        "sex": "ALL",
        "summary": "18 Years to 150 Years"
      },
      "enrollment_count": 5390,
      "start_date": "2014-11-27",
      "completion_date": "2018-08-14",
      "has_results": true,
      "last_update_posted_date": "2019-09-06",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 110,
      "location_summary": "Phoenix, Arizona • Beverly Hills, California • El Cajon, California + 94 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        },
        {
          "city": "El Cajon",
          "state": "California"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Glendale",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02239120"
    },
    {
      "nct_id": "NCT01275300",
      "title": "Biosynthesis of PGD2 in Vivo",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hyperlipidemia"
      ],
      "interventions": [
        {
          "name": "Aspirin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Niacin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 9,
      "start_date": "2007-07",
      "completion_date": "2012-01",
      "has_results": true,
      "last_update_posted_date": "2026-02-09",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01275300"
    },
    {
      "nct_id": "NCT02313909",
      "title": "Rivaroxaban Versus Aspirin in Secondary Prevention of Stroke and Prevention of Systemic Embolism in Patients With Recent Embolic Stroke of Undetermined Source (ESUS)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Stroke"
      ],
      "interventions": [
        {
          "name": "Rivaroxaban (Xarelto, BAY59-7939)",
          "type": "DRUG"
        },
        {
          "name": "Acetylsalicylic acid (Aspirin, BAY1019036)",
          "type": "DRUG"
        },
        {
          "name": "Rivaroxaban-Placebo",
          "type": "OTHER"
        },
        {
          "name": "Aspirin-Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Bayer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 7213,
      "start_date": "2014-12-23",
      "completion_date": "2018-02-15",
      "has_results": true,
      "last_update_posted_date": "2019-01-09",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 38,
      "location_summary": "Tucson, Arizona • Long Beach, California • Stanford, California + 32 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02313909"
    },
    {
      "nct_id": "NCT04697719",
      "title": "Body Weight, Aspirin Dose and Pro-resolving Mediators",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Body Weight"
      ],
      "interventions": [
        {
          "name": "Aspirin 81mg",
          "type": "DRUG"
        },
        {
          "name": "Aspirin 325mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "40 Years to 70 Years"
      },
      "enrollment_count": 103,
      "start_date": "2021-11-04",
      "completion_date": "2025-01-29",
      "has_results": false,
      "last_update_posted_date": "2026-03-09",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04697719"
    },
    {
      "nct_id": "NCT05009862",
      "title": "The Impact of Factor Xa Inhibition on Thrombosis, Platelet Activation, and Endothelial Function in Peripheral Artery Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Peripheral Arterial Disease"
      ],
      "interventions": [
        {
          "name": "Rivaroxaban 2.5 Mg Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Aspirin 81Mg Ec Tab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "40 Years and older"
      },
      "enrollment_count": 60,
      "start_date": "2022-04-19",
      "completion_date": "2025-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-14",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05009862"
    },
    {
      "nct_id": "NCT01066923",
      "title": "Enhanced Firefighter Rehab Trial: The Role of Aspirin in Preventing Heat Stress Induced Platelet Activation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heat Stress Disorders"
      ],
      "interventions": [
        {
          "name": "Daily aspirin (ASA)",
          "type": "DRUG"
        },
        {
          "name": "Active cooling",
          "type": "OTHER"
        },
        {
          "name": "Acute aspirin (ASA)",
          "type": "DRUG"
        },
        {
          "name": "Passive cooling",
          "type": "OTHER"
        },
        {
          "name": "Daily placebo",
          "type": "DRUG"
        },
        {
          "name": "Acute placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Dave Hostler",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "49 Years",
        "sex": "ALL",
        "summary": "18 Years to 49 Years"
      },
      "enrollment_count": 124,
      "start_date": "2010-02",
      "completion_date": "2011-06",
      "has_results": true,
      "last_update_posted_date": "2017-11-13",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 1,
      "location_summary": "Pittsburgh, Pennsylvania",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01066923"
    },
    {
      "nct_id": "NCT02761486",
      "title": "Effect of Aspirin on Gut Microbiome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Aspirin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "50 Years to 75 Years"
      },
      "enrollment_count": 50,
      "start_date": "2016-08",
      "completion_date": "2018-08-29",
      "has_results": false,
      "last_update_posted_date": "2020-06-26",
      "last_synced_at": "2026-10-13T22:07:16.870Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02761486"
    }
  ]
}