{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=OTC+multivitamin",
    "query": {
      "intervention": "OTC multivitamin"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 6,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-06T22:44:24.116Z",
  "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": "NCT02245321",
      "title": "Strategies to Reduce Iron Deficiency",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Iron Deficiency"
      ],
      "interventions": [
        {
          "name": "Ferrous gluconate- 19 mg",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Ferrous gluconate- 38 mg",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Letter Group- Information Provided",
          "type": "OTHER"
        },
        {
          "name": "Letter - No Information Provided",
          "type": "OTHER"
        },
        {
          "name": "Placebo",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Westat",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 702,
      "start_date": "2011-06",
      "completion_date": "2014-06",
      "has_results": false,
      "last_update_posted_date": "2023-12-06",
      "last_synced_at": "2026-09-06T22:44:24.116Z",
      "location_count": 4,
      "location_summary": "Farmington, Connecticut • Rockville, Maryland • Pittsburgh, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        },
        {
          "city": "Rockville",
          "state": "Maryland"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02245321"
    },
    {
      "nct_id": "NCT03582722",
      "title": "Weight Loss Aid in an Exposed Population",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Polybrominated Biphenyl Poisoning"
      ],
      "interventions": [
        {
          "name": "Orlistat",
          "type": "DRUG"
        },
        {
          "name": "Placebo capsule",
          "type": "DRUG"
        },
        {
          "name": "Multivitamin",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "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": 100,
      "start_date": "2018-09-14",
      "completion_date": "2022-06-30",
      "has_results": true,
      "last_update_posted_date": "2024-04-25",
      "last_synced_at": "2026-09-06T22:44:24.116Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03582722"
    },
    {
      "nct_id": "NCT02124642",
      "title": "Folic Acid Supplementation in Pregnant Women: Dose Response",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "Folic acid, 400 mcg/day",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Folic acid 800 mcg/day",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of Georgia",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "40 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 40 Years · Female only"
      },
      "enrollment_count": 51,
      "start_date": "2014-05",
      "completion_date": "2017-12",
      "has_results": false,
      "last_update_posted_date": "2018-03-05",
      "last_synced_at": "2026-09-06T22:44:24.116Z",
      "location_count": 1,
      "location_summary": "Athens, Georgia",
      "locations": [
        {
          "city": "Athens",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02124642"
    },
    {
      "nct_id": "NCT01954498",
      "title": "Effect of Walnuts on Sperm Parameters and Male Fertility",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Oligozoospermia",
        "Asthenozoospermia",
        "Teratozoospermia",
        "Fertility"
      ],
      "interventions": [
        {
          "name": "Walnuts",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "OTC multivitamin",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "21 Years and older · Male only"
      },
      "enrollment_count": 80,
      "start_date": "2014-05",
      "completion_date": "2020-03",
      "has_results": false,
      "last_update_posted_date": "2026-03-13",
      "last_synced_at": "2026-09-06T22:44:24.116Z",
      "location_count": 2,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01954498"
    },
    {
      "nct_id": "NCT02050451",
      "title": "Perioperative Oral Nutrition Intervention for Patients Undergoing Radical Cystectomy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bladder Cancer"
      ],
      "interventions": [
        {
          "name": "Ensure Plus®",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Multivitamin",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Vanderbilt University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 60,
      "start_date": "2014-03",
      "completion_date": "2017-03",
      "has_results": false,
      "last_update_posted_date": "2017-03-29",
      "last_synced_at": "2026-09-06T22:44:24.116Z",
      "location_count": 1,
      "location_summary": "Nashville, Tennessee",
      "locations": [
        {
          "city": "Nashville",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02050451"
    },
    {
      "nct_id": "NCT05971173",
      "title": "Nutritional Optimization and Bone Health Management for Older Adults Undergoing Hip Fracture Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Hip Fractures"
      ],
      "interventions": [
        {
          "name": "Juven",
          "type": "DRUG"
        },
        {
          "name": "Centrum Silver 50+",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Health Science Center at San Antonio",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "65 Years to 89 Years"
      },
      "enrollment_count": 40,
      "start_date": "2023-09-28",
      "completion_date": "2025-06-04",
      "has_results": false,
      "last_update_posted_date": "2026-07-23",
      "last_synced_at": "2026-09-06T22:44:24.116Z",
      "location_count": 2,
      "location_summary": "San Antonio, Texas",
      "locations": [
        {
          "city": "San Antonio",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05971173"
    }
  ]
}