{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dietary+Supplement%2FVitamins&page=3",
    "query": {
      "intervention": "Dietary Supplement/Vitamins",
      "page": 3
    },
    "page_size": 10
  },
  "pagination": {
    "page": 3,
    "page_size": 10,
    "total_count": 374,
    "total_pages": 38,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dietary+Supplement%2FVitamins&page=4&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Dietary+Supplement%2FVitamins&page=2&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-05T05:37:19.133Z",
  "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": "NCT01672710",
      "title": "Gulf War Illness: Evaluation of an Innovative Detoxification Program",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Gulf War Illness"
      ],
      "interventions": [
        {
          "name": "plain crystalline niacin, exercise, sauna",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University at Albany",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 32,
      "start_date": "2010-04",
      "completion_date": "2015-12",
      "has_results": true,
      "last_update_posted_date": "2020-04-13",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "location_count": 1,
      "location_summary": "Annapolis, Maryland",
      "locations": [
        {
          "city": "Annapolis",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01672710"
    },
    {
      "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": "2026-10-05T05:37:19.133Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00882505"
    },
    {
      "nct_id": "NCT05427279",
      "title": "Effects of Vitamin C Enriched Hydrolyzed Collagen, PrimaColl™, Whey Protein, or Placebo on Collagen Synthesis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Effect of Food Supplement"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Hydrolized Collagen",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "PrimaColl",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Whey protein",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of California, Davis",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "18 Years to 30 Years"
      },
      "enrollment_count": 20,
      "start_date": "2022-10-05",
      "completion_date": "2024-09-30",
      "has_results": false,
      "last_update_posted_date": "2026-05-08",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "location_count": 1,
      "location_summary": "Davis, California",
      "locations": [
        {
          "city": "Davis",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05427279"
    },
    {
      "nct_id": "NCT01690962",
      "title": "A Nutritional Intervention for Diabetic Neuropathy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetic Neuropathy"
      ],
      "interventions": [
        {
          "name": "Vegan diet and vitamin B12 supplement",
          "type": "OTHER"
        },
        {
          "name": "Vitamin B12 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": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 15,
      "start_date": "2012-11",
      "completion_date": "2014-02",
      "has_results": false,
      "last_update_posted_date": "2014-09-04",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "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/NCT01690962"
    },
    {
      "nct_id": "NCT06505239",
      "title": "Assessing the Safety and Efficacy of FSD-F2R6-A-CP in Volunteers in an Induced State of Alcohol Intoxication",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Acute Alcohol Intoxication"
      ],
      "interventions": [
        {
          "name": "FSD-F2R6-A-CP",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Quantum Biopharma",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": "45 Years",
        "sex": "ALL",
        "summary": "21 Years to 45 Years"
      },
      "enrollment_count": 26,
      "start_date": "2024-07-12",
      "completion_date": "2024-11-07",
      "has_results": false,
      "last_update_posted_date": "2025-05-22",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06505239"
    },
    {
      "nct_id": "NCT02366481",
      "title": "Vitamin K and Glucose Metabolism in Adults at Risk for Diabetes (Vita-K 'n' Adults Study)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Insulin Resistance",
        "Insulin Sensitivity",
        "Beta-Cell Dysfunction",
        "Prediabetes"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Low-Dose Vitamin K2 Supplement (menaquinone-7; 90-mcg/d)",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "High-Dose Vitamin K2 Supplement (menaquinone-7; 180-mcg/d)",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Augusta University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 30,
      "start_date": "2015-02",
      "completion_date": "2020-06-30",
      "has_results": false,
      "last_update_posted_date": "2019-11-20",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "location_count": 1,
      "location_summary": "Augusta, Georgia",
      "locations": [
        {
          "city": "Augusta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02366481"
    },
    {
      "nct_id": "NCT06967428",
      "title": "Effect of Metabolic Modulation on a Post-acute COVID-19 Vaccination Syndrome (PACVS) Cohort",
      "overall_status": "NOT_YET_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Vaccine Adverse Reaction",
        "Post Acute Covid-19 Vaccination Syndrome"
      ],
      "interventions": [
        {
          "name": "Combined metabolic modulator",
          "type": "COMBINATION_PRODUCT"
        },
        {
          "name": "Rice Protein Powder with Vitamin C",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "COMBINATION_PRODUCT",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Independent Medical Alliance",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "16 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-09-01",
      "completion_date": "2026-01",
      "has_results": false,
      "last_update_posted_date": "2025-05-13",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06967428"
    },
    {
      "nct_id": "NCT06521424",
      "title": "The Effects of a Novel Nutritional Product on Nutrient Gaps and Gut Health in Active Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Gastrointestinal Microbiome",
        "Nutrition, Healthy",
        "Exercise"
      ],
      "interventions": [
        {
          "name": "AG1 - Nutritional Supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Athletic Greens International",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 20,
      "start_date": "2024-08-01",
      "completion_date": "2024-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-05-04",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "location_count": 1,
      "location_summary": "Hempstead, New York",
      "locations": [
        {
          "city": "Hempstead",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06521424"
    },
    {
      "nct_id": "NCT05481450",
      "title": "Efficacy and Safety Safety of Nutritears® in Adults With Dry Eye Syndrome",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dry Eye",
        "Dry Eye Syndromes"
      ],
      "interventions": [
        {
          "name": "Blink NutriTears",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Applied Science & Performance Institute",
      "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": 131,
      "start_date": "2022-08-15",
      "completion_date": "2023-05-22",
      "has_results": false,
      "last_update_posted_date": "2026-06-04",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "location_count": 3,
      "location_summary": "Lutz, Florida • Tampa, Florida",
      "locations": [
        {
          "city": "Lutz",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05481450"
    },
    {
      "nct_id": "NCT05533658",
      "title": "The Effects of VisionPure™ on Indices of Vision Health and Cognitive Function",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Eye Health",
        "Vision",
        "Cognitive Function"
      ],
      "interventions": [
        {
          "name": "VisionPure Dietary Supplement",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Applied Science & Performance Institute",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "18 Years to 40 Years"
      },
      "enrollment_count": 15,
      "start_date": "2022-08-01",
      "completion_date": "2023-02-03",
      "has_results": false,
      "last_update_posted_date": "2023-05-26",
      "last_synced_at": "2026-10-05T05:37:19.133Z",
      "location_count": 3,
      "location_summary": "Lutz, Florida • Tampa, Florida",
      "locations": [
        {
          "city": "Lutz",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05533658"
    }
  ]
}