{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+supplements",
    "query": {
      "intervention": "Placebo supplements"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 392,
    "total_pages": 40,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+supplements&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T01:17:17.767Z",
  "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": "NCT00278135",
      "title": "Memory Improvement With Docosahexaenoic Acid Study (MIDAS)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Age-Related Cognitive Decline",
        "Age-Related Memory Disorders"
      ],
      "interventions": [
        {
          "name": "DHA (nutritional supplement) or placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "dsm-firmenich Switzerland AG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "55 Years and older"
      },
      "enrollment_count": 485,
      "start_date": "2005-12",
      "completion_date": "2008-12",
      "has_results": false,
      "last_update_posted_date": "2014-05-19",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 14,
      "location_summary": "Mesa, Arizona • San Diego, California • Vista, California + 11 more",
      "locations": [
        {
          "city": "Mesa",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Vista",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Bradenton",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00278135"
    },
    {
      "nct_id": "NCT02947750",
      "title": "Neurovascular Transduction During Exercise in Chronic Kidney Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Renal Insufficiency, Chronic"
      ],
      "interventions": [
        {
          "name": "6R-BH4",
          "type": "DRUG"
        },
        {
          "name": "6R-BH4 placebo",
          "type": "OTHER"
        },
        {
          "name": "Folic acid",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Exercise training",
          "type": "OTHER"
        },
        {
          "name": "Stretching",
          "type": "OTHER"
        },
        {
          "name": "Histidine and beta-alanine supplementation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Histidine and beta-alanine placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 150,
      "start_date": "2016-10",
      "completion_date": "2027-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-18",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 3,
      "location_summary": "Atlanta, Georgia • Decatur, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Decatur",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02947750"
    },
    {
      "nct_id": "NCT00882505",
      "title": "Comparison of 25-hydroxy Vitamin D Level in Caucasian Women Receiving Vitamin D Supplementation and Not Receiving Supplementation: a Randomized Controlled Trial.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "47 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 47 Years · Female only"
      },
      "enrollment_count": 67,
      "start_date": "2009-04",
      "completion_date": "2010-08",
      "has_results": false,
      "last_update_posted_date": "2021-12-02",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00882505"
    },
    {
      "nct_id": "NCT00729430",
      "title": "Effect of High Dose Fish Oil Supplementation After Recent Heart Attack Using Magnetic Resonance Imaging",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Myocardial Infarction",
        "Death, Sudden, Cardiac"
      ],
      "interventions": [
        {
          "name": "Omega-3 Fatty Acids (Fish Oil Supplements)",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 358,
      "start_date": "2008-08",
      "completion_date": "2014-07",
      "has_results": true,
      "last_update_posted_date": "2017-06-01",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00729430"
    },
    {
      "nct_id": "NCT02838901",
      "title": "Dietary Nitrate Supplements and Ischemic Stroke Recovery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Stroke",
        "Ischemic Stroke",
        "Cerebrovascular Accident"
      ],
      "interventions": [
        {
          "name": "Beet it Beetroot juice",
          "type": "DRUG"
        },
        {
          "name": "Beet It Placebo Beetroot juice",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Wake Forest University Health Sciences",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 18,
      "start_date": "2012-06",
      "completion_date": "2016-06",
      "has_results": true,
      "last_update_posted_date": "2018-04-10",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 1,
      "location_summary": "Winston-Salem, North Carolina",
      "locations": [
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02838901"
    },
    {
      "nct_id": "NCT03580681",
      "title": "A Nutrition Intervention for Arthritis -4 (WCCR-ARTH4)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Rheumatoid Arthritis"
      ],
      "interventions": [
        {
          "name": "Plant-based diet",
          "type": "OTHER"
        },
        {
          "name": "Supplement",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Physicians Committee for Responsible Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 2,
      "start_date": "2018-08-22",
      "completion_date": "2020-06-01",
      "has_results": false,
      "last_update_posted_date": "2021-06-18",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03580681"
    },
    {
      "nct_id": "NCT07141472",
      "title": "Glucagon Like Peptide 1 (GLP-1) Booster™ RCT Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Blood Sugar; High",
        "Overweight and Obesity",
        "Fat Loss",
        "GLP-1",
        "Glucagon"
      ],
      "interventions": [
        {
          "name": "GB",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Lawry Han",
      "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": 69,
      "start_date": "2025-01-07",
      "completion_date": "2025-08-14",
      "has_results": false,
      "last_update_posted_date": "2025-09-03",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07141472"
    },
    {
      "nct_id": "NCT01662466",
      "title": "Effect of Testosterone Treatment on Embryo Quality",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Primary Ovarian Insufficiency",
        "Female Infertility Due to Diminished Ovarian Reserve"
      ],
      "interventions": [
        {
          "name": "Testosterone cream (0.5mg per gram)",
          "type": "DRUG"
        },
        {
          "name": "DHEA",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Center for Human Reproduction",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "38 Years",
        "maximum_age": "44 Years",
        "sex": "FEMALE",
        "summary": "38 Years to 44 Years · Female only"
      },
      "enrollment_count": 180,
      "start_date": "2012-07-01",
      "completion_date": "2022-12-31",
      "has_results": false,
      "last_update_posted_date": "2020-11-12",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 2,
      "location_summary": "New York, New York • Rochester, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01662466"
    },
    {
      "nct_id": "NCT00994396",
      "title": "Vitamin D to Improve Glucose Metabolism and Reduce Inflammation in Obese Adolescents",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Glucose Intolerance",
        "Inflammation"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin D 3 cholecalciferol",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Missouri-Columbia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "19 Years",
        "sex": "ALL",
        "summary": "9 Years to 19 Years"
      },
      "enrollment_count": 44,
      "start_date": "2009-11",
      "completion_date": "2013-04",
      "has_results": false,
      "last_update_posted_date": "2016-10-06",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00994396"
    },
    {
      "nct_id": "NCT04407754",
      "title": "Myo-Inositol for Infertility in PCOS",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Polycystic Ovary Syndrome"
      ],
      "interventions": [
        {
          "name": "Inositol supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo supplement",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Oklahoma",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "36 Years",
        "sex": "ALL",
        "summary": "18 Years to 36 Years"
      },
      "enrollment_count": 168,
      "start_date": "2022-02-07",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-05-12",
      "last_synced_at": "2026-09-03T01:17:17.767Z",
      "location_count": 1,
      "location_summary": "Oklahoma City, Oklahoma",
      "locations": [
        {
          "city": "Oklahoma City",
          "state": "Oklahoma"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04407754"
    }
  ]
}