{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+once+per+day",
    "query": {
      "intervention": "Placebo once per day"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 5417,
    "total_pages": 542,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+once+per+day&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T09:04:52.048Z",
  "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": "NCT01466335",
      "title": "An Adaptive Phase I Study to Evaluate the Safety, Efficacy and Dose Responses of Ronacaleret in Healthy Human Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Bone Marrow Transplantation"
      ],
      "interventions": [
        {
          "name": "Ronacaleret (100mg tablet)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "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": 39,
      "start_date": "2011-10-27",
      "completion_date": "2012-03-05",
      "has_results": false,
      "last_update_posted_date": "2017-06-20",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01466335"
    },
    {
      "nct_id": "NCT05812755",
      "title": "SGC Stimulation, Perioperative Vascular Reactivity, and Organ Injury in Cardiac Surgery",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Endothelial Dysfunction",
        "Vascular Diseases",
        "Kidney Injury",
        "Brain Disease",
        "Vascular Inflammation"
      ],
      "interventions": [
        {
          "name": "Vericiguat",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Vanderbilt University 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": 170,
      "start_date": "2023-05-19",
      "completion_date": "2029-07",
      "has_results": false,
      "last_update_posted_date": "2026-08-06",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05812755"
    },
    {
      "nct_id": "NCT00358878",
      "title": "Cirrhotic Ascites Treatment With Satavaptan in Patients With Ascites Due to Cirrhosis of the Liver (CATS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Ascites",
        "Liver Cirrhosis"
      ],
      "interventions": [
        {
          "name": "Satavaptan",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 463,
      "start_date": "2006-07",
      "completion_date": "2008-12",
      "has_results": false,
      "last_update_posted_date": "2016-05-26",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 1,
      "location_summary": "Bridgewater, New Jersey",
      "locations": [
        {
          "city": "Bridgewater",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00358878"
    },
    {
      "nct_id": "NCT04799158",
      "title": "A Study to Evaluate the Efficacy and Safety of Vonoprazan Compared to Placebo in Participants With Symptomatic Non-Erosive Gastroesophageal Reflux Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Non-Erosive Gastro-Esophageal Reflux Disease",
        "Heartburn"
      ],
      "interventions": [
        {
          "name": "Vonoprazan",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Phathom Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 458,
      "start_date": "2021-03-25",
      "completion_date": "2022-01-17",
      "has_results": true,
      "last_update_posted_date": "2023-01-04",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 63,
      "location_summary": "Anniston, Alabama • Athens, Alabama • Huntsville, Alabama + 55 more",
      "locations": [
        {
          "city": "Anniston",
          "state": "Alabama"
        },
        {
          "city": "Athens",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04799158"
    },
    {
      "nct_id": "NCT00905424",
      "title": "Exploratory Study of SPD489 in Adults With Major Depressive Disorder (MDD) as Augmentation Therapy to an Antidepressant",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Major Depressive Disorder"
      ],
      "interventions": [
        {
          "name": "Antidepressant + SPD489 (lisdexamfetamine dimesylate)",
          "type": "DRUG"
        },
        {
          "name": "Antidepressant + placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 246,
      "start_date": "2009-07-30",
      "completion_date": "2010-08-04",
      "has_results": true,
      "last_update_posted_date": "2021-06-14",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 15,
      "location_summary": "Newport Beach, California • San Diego, California • Bradenton, Florida + 12 more",
      "locations": [
        {
          "city": "Newport Beach",
          "state": "California"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Bradenton",
          "state": "Florida"
        },
        {
          "city": "Fort Myers",
          "state": "Florida"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00905424"
    },
    {
      "nct_id": "NCT03600480",
      "title": "A Research Study of How NNC0174-0833 Taken With Semaglutide Works in People Who Are Overweight or Obese",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Obesity",
        "Overweight"
      ],
      "interventions": [
        {
          "name": "NNC0174-0833",
          "type": "DRUG"
        },
        {
          "name": "Semaglutide",
          "type": "DRUG"
        },
        {
          "name": "Placebo (NNC0174-0833)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Novo Nordisk A/S",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 96,
      "start_date": "2018-07-25",
      "completion_date": "2020-06-12",
      "has_results": false,
      "last_update_posted_date": "2021-11-17",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 1,
      "location_summary": "Overland Park, Kansas",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03600480"
    },
    {
      "nct_id": "NCT00928083",
      "title": "A Study to Investigate the Safety, Tolerability and Pharmacokinetics of OZ439 in Healthy Male and Female Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Malaria Falciparum",
        "Malaria Vivax",
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "OZ439 50mg API capsules",
          "type": "DRUG"
        },
        {
          "name": "OZ439 200mg API capsules",
          "type": "DRUG"
        },
        {
          "name": "OZ439 400mg aqueous dispersion",
          "type": "DRUG"
        },
        {
          "name": "OZ439 800mg aqueous dispersion",
          "type": "DRUG"
        },
        {
          "name": "OZ439 100mg API capsules",
          "type": "DRUG"
        },
        {
          "name": "OZ439 400mg API capsules",
          "type": "DRUG"
        },
        {
          "name": "OZ439 1600mg aqueous dispersion",
          "type": "DRUG"
        },
        {
          "name": "OZ439 800mg API capsules",
          "type": "DRUG"
        },
        {
          "name": "OZ439 1200mg API capsules",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "OZ439 200mg aqueous dispersion",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Medicines for Malaria Venture",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 63,
      "start_date": "2009-04",
      "completion_date": "2009-12",
      "has_results": true,
      "last_update_posted_date": "2015-01-08",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 1,
      "location_summary": "Miramar, Florida",
      "locations": [
        {
          "city": "Miramar",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00928083"
    },
    {
      "nct_id": "NCT07734493",
      "title": "A Study of LTX-001 In Adult Participants With Acute Exacerbation of Schizophrenia",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Schizophrenia"
      ],
      "interventions": [
        {
          "name": "LTX-001 once daily",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "LTX-001 twice daily",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Leal Therapeutics, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 90,
      "start_date": "2026-08-03",
      "completion_date": "2027-03",
      "has_results": false,
      "last_update_posted_date": "2026-09-17",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 10,
      "location_summary": "Little Rock, Arkansas • Los Alamitos, California • DeLand, Florida + 6 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Los Alamitos",
          "state": "California"
        },
        {
          "city": "DeLand",
          "state": "Florida"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        },
        {
          "city": "Hollywood",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07734493"
    },
    {
      "nct_id": "NCT04372121",
      "title": "Extension to Study on Efficacy and Safety of Linzagolix for the Treatment of Endometriosis-associated Pain",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Endometriosis"
      ],
      "interventions": [
        {
          "name": "75 mg linzagolix tablet",
          "type": "DRUG"
        },
        {
          "name": "200 mg linzagolix tablet",
          "type": "DRUG"
        },
        {
          "name": "Add-back capsule (E2 1 mg / NETA 0.5 mg)",
          "type": "DRUG"
        },
        {
          "name": "Placebo tablet to match 75 mg linzagolix tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo tablet to match 200 mg linzagolix tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo capsule to match Add-back capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Kissei Pharmaceutical Co., Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 30,
      "start_date": "2020-03-23",
      "completion_date": "2021-02-16",
      "has_results": true,
      "last_update_posted_date": "2025-04-02",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 23,
      "location_summary": "Little Rock, Arkansas • Norwalk, California • Greenwood Village, Colorado + 17 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Norwalk",
          "state": "California"
        },
        {
          "city": "Greenwood Village",
          "state": "Colorado"
        },
        {
          "city": "Lakewood",
          "state": "Colorado"
        },
        {
          "city": "Boca Raton",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04372121"
    },
    {
      "nct_id": "NCT04305587",
      "title": "Multiple Escalating Oral Doses Study of PF-07081532 in Adult Participants With Type 2 Diabetes Mellitus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Diabetes Mellitus Type 2"
      ],
      "interventions": [
        {
          "name": "PF-07081532",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Clopidogrel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Pfizer",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 66,
      "start_date": "2020-03-16",
      "completion_date": "2021-07-14",
      "has_results": true,
      "last_update_posted_date": "2024-02-05",
      "last_synced_at": "2026-09-22T09:04:52.048Z",
      "location_count": 2,
      "location_summary": "Anaheim, California • South Miami, Florida",
      "locations": [
        {
          "city": "Anaheim",
          "state": "California"
        },
        {
          "city": "South Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04305587"
    }
  ]
}