{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+placebo+supplement&page=4",
    "query": {
      "intervention": "Oral placebo supplement",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 310,
    "total_pages": 31,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+placebo+supplement&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Oral+placebo+supplement&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-06T05:52:55.567Z",
  "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": "NCT00354432",
      "title": "Soy Protein/Effexor Hormone Therapy for Prostate Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hot Flashes",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "oral soy protein/isoflavones powder",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Venlafaxine",
          "type": "DRUG"
        },
        {
          "name": "Placebo Powder",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo Pill",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "21 Years and older · Male only"
      },
      "enrollment_count": 120,
      "start_date": "2007-02-01",
      "completion_date": "2010-08-01",
      "has_results": true,
      "last_update_posted_date": "2021-09-28",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 20,
      "location_summary": "Newark, Delaware • Chicago, Illinois • Decatur, Illinois + 15 more",
      "locations": [
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Decatur",
          "state": "Illinois"
        },
        {
          "city": "South Bend",
          "state": "Indiana"
        },
        {
          "city": "Cedar Rapids",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00354432"
    },
    {
      "nct_id": "NCT06265532",
      "title": "Collagen-targeted Positron Emission Tomography (PET) Imaging for Assessment of EGCG Effect",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Idiopathic Pulmonary Fibrosis"
      ],
      "interventions": [
        {
          "name": "EGCG 300 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo for EGCG 300 mg",
          "type": "DRUG"
        },
        {
          "name": "EGCG 600 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo for EGCG 600 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Hal Chapman",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "40 Years to 85 Years"
      },
      "enrollment_count": 12,
      "start_date": "2024-02-07",
      "completion_date": "2026-01-08",
      "has_results": false,
      "last_update_posted_date": "2026-04-14",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 3,
      "location_summary": "Boston, Massachusetts • Ann Arbor, Michigan • Charlottesville, Virginia",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Charlottesville",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06265532"
    },
    {
      "nct_id": "NCT06628869",
      "title": "The Effects of Oral Fructanase Administration on Gastrointestinal Symptoms After Inulin Challenge in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Digestive Health",
        "Gastrointestinal Health",
        "FODMAP Intolerance",
        "Food Sensitivity"
      ],
      "interventions": [
        {
          "name": "Fructanase",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Maltodextrin placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "BIO-CAT, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "20 Years to 50 Years"
      },
      "enrollment_count": 30,
      "start_date": "2024-11-04",
      "completion_date": "2024-12-17",
      "has_results": false,
      "last_update_posted_date": "2026-09-30",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 1,
      "location_summary": "Addison, Illinois",
      "locations": [
        {
          "city": "Addison",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06628869"
    },
    {
      "nct_id": "NCT03797469",
      "title": "Nutritional Supplements and Performance During Visual Field Testing (B3 Vitamin)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Visual Field Defect, Peripheral",
        "Glaucoma, Open-Angle"
      ],
      "interventions": [
        {
          "name": "Vitamin B3",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Pyruvate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "40 Years to 80 Years"
      },
      "enrollment_count": 32,
      "start_date": "2019-04-15",
      "completion_date": "2020-12-31",
      "has_results": false,
      "last_update_posted_date": "2021-11-11",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03797469"
    },
    {
      "nct_id": "NCT03206567",
      "title": "Efficacy and Safety of a Nutraceutical Supplement With Standardized Botanicals in Women With Thinning Hair",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hair Thinning"
      ],
      "interventions": [
        {
          "name": "Nutrafol Supplement capsules",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo capsules",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Ablon Skin Institute Research Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "21 Years to 65 Years · Female only"
      },
      "enrollment_count": 40,
      "start_date": "2017-05-04",
      "completion_date": "2018-03-01",
      "has_results": false,
      "last_update_posted_date": "2019-08-07",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 1,
      "location_summary": "Manhattan Beach, California",
      "locations": [
        {
          "city": "Manhattan Beach",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03206567"
    },
    {
      "nct_id": "NCT01141504",
      "title": "Effect of Oral Adenosine-triphosphate (ATP) on Human Muscle Performance",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Subjects"
      ],
      "interventions": [
        {
          "name": "PeakATP 250",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "PeakATP 400",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "PeakATP 400 plus proprietary blend",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Metabolic Technologies Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "20 Years to 30 Years"
      },
      "enrollment_count": 16,
      "start_date": "2010-06",
      "completion_date": "2011-10",
      "has_results": false,
      "last_update_posted_date": "2012-01-10",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 1,
      "location_summary": "Ames, Iowa",
      "locations": [
        {
          "city": "Ames",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01141504"
    },
    {
      "nct_id": "NCT07138443",
      "title": "Influence of Melatonin on Cardiovascular and Thermoregulatory Responses to Stress",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Stress",
        "Mental Stress"
      ],
      "interventions": [
        {
          "name": "Melatonin 3 MG Oral Tablet",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo Oral Tablet",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Baylor University",
      "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": 16,
      "start_date": "2025-08-01",
      "completion_date": "2026-07-20",
      "has_results": false,
      "last_update_posted_date": "2026-07-21",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 1,
      "location_summary": "Waco, Texas",
      "locations": [
        {
          "city": "Waco",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07138443"
    },
    {
      "nct_id": "NCT01125436",
      "title": "A Trial of Vitamin D Therapy in Patients With Heart Failure",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Case Western Reserve University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 64,
      "start_date": "2008-07",
      "completion_date": "2011-09",
      "has_results": true,
      "last_update_posted_date": "2022-08-10",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01125436"
    },
    {
      "nct_id": "NCT05405244",
      "title": "Examination of Bromocriptine on Homeostatic and Hedonic Mechanisms of Food Intake in Individuals at High Risk for T2DM",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Overweight and Obesity",
        "Eating Behavior"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Bromocriptine-QR",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 55,
      "start_date": "2017-09-19",
      "completion_date": "2019-09-19",
      "has_results": true,
      "last_update_posted_date": "2022-09-07",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05405244"
    },
    {
      "nct_id": "NCT01845493",
      "title": "Sulforaphane Supplementation in Atopic Asthmatics",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Asthma"
      ],
      "interventions": [
        {
          "name": "Alpha Sprout Homogenate",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Sulforaphane Homogenate",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 16,
      "start_date": "2013-04",
      "completion_date": "2014-10",
      "has_results": false,
      "last_update_posted_date": "2016-03-09",
      "last_synced_at": "2026-10-06T05:52:55.567Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01845493"
    }
  ]
}