{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ascorbic+Acid+%28Vitamin+C%29&page=13",
    "query": {
      "intervention": "Ascorbic Acid (Vitamin C)",
      "page": 13
    },
    "page_size": 10
  },
  "pagination": {
    "page": 13,
    "page_size": 10,
    "total_count": 368,
    "total_pages": 37,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ascorbic+Acid+%28Vitamin+C%29&page=14&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ascorbic+Acid+%28Vitamin+C%29&page=12&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-14T01:13:35.242Z",
  "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": "NCT00067899",
      "title": "Oxidative Stress and Vitamin E Requirements",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Smoking"
      ],
      "interventions": [
        {
          "name": "Vitamin E with and without Vitamin C",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "ALL",
        "summary": "18 Years to 35 Years"
      },
      "enrollment_count": 99,
      "start_date": "2000-09",
      "completion_date": "2005-12",
      "has_results": false,
      "last_update_posted_date": "2013-06-19",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 1,
      "location_summary": "Corvallis, Oregon",
      "locations": [
        {
          "city": "Corvallis",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00067899"
    },
    {
      "nct_id": "NCT03541486",
      "title": "A Clinical Trial Evaluating the Effect of Pharmacological Ascorbate on Radiation Therapy for Pancreatic Cancer Patients",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pancreatic Neoplasm"
      ],
      "interventions": [
        {
          "name": "Ascorbate",
          "type": "DRUG"
        },
        {
          "name": "Gemcitabine",
          "type": "DRUG"
        },
        {
          "name": "radiation therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "Joseph J. Cullen, MD, FACS",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2025-12-31",
      "completion_date": "2030-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-03-10",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03541486"
    },
    {
      "nct_id": "NCT00362518",
      "title": "Vitamins C and Vitamin E and Cardiovascular Risk",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Diabetes"
      ],
      "interventions": [
        {
          "name": "Study Arm A",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Study Arm B",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Study Arm C",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Study Arm D",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of New Mexico",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 12,
      "start_date": "2004-07",
      "completion_date": "2008-03",
      "has_results": false,
      "last_update_posted_date": "2024-03-12",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 1,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00362518"
    },
    {
      "nct_id": "NCT06861088",
      "title": "The Effect of Kinisoquin™ on Thromboembolic Events in Patients With Metastatic or Locally Advanced Pancreatic Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Venous Thromboembolism",
        "Metastatic Pancreatic Cancer",
        "Locally Advanced Pancreatic Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Kinisoquin™",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Quercis Pharma AG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 480,
      "start_date": "2025-12-19",
      "completion_date": "2029-10-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-02",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 3,
      "location_summary": "Ventura, California • Miami Lakes, Florida • Boston, Massachusetts",
      "locations": [
        {
          "city": "Ventura",
          "state": "California"
        },
        {
          "city": "Miami Lakes",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06861088"
    },
    {
      "nct_id": "NCT07715669",
      "title": "Antidepressant Therapy for Improved Blood Vessel Health After Preeclampsia",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Preeclampsia",
        "Endothelial Function"
      ],
      "interventions": [
        {
          "name": "Paroxetine Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Ascorbic acid (Vitamin C)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Anna Stanhewicz, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "45 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 45 Years · Female only"
      },
      "enrollment_count": 40,
      "start_date": "2026-08-30",
      "completion_date": "2027-06",
      "has_results": false,
      "last_update_posted_date": "2026-07-29",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07715669"
    },
    {
      "nct_id": "NCT00985361",
      "title": "Effect of Vitamin D Supplementation on Hemoglobin A1c in Patients With Uncontrolled Type 2 Diabetes Mellitus",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 2 Diabetes Mellitus"
      ],
      "interventions": [
        {
          "name": "Vitamin D3 2000 international units daily",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin C 500mg daily",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "ProMedica Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "21 Years to 75 Years"
      },
      "enrollment_count": 37,
      "start_date": "2009-10",
      "completion_date": "2010-03",
      "has_results": false,
      "last_update_posted_date": "2010-05-06",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 3,
      "location_summary": "Sylvania, Ohio • Toledo, Ohio",
      "locations": [
        {
          "city": "Sylvania",
          "state": "Ohio"
        },
        {
          "city": "Toledo",
          "state": "Ohio"
        },
        {
          "city": "Toledo",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00985361"
    },
    {
      "nct_id": "NCT07513597",
      "title": "Assessment of the Effects of a Daily Supplement 4Life Transfer Factor Vista Containing AREDS2 Formula on Skin Carotenoid Levels Using a Non-invasive Detection",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Skin Carotenoids"
      ],
      "interventions": [
        {
          "name": "Dietary Supplement",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "4Life Research, LLC",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 24,
      "start_date": "2025-10-16",
      "completion_date": "2026-02-14",
      "has_results": false,
      "last_update_posted_date": "2026-04-07",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 1,
      "location_summary": "Sandy City, Utah",
      "locations": [
        {
          "city": "Sandy City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07513597"
    },
    {
      "nct_id": "NCT06125912",
      "title": "A Comparative Split-Face Study of the Effects of a Retinol Alternative Cream on Improving Facial Skin Aging",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Skin Aging"
      ],
      "interventions": [
        {
          "name": "Dime Beauty TBT Cream",
          "type": "OTHER"
        },
        {
          "name": "Positive Control",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Dime Beauty Co.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 65 Years · Female only"
      },
      "enrollment_count": 35,
      "start_date": "2023-09-25",
      "completion_date": "2024-02-15",
      "has_results": false,
      "last_update_posted_date": "2024-02-22",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 1,
      "location_summary": "Santa Monica, California",
      "locations": [
        {
          "city": "Santa Monica",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06125912"
    },
    {
      "nct_id": "NCT03410030",
      "title": "Trial of Ascorbic Acid (AA) + Nanoparticle Paclitaxel Protein Bound + Cisplatin + Gemcitabine (AA NABPLAGEM)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Pancreatic Cancer",
        "Pancreas Cancer",
        "Pancreatic Adenocarcinoma Resectable",
        "Pancreatic Ductal Adenocarcinoma",
        "Pancreas Metastases"
      ],
      "interventions": [
        {
          "name": "High Dose Ascorbic Acid 25 g/m^2",
          "type": "DRUG"
        },
        {
          "name": "Nanoparticle Paclitaxel protein bound 125mg/m^2",
          "type": "DRUG"
        },
        {
          "name": "Cisplatin 25mg/m^2",
          "type": "DRUG"
        },
        {
          "name": "Gemcitabine 1000mg/m^2",
          "type": "DRUG"
        },
        {
          "name": "High Dose Ascorbic Acid 37.5 g/m^2",
          "type": "DRUG"
        },
        {
          "name": "High Dose Ascorbic Acid 56.25 g/m^2",
          "type": "DRUG"
        },
        {
          "name": "High Dose Ascorbic Acid 75 g/m^2",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "HonorHealth Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 17,
      "start_date": "2017-12-15",
      "completion_date": "2023-09-06",
      "has_results": true,
      "last_update_posted_date": "2026-07-23",
      "last_synced_at": "2026-10-14T01:13:35.242Z",
      "location_count": 1,
      "location_summary": "Scottsdale, Arizona",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03410030"
    },
    {
      "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": "2026-10-14T01:13:35.242Z",
      "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"
    }
  ]
}