{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+A&page=2",
    "query": {
      "intervention": "Vitamin A",
      "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=Vitamin+A&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-27T20:23:39.472Z",
  "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": "NCT00995917",
      "title": "A Pilot Study of Acupoint Injection for Primary Dysmenorrhea",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Dysmenorrhea",
        "Pain, Menstrual"
      ],
      "interventions": [
        {
          "name": "Vitamin K acupoint injection",
          "type": "OTHER"
        },
        {
          "name": "Saline Injection",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "25 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 25 Years · Female only"
      },
      "enrollment_count": 18,
      "start_date": "2009-10",
      "completion_date": "2011-07",
      "has_results": false,
      "last_update_posted_date": "2012-04-20",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00995917"
    },
    {
      "nct_id": "NCT01205880",
      "title": "Study to Evaluate Vectical in Combination With Clobex Spray to Treatment Plaque Psoriasis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Psoriasis"
      ],
      "interventions": [
        {
          "name": "Calcitriol ointment",
          "type": "DRUG"
        },
        {
          "name": "Clobetasol spray",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Emer, Jason, M.D.",
      "sponsor_class": "INDIV",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2009-12",
      "completion_date": "2010-01",
      "has_results": false,
      "last_update_posted_date": "2010-09-21",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01205880"
    },
    {
      "nct_id": "NCT04147624",
      "title": "Reducing the Effects of Aging on Cognition With Therapeutic Intervention of an Oral Nutrient (REACTION): A Pilot Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cognitive Decline"
      ],
      "interventions": [
        {
          "name": "Souvenaid",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "55 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "55 Years to 89 Years"
      },
      "enrollment_count": 67,
      "start_date": "2021-06-04",
      "completion_date": "2022-12-02",
      "has_results": false,
      "last_update_posted_date": "2023-01-25",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04147624"
    },
    {
      "nct_id": "NCT03061474",
      "title": "Nicotinamide as an Early Alzheimer's Disease Treatment",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Alzheimer's Disease",
        "Mild Cognitive Impairment"
      ],
      "interventions": [
        {
          "name": "Nicotinamide",
          "type": "DRUG"
        },
        {
          "name": "Placebo Comparator",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2017-07-12",
      "completion_date": "2022-08-30",
      "has_results": true,
      "last_update_posted_date": "2023-10-17",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 2,
      "location_summary": "Irvine, California • Los Angeles, California",
      "locations": [
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03061474"
    },
    {
      "nct_id": "NCT07006714",
      "title": "Preoperative Correction of Vitamin D Deficiency in Total Joint Arthroplasty (TJA)",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Osteoarthritis",
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Vitamin D3",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "96 Years",
        "sex": "ALL",
        "summary": "18 Years to 96 Years"
      },
      "enrollment_count": 200,
      "start_date": "2025-09-08",
      "completion_date": "2027-07-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-23",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 1,
      "location_summary": "Miami, Florida",
      "locations": [
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07006714"
    },
    {
      "nct_id": "NCT01990092",
      "title": "The Nutritional Benefits of Metanx in Patients With Diabetic Peripheral Neuropathy (MEDIAN)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Diabetic Peripheral Neuropathy",
        "B Vitamin Deficiency"
      ],
      "interventions": [
        {
          "name": "Metanx",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Pamlab, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": "80 Years",
        "sex": "ALL",
        "summary": "25 Years to 80 Years"
      },
      "enrollment_count": 238,
      "start_date": "2013-11",
      "completion_date": "2018-03",
      "has_results": false,
      "last_update_posted_date": "2016-01-18",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 25,
      "location_summary": "Mobile, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 21 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Long Beach",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01990092"
    },
    {
      "nct_id": "NCT03424746",
      "title": "Chelation Therapy in Diabetic Patients With Critical Limb Ischemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Critical Limb Ischemia",
        "Peripheral Arterial Disease"
      ],
      "interventions": [
        {
          "name": "disodium EDTA",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mt. Sinai Medical Center, Miami",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "50 Years and older"
      },
      "enrollment_count": 11,
      "start_date": "2015-08",
      "completion_date": "2019-02-18",
      "has_results": false,
      "last_update_posted_date": "2019-06-10",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 1,
      "location_summary": "Miami Beach, Florida",
      "locations": [
        {
          "city": "Miami Beach",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03424746"
    },
    {
      "nct_id": "NCT01141972",
      "title": "The Role of Vitamin D in Menopause: Relationship to Menopausal Symptoms in Body Composition",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Hot Flushes",
        "Menopause, Premature",
        "Obesity",
        "Vitamin D Deficiency"
      ],
      "interventions": [
        {
          "name": "Vitamin D",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Kaiser Permanente",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "60 Years",
        "sex": "FEMALE",
        "summary": "40 Years to 60 Years · Female only"
      },
      "enrollment_count": 23,
      "start_date": "2010-09",
      "completion_date": "2012-02",
      "has_results": false,
      "last_update_posted_date": "2013-05-30",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01141972"
    },
    {
      "nct_id": "NCT02626299",
      "title": "Assessment of DHA On Reducing Early Preterm Birth",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Preterm Birth"
      ],
      "interventions": [
        {
          "name": "Docosahexaenoic acid - 800mg/day",
          "type": "DRUG"
        },
        {
          "name": "Docosahexaenoic acid - 200mg/day",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Kansas Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 1100,
      "start_date": "2016-06-08",
      "completion_date": "2020-10-05",
      "has_results": false,
      "last_update_posted_date": "2021-03-30",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 3,
      "location_summary": "Kansas City, Kansas • Cincinnati, Ohio • Columbus, Ohio",
      "locations": [
        {
          "city": "Kansas City",
          "state": "Kansas"
        },
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02626299"
    },
    {
      "nct_id": "NCT06316700",
      "title": "A Pharmacokinetic Study of a Novel Nutritional Product on Healthy Men and Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Healthy Aging"
      ],
      "interventions": [
        {
          "name": "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": "45 Years",
        "sex": "ALL",
        "summary": "18 Years to 45 Years"
      },
      "enrollment_count": 16,
      "start_date": "2024-04-01",
      "completion_date": "2024-10-01",
      "has_results": false,
      "last_update_posted_date": "2025-05-04",
      "last_synced_at": "2026-09-27T20:23:39.472Z",
      "location_count": 1,
      "location_summary": "Canfield, Ohio",
      "locations": [
        {
          "city": "Canfield",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06316700"
    }
  ]
}