{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=ascorbic+acid+%28Vitamin+C%29&page=7",
    "query": {
      "intervention": "ascorbic acid (Vitamin C)",
      "page": 7
    },
    "page_size": 10
  },
  "pagination": {
    "page": 7,
    "page_size": 10,
    "total_count": 367,
    "total_pages": 37,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=ascorbic+acid+%28Vitamin+C%29&page=8&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=ascorbic+acid+%28Vitamin+C%29&page=6&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-09T09:46:23.433Z",
  "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": "NCT06313502",
      "title": "High Dose Ascorbic Acid (HDAA) in Patients With Plasma Cell Disorders",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Plasma Cell Disorder"
      ],
      "interventions": [
        {
          "name": "75gm HDAA",
          "type": "DRUG"
        },
        {
          "name": "100gm HDAA",
          "type": "DRUG"
        },
        {
          "name": "125gm HDAA",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Arkansas",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 18,
      "start_date": "2024-07-19",
      "completion_date": "2028-04",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 1,
      "location_summary": "Little Rock, Arkansas",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06313502"
    },
    {
      "nct_id": "NCT03289481",
      "title": "Treatment of HFpEF With Nitrate Supplement",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Heart Failure With Normal Ejection Fraction"
      ],
      "interventions": [
        {
          "name": "Active lozenge",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "sponsor": "MaineHealth",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2017-06-29",
      "completion_date": "2018-08-22",
      "has_results": true,
      "last_update_posted_date": "2021-10-06",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 1,
      "location_summary": "Rockport, Maine",
      "locations": [
        {
          "city": "Rockport",
          "state": "Maine"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03289481"
    },
    {
      "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": "2026-10-09T09:46:23.433Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07715669"
    },
    {
      "nct_id": "NCT00845130",
      "title": "Quantitative in Vivo Biomarkers of Oxidative Stress in Diabetes",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Type 2 Diabetes",
        "Oxidative Stress"
      ],
      "interventions": [
        {
          "name": "ascorbic acid (Vitamin C)",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "In-Young Choi, Ph.D.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "30 Years to 55 Years"
      },
      "enrollment_count": 42,
      "start_date": "2009-09",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2018-05-03",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 1,
      "location_summary": "Kansas City, Kansas",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00845130"
    },
    {
      "nct_id": "NCT04551339",
      "title": "Zinc Versus Multivitamin Micronutrient Supplementation in the Setting of COVID-19",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy",
        "Health Care Worker Patient Transmission",
        "Aging"
      ],
      "interventions": [
        {
          "name": "PreserVision AREDS formulation soft gels or tablets",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Multivitamin with 11mg of zinc",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 2700,
      "start_date": "2020-09-28",
      "completion_date": "2021-05-28",
      "has_results": false,
      "last_update_posted_date": "2021-08-10",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 3,
      "location_summary": "Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04551339"
    },
    {
      "nct_id": "NCT01897792",
      "title": "Effect of Antioxidant Vitamins on Coagulopathy and Nosocomial Pneumonia After Severe Trauma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Coagulopathy",
        "Nosocomial Pneumonia"
      ],
      "interventions": [
        {
          "name": "Vitamin C",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Vitamin E",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Saline (for Vitamin C)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo (for Vitamin E)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "DRUG"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 11,
      "start_date": "2013-05",
      "completion_date": "2015-02",
      "has_results": true,
      "last_update_posted_date": "2017-03-29",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01897792"
    },
    {
      "nct_id": "NCT05332717",
      "title": "TKA Melatonin and Sleep Quality",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Arthroplasty",
        "Replacement",
        "Knee",
        "Sleep Initiation and Maintenance Disorders"
      ],
      "interventions": [
        {
          "name": "Melatonin 5 mg",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo (Vitamin C)",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Hospital for Special Surgery, New York",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 176,
      "start_date": "2022-01-10",
      "completion_date": "2022-04-30",
      "has_results": false,
      "last_update_posted_date": "2023-09-14",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05332717"
    },
    {
      "nct_id": "NCT03613727",
      "title": "Therapeutic Use of Intravenous Vitamin C in Allogeneic Stem Cell Transplant Recipients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Lymphoid Leukemia",
        "Myeloid Leukemia",
        "Monocytic Leukemia",
        "Myelodysplasia"
      ],
      "interventions": [
        {
          "name": "Intravenous (IV) and oral Vitamin C",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "77 Years",
        "sex": "ALL",
        "summary": "18 Years to 77 Years"
      },
      "enrollment_count": 61,
      "start_date": "2018-10-01",
      "completion_date": "2022-10-06",
      "has_results": true,
      "last_update_posted_date": "2023-11-07",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03613727"
    },
    {
      "nct_id": "NCT00484510",
      "title": "High Dose Ascorbic Acid Treatment of CMT1A",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Charcot-Marie-Tooth Disease, Type Ia"
      ],
      "interventions": [
        {
          "name": "Ascorbic acid (Vitamin C)",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Wayne State University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "13 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "13 Years to 70 Years"
      },
      "enrollment_count": 110,
      "start_date": "2007-04",
      "completion_date": "2012-12",
      "has_results": false,
      "last_update_posted_date": "2013-03-06",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 3,
      "location_summary": "Baltimore, Maryland • Detroit, Michigan • Rochester, New York",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Rochester",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00484510"
    },
    {
      "nct_id": "NCT01152073",
      "title": "A Study Of Nutraceutical Drinks For Cholesterol (Evaluating Effectiveness and Tolerability)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hyperlipidemia"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Second Formulation",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Third Formulation",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Healthy Drink Discoveries, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "20 Years to 80 Years"
      },
      "enrollment_count": 79,
      "start_date": "2009-10",
      "completion_date": "2010-09",
      "has_results": false,
      "last_update_posted_date": "2012-03-16",
      "last_synced_at": "2026-10-09T09:46:23.433Z",
      "location_count": 1,
      "location_summary": "Boca Raton, Florida",
      "locations": [
        {
          "city": "Boca Raton",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01152073"
    }
  ]
}