{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=placebo+control+group",
    "query": {
      "intervention": "placebo control group"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 9084,
    "total_pages": 909,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=placebo+control+group&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-04T13:15:43.626Z",
  "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": "NCT02675998",
      "title": "An 8-Week Study to Evaluate Tenapanor in the Treatment of Hyperphosphatemia in End-Stage Renal Disease Patients on Hemodialysis (ESRD-HD)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Hyperphosphatemia"
      ],
      "interventions": [
        {
          "name": "Tenapanor",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ardelyx",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 219,
      "start_date": "2016-01",
      "completion_date": "2018-01-17",
      "has_results": true,
      "last_update_posted_date": "2020-08-10",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 32,
      "location_summary": "Huntsville, Alabama • Riverside, California • Denver, Colorado + 28 more",
      "locations": [
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Riverside",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Lauderdale Lakes",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02675998"
    },
    {
      "nct_id": "NCT04141163",
      "title": "Metformin in Patients With Fragile X",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Fragile X Syndrome"
      ],
      "interventions": [
        {
          "name": "Metformin",
          "type": "DRUG"
        },
        {
          "name": "Placebo oral tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Rowan University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "MALE",
        "summary": "18 Years to 50 Years · Male only"
      },
      "enrollment_count": 40,
      "start_date": "2019-10-29",
      "completion_date": "2021-03",
      "has_results": false,
      "last_update_posted_date": "2019-10-31",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 1,
      "location_summary": "Stratford, New Jersey",
      "locations": [
        {
          "city": "Stratford",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04141163"
    },
    {
      "nct_id": "NCT05552898",
      "title": "Radicle Sleep: A Study of Plant Derived Cannabinoids on Sleep and Overall Health Outcomes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Sleep"
      ],
      "interventions": [
        {
          "name": "Sleep Study Product Usage",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Radicle Science",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "105 Years",
        "sex": "ALL",
        "summary": "21 Years to 105 Years"
      },
      "enrollment_count": 1750,
      "start_date": "2022-03-01",
      "completion_date": "2022-08-26",
      "has_results": false,
      "last_update_posted_date": "2023-11-22",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 1,
      "location_summary": "Del Mar, California",
      "locations": [
        {
          "city": "Del Mar",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05552898"
    },
    {
      "nct_id": "NCT00345384",
      "title": "Dexmedetomidine for the Control of Post-Operative Pain in Thoracotomy Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Post-operative Pain",
        "Respiratory Depression"
      ],
      "interventions": [
        {
          "name": "Dexmedetomidine",
          "type": "DRUG"
        },
        {
          "name": "Placebo (Normal Saline)",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Baylor Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 38,
      "start_date": "2008-05",
      "completion_date": "2010-01",
      "has_results": true,
      "last_update_posted_date": "2016-02-08",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00345384"
    },
    {
      "nct_id": "NCT05743855",
      "title": "The Effect of Chiropractic Plus Nutritional Supplement in Patients With Chronic Pain and Inflammation.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Pain",
        "Inflammatory Response"
      ],
      "interventions": [
        {
          "name": "Nutritional Supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Standard Process Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 25,
      "start_date": "2019-03-28",
      "completion_date": "2022-04-01",
      "has_results": false,
      "last_update_posted_date": "2023-03-31",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 3,
      "location_summary": "Charlotte, North Carolina • Kannapolis, North Carolina • Mooresville, North Carolina",
      "locations": [
        {
          "city": "Charlotte",
          "state": "North Carolina"
        },
        {
          "city": "Kannapolis",
          "state": "North Carolina"
        },
        {
          "city": "Mooresville",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05743855"
    },
    {
      "nct_id": "NCT06503978",
      "title": "Microbiota Transplant Therapy for Children With Both Autism Spectrum Disorder and Gastrointestinal Disorders",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Autism Spectrum Disorder",
        "Gastro-Intestinal Disorder",
        "Constipation",
        "Diarrhea"
      ],
      "interventions": [
        {
          "name": "MTP-101P",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Vancomycin",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Miralax",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Antacid",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Placebo MTP-101P",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Placebo Vancomycin",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "Gut-Brain-Axis Therapeutics Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "18 Years",
        "sex": "ALL",
        "summary": "4 Years to 18 Years"
      },
      "enrollment_count": 60,
      "start_date": "2024-08-20",
      "completion_date": "2026-08-17",
      "has_results": false,
      "last_update_posted_date": "2024-09-25",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 1,
      "location_summary": "Tempe, Arizona",
      "locations": [
        {
          "city": "Tempe",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06503978"
    },
    {
      "nct_id": "NCT06045078",
      "title": "Aromatherapy in Total Knee Replacement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Total Knee Replacement",
        "Post-operative Nausea and Vomiting",
        "Opioid Use",
        "Anxiety",
        "Depression",
        "Post Operative Pain"
      ],
      "interventions": [
        {
          "name": "Elequil Lavender-peppermint Aromatabs",
          "type": "OTHER"
        },
        {
          "name": "Elequil Almond-Oil Aromatabs",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 30,
      "start_date": "2023-10-03",
      "completion_date": "2024-04-01",
      "has_results": false,
      "last_update_posted_date": "2025-01-27",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06045078"
    },
    {
      "nct_id": "NCT00244478",
      "title": "Soy, Bone and Health in College Females",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Osteoporosis",
        "Obesity"
      ],
      "interventions": [
        {
          "name": "Soy Protein Dietary Supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Georgia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "19 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 19 Years · Female only"
      },
      "enrollment_count": 120,
      "start_date": "2005-10",
      "completion_date": "2006-03",
      "has_results": false,
      "last_update_posted_date": "2015-09-25",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 1,
      "location_summary": "Athens, Georgia",
      "locations": [
        {
          "city": "Athens",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00244478"
    },
    {
      "nct_id": "NCT06039189",
      "title": "Study of Guselkumab Versus Placebo for the Treatment of Low Body Surface Area Moderate Plaque Psoriasis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Moderate Plaque Psoriasis"
      ],
      "interventions": [
        {
          "name": "Guselkumab",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Janssen Research & Development, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 338,
      "start_date": "2023-08-24",
      "completion_date": "2025-04-14",
      "has_results": true,
      "last_update_posted_date": "2026-05-01",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 45,
      "location_summary": "Birmingham, Alabama • Encinitas, California • Fountain Valley, California + 34 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Encinitas",
          "state": "California"
        },
        {
          "city": "Fountain Valley",
          "state": "California"
        },
        {
          "city": "Riverside",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06039189"
    },
    {
      "nct_id": "NCT00547014",
      "title": "First Safety Study in Humans of a Single Dose of CPG 52364",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Placebo Comparator: Cohort 1 Placebo",
          "type": "DRUG"
        },
        {
          "name": "52364 3 mg",
          "type": "DRUG"
        },
        {
          "name": "Placebo Comparator: Cohorts 2, 3, 4 & 5 Two subjects each arm will be assigned to receive placebo",
          "type": "DRUG"
        },
        {
          "name": "52364 10 mg",
          "type": "DRUG"
        },
        {
          "name": "52364 30 mg",
          "type": "DRUG"
        },
        {
          "name": "52364 100 mg",
          "type": "DRUG"
        },
        {
          "name": "52364 1 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Pfizer",
      "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": 61,
      "start_date": "2007-09",
      "completion_date": "2008-04",
      "has_results": false,
      "last_update_posted_date": "2009-03-19",
      "last_synced_at": "2026-09-04T13:15:43.626Z",
      "location_count": 1,
      "location_summary": "Overland Park, Kansas",
      "locations": [
        {
          "city": "Overland Park",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00547014"
    }
  ]
}