{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ferrous+Sulfate",
    "query": {
      "intervention": "Ferrous Sulfate"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 97,
    "total_pages": 10,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Ferrous+Sulfate&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-03T13:36:55.629Z",
  "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": "NCT01555060",
      "title": "Hemoglobin and Iron Recovery Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Recovery of Hemoglobin and Iron Stores After Blood Donation"
      ],
      "interventions": [
        {
          "name": "ferrous gluconate",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "National Heart, Lung, and Blood Institute (NHLBI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 215,
      "start_date": "2012-03",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2014-01-23",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 4,
      "location_summary": "San Francisco, California • Farmington, Connecticut • Pittsburgh, Pennsylvania + 1 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Farmington",
          "state": "Connecticut"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01555060"
    },
    {
      "nct_id": "NCT02404012",
      "title": "Iron Supplement to Improve Iron Status Following Bariatric Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Anemia, Iron Deficiency"
      ],
      "interventions": [
        {
          "name": "Oral iron supplementation",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 65 Years · Female only"
      },
      "enrollment_count": 64,
      "start_date": "2014-11",
      "completion_date": "2021-12-31",
      "has_results": false,
      "last_update_posted_date": "2022-08-05",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 1,
      "location_summary": "West Lafayette, Indiana",
      "locations": [
        {
          "city": "West Lafayette",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02404012"
    },
    {
      "nct_id": "NCT03991169",
      "title": "Oral Iron in Children With Chronic Kidney Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Chronic Kidney Insufficiency",
        "Chronic Kidney Diseases"
      ],
      "interventions": [
        {
          "name": "Ferrous Sulfate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Year to 21 Years"
      },
      "enrollment_count": 40,
      "start_date": "2019-04-19",
      "completion_date": "2028-12-31",
      "has_results": false,
      "last_update_posted_date": "2025-08-11",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 2,
      "location_summary": "New York, New York • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03991169"
    },
    {
      "nct_id": "NCT00395993",
      "title": "Comparison of the Safety and Efficacy of Intravenous Iron Versus Oral Iron in the Treatment of Anemia Secondary to Heavy Uterine Bleeding",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Anemia"
      ],
      "interventions": [
        {
          "name": "Ferric Carboxymaltose (FCM)",
          "type": "DRUG"
        },
        {
          "name": "Ferrous Sulfate tablets",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "American Regent, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 456,
      "start_date": "2005-05",
      "completion_date": "2006-06",
      "has_results": true,
      "last_update_posted_date": "2018-02-20",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 1,
      "location_summary": "Norristown, Pennsylvania",
      "locations": [
        {
          "city": "Norristown",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00395993"
    },
    {
      "nct_id": "NCT03523117",
      "title": "Multicenter Randomized Active-controlled Study to Investigate Efficacy & Safety of IV FCM in Pediatric Patients With IDA",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Iron Deficiency Anemia"
      ],
      "interventions": [
        {
          "name": "Ferric carboxymaltose",
          "type": "DRUG"
        },
        {
          "name": "Ferrous Sulfate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "American Regent, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "17 Years",
        "sex": "ALL",
        "summary": "1 Year to 17 Years"
      },
      "enrollment_count": 79,
      "start_date": "2019-01-31",
      "completion_date": "2021-01-29",
      "has_results": true,
      "last_update_posted_date": "2022-06-22",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 16,
      "location_summary": "Little Rock, Arkansas • Doral, Florida • Miami, Florida + 10 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Doral",
          "state": "Florida"
        },
        {
          "city": "Doral",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03523117"
    },
    {
      "nct_id": "NCT02499354",
      "title": "Pilot Study: Randomized, Placebo-controlled Comparator Trial of IV vs Oral Iron Treatment of RLS With IDA. (IVOR-IDA)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Restless Legs Syndrome",
        "Iron Deficiency Anemia"
      ],
      "interventions": [
        {
          "name": "Ferumoxytol intravenous",
          "type": "DRUG"
        },
        {
          "name": "Ferrous sulfate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Auerbach Hematology Oncology Associates P C",
      "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": "2014-08",
      "completion_date": "2022-05-31",
      "has_results": true,
      "last_update_posted_date": "2024-01-30",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02499354"
    },
    {
      "nct_id": "NCT05047211",
      "title": "Intravenous Iron vs. Oral Iron Supplementation for Postpartum Anemia",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Anemia, Iron Deficiency",
        "Delivery Complication"
      ],
      "interventions": [
        {
          "name": "Ferrous sulfate",
          "type": "DRUG"
        },
        {
          "name": "Iron dextran",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The University of Texas Medical Branch, Galveston",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 40,
      "start_date": "2021-10-07",
      "completion_date": "2023-04-15",
      "has_results": true,
      "last_update_posted_date": "2023-08-29",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 1,
      "location_summary": "Galveston, Texas",
      "locations": [
        {
          "city": "Galveston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05047211"
    },
    {
      "nct_id": "NCT03438227",
      "title": "Intravenous Iron for Iron-deficiency Anemia in Pregnancy: a Randomized Controlled Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Iron Deficiency Anemia of Pregnancy",
        "Iron Malabsorption"
      ],
      "interventions": [
        {
          "name": "Iron dextran",
          "type": "DRUG"
        },
        {
          "name": "Ferrous sulfate 325mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Indiana University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 38,
      "start_date": "2018-04-15",
      "completion_date": "2019-12-31",
      "has_results": true,
      "last_update_posted_date": "2024-06-11",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 2,
      "location_summary": "Indianapolis, Indiana • St Louis, Missouri",
      "locations": [
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03438227"
    },
    {
      "nct_id": "NCT00223938",
      "title": "Study of the Efficacy and Safety of Ferrlecit in the Maintenance Dosing in Hemodialysis Patients.",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Anemia"
      ],
      "interventions": [
        {
          "name": "Oral Iron",
          "type": "DRUG"
        },
        {
          "name": "sodium ferric gluconate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 112,
      "start_date": "2003-12-30",
      "completion_date": "2007-04-27",
      "has_results": false,
      "last_update_posted_date": "2021-06-24",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 8,
      "location_summary": "Hot Springs, Arkansas • Orange County, California • Simi Valley, California + 5 more",
      "locations": [
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        },
        {
          "city": "Orange County",
          "state": "California"
        },
        {
          "city": "Simi Valley",
          "state": "California"
        },
        {
          "city": "Pembroke Pines",
          "state": "Florida"
        },
        {
          "city": "Winston-Salem",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00223938"
    },
    {
      "nct_id": "NCT02949947",
      "title": "Efficacy of Ferric Carboxymaltose in Gastrointestinal Stromal Tumor (GIST) Patients With Iron Deficiency Anemia (IDA) Receiving Systemic Therapy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Malignant Neoplasms of Mesothelial and Soft Tissue",
        "Gastrointestinal Stromal Tumor With Neurogenic Differentiation"
      ],
      "interventions": [
        {
          "name": "Ferric Carboxymaltose",
          "type": "DRUG"
        },
        {
          "name": "Iron Supplements",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Questionnaire",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT",
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2017-12-18",
      "completion_date": "2019-03-06",
      "has_results": true,
      "last_update_posted_date": "2020-04-06",
      "last_synced_at": "2026-09-03T13:36:55.629Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02949947"
    }
  ]
}