{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+-+ascorbic+acid&page=2",
    "query": {
      "intervention": "Placebo - ascorbic acid",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Placebo+-+ascorbic+acid&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-19T12:36:27.375Z",
  "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": "NCT02053506",
      "title": "Nutrition Interventions to Support the Immune System in Response to Stress",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Mitigation of Immune Function Decrements in Response to Stress"
      ],
      "interventions": [
        {
          "name": "Immune-enhancing nutritional beverage",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Probiotics (BB-12)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo (for nutritional beverage and probiotic)",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "United States Army Research Institute of Environmental Medicine",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 63,
      "start_date": "2014-01",
      "completion_date": "2016-12",
      "has_results": false,
      "last_update_posted_date": "2017-05-02",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 1,
      "location_summary": "Natick, Massachusetts",
      "locations": [
        {
          "city": "Natick",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02053506"
    },
    {
      "nct_id": "NCT03509350",
      "title": "Vitamin C, Thiamine, and Steroids in Sepsis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Sepsis"
      ],
      "interventions": [
        {
          "name": "Vitamin C",
          "type": "DRUG"
        },
        {
          "name": "Thiamine",
          "type": "DRUG"
        },
        {
          "name": "Hydrocortisone",
          "type": "DRUG"
        },
        {
          "name": "Vitamin C Placebo",
          "type": "DRUG"
        },
        {
          "name": "Thiamine Placebo",
          "type": "DRUG"
        },
        {
          "name": "Hydrocortisone Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 501,
      "start_date": "2018-08-22",
      "completion_date": "2020-01-29",
      "has_results": true,
      "last_update_posted_date": "2021-04-13",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 43,
      "location_summary": "Phoenix, Arizona • Tucson, Arizona • Los Angeles, California + 30 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03509350"
    },
    {
      "nct_id": "NCT00974025",
      "title": "Impact of Vitamin C on Endothelial Function and Exercise Capacity in Fontan-Palliated Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Fontan Procedure",
        "Hypoplastic Left Heart Syndrome",
        "Tricuspid Atresia"
      ],
      "interventions": [
        {
          "name": "Vitamin C",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "8 Years",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "8 Years to 25 Years"
      },
      "enrollment_count": 53,
      "start_date": "2009-06",
      "completion_date": "2010-03",
      "has_results": false,
      "last_update_posted_date": "2017-06-01",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00974025"
    },
    {
      "nct_id": "NCT02115724",
      "title": "Nitric Oxide Bioavailability and Early Life Stress (NO-Stress)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Cardiovascular Disease"
      ],
      "interventions": [
        {
          "name": "Antioxidant cocktail",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Biopsy",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "NMD; 0.4mg sub-lingual nitroglycerin spray",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Augusta University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 74,
      "start_date": "2014-04",
      "completion_date": "2027-01",
      "has_results": false,
      "last_update_posted_date": "2025-01-28",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 1,
      "location_summary": "Augusta, Georgia",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02115724"
    },
    {
      "nct_id": "NCT04036110",
      "title": "Vitamin C Supplementation Intervention",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Heart Failure"
      ],
      "interventions": [
        {
          "name": "Vitamin C 500 mg",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin C 1000 mg",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University of North Carolina, Chapel Hill",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 36,
      "start_date": "2018-08-14",
      "completion_date": "2020-06-16",
      "has_results": true,
      "last_update_posted_date": "2021-03-09",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 1,
      "location_summary": "Chapel Hill, North Carolina",
      "locations": [
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04036110"
    },
    {
      "nct_id": "NCT05908825",
      "title": "Placebo-Controlled Study Assessing the Use of a Novel Exfoliative Serum With A Chemical Peel to Improve Photodamage in Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Photodamaged Skin"
      ],
      "interventions": [
        {
          "name": "Vitamin C with AHA Exfoliative Serum",
          "type": "DRUG"
        },
        {
          "name": "Placebo serum",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Austin Institute for Clinical Research",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "30 Years to 65 Years · Female only"
      },
      "enrollment_count": 34,
      "start_date": "2023-06-22",
      "completion_date": "2024-01-26",
      "has_results": false,
      "last_update_posted_date": "2024-07-19",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 1,
      "location_summary": "Pflugerville, Texas",
      "locations": [
        {
          "city": "Pflugerville",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05908825"
    },
    {
      "nct_id": "NCT00654108",
      "title": "Safety and Immunogenicity of Peru-15-pCTB in Healthy Adult Subjects",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Gastroenteritis Escherichia Coli"
      ],
      "interventions": [
        {
          "name": "Ciprofloxacin",
          "type": "DRUG"
        },
        {
          "name": "Peru-15-pCTB",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Sodium bicarbonate/Ascorbic Acid/Aspartame Buffer",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL",
        "OTHER"
      ],
      "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 62,
      "start_date": "2008-06-02",
      "completion_date": "2010-12-31",
      "has_results": false,
      "last_update_posted_date": "2021-07-29",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00654108"
    },
    {
      "nct_id": "NCT04354428",
      "title": "Treatment for COVID-19 in High-Risk Adult Outpatients",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "COVID-19",
        "SARS-CoV-2"
      ],
      "interventions": [
        {
          "name": "Ascorbic Acid",
          "type": "DRUG"
        },
        {
          "name": "Hydroxychloroquine Sulfate",
          "type": "DRUG"
        },
        {
          "name": "Azithromycin",
          "type": "DRUG"
        },
        {
          "name": "Folic Acid",
          "type": "DRUG"
        },
        {
          "name": "Lopinavir 200 MG / Ritonavir 50 MG [Kaletra]",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "18 Years to 80 Years"
      },
      "enrollment_count": 289,
      "start_date": "2020-04-16",
      "completion_date": "2020-11-30",
      "has_results": true,
      "last_update_posted_date": "2022-08-08",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 6,
      "location_summary": "Chicago, Illinois • New Orleans, Louisiana • Boston, Massachusetts + 2 more",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "New Orleans",
          "state": "Louisiana"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Syracuse",
          "state": "New York"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04354428"
    },
    {
      "nct_id": "NCT02827747",
      "title": "The Role of Antioxidant Supplementation in Keratoconus Patients",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Keratoconus"
      ],
      "interventions": [
        {
          "name": "Antioxidants (Vitamins A,C,E) plus GSH",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Centrum",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Dietary Sources",
          "type": "COMBINATION_PRODUCT"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DIETARY_SUPPLEMENT",
        "COMBINATION_PRODUCT"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 0,
      "start_date": "2021-08-01",
      "completion_date": "2023-03",
      "has_results": false,
      "last_update_posted_date": "2021-08-16",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 1,
      "location_summary": "Palm Beach Gardens, Florida",
      "locations": [
        {
          "city": "Palm Beach Gardens",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02827747"
    },
    {
      "nct_id": "NCT04514510",
      "title": "Fixed Dose Flavonoid Isoquercetin on Thrombo-Inflammatory Biomarkers in Subjects With Stable Sickle Cell Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Sickle Cell Disease"
      ],
      "interventions": [
        {
          "name": "Isoquercetin",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 46,
      "start_date": "2020-11-02",
      "completion_date": "2022-07-07",
      "has_results": true,
      "last_update_posted_date": "2024-01-02",
      "last_synced_at": "2026-09-19T12:36:27.375Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04514510"
    }
  ]
}