{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Levothyroxine+Sodium+%28LT4%29+Tablets",
    "query": {
      "intervention": "Levothyroxine Sodium (LT4) Tablets"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 19,
    "total_pages": 2,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Levothyroxine+Sodium+%28LT4%29+Tablets&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-04T10:00:54.611Z",
  "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": "NCT04782856",
      "title": "Energy Metabolism in Thyroidectomized Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Thyroid Goiter",
        "Hypothyroidism",
        "Thyroid Cancer"
      ],
      "interventions": [
        {
          "name": "Levothyroxine",
          "type": "DRUG"
        },
        {
          "name": "Liothyronine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Virginia Commonwealth University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "18 Years to 89 Years"
      },
      "enrollment_count": 13,
      "start_date": "2020-10-28",
      "completion_date": "2023-04-19",
      "has_results": true,
      "last_update_posted_date": "2024-06-14",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "Richmond, Virginia",
      "locations": [
        {
          "city": "Richmond",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04782856"
    },
    {
      "nct_id": "NCT00648700",
      "title": "Fasting Study of Levothyroxine Sodium Tablets 300 μg to Levothroid® Tablets 300 μg",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Levothyroxine Sodium Tablets 300 μg",
          "type": "DRUG"
        },
        {
          "name": "Levothroid® Tablets 300 μg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mylan Pharmaceuticals Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 32,
      "start_date": "2005-08",
      "completion_date": "2005-09",
      "has_results": false,
      "last_update_posted_date": "2024-04-24",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "Fargo, North Dakota",
      "locations": [
        {
          "city": "Fargo",
          "state": "North Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00648700"
    },
    {
      "nct_id": "NCT03787303",
      "title": "Study of Euthyroid Hypothyroxinemia in Metastatic Breast Carcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Breast Cancer",
        "Thyroid Dysfunction"
      ],
      "interventions": [
        {
          "name": "Triiodothyronine (T3)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Aultman Health Foundation",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "105 Years",
        "sex": "ALL",
        "summary": "18 Years to 105 Years"
      },
      "enrollment_count": 7,
      "start_date": "2019-03-01",
      "completion_date": "2022-03-09",
      "has_results": true,
      "last_update_posted_date": "2022-05-13",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "Canton, Ohio",
      "locations": [
        {
          "city": "Canton",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03787303"
    },
    {
      "nct_id": "NCT04878614",
      "title": "Comparison of Levothyroxine Formulation in Hypothyroid Patients With Enteral Feeding",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypothyroidism"
      ],
      "interventions": [
        {
          "name": "Levothyroxine Tablet",
          "type": "DRUG"
        },
        {
          "name": "Levothyroxine Sodium",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Los Angeles",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2021-05-05",
      "completion_date": "2022-02-16",
      "has_results": false,
      "last_update_posted_date": "2023-04-10",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04878614"
    },
    {
      "nct_id": "NCT03094416",
      "title": "Levothyroxine Sodium in Thyroidectomized Patients Taking Proton Pump Inhibitors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypothyroidism;Postablative"
      ],
      "interventions": [
        {
          "name": "levothyroxine sodium capsule",
          "type": "DRUG"
        },
        {
          "name": "Proton pump inhibitor (PPI)",
          "type": "DRUG"
        },
        {
          "name": "Levothyroxine Sodium (LT4) Tablets",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "IBSA Institut Biochimique SA",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "ALL",
        "summary": "18 Years to 65 Years"
      },
      "enrollment_count": 66,
      "start_date": "2018-07-30",
      "completion_date": "2020-06-15",
      "has_results": true,
      "last_update_posted_date": "2022-04-05",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 9,
      "location_summary": "La Jolla, California • Ventura, California • Washington D.C., District of Columbia + 6 more",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Ventura",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03094416"
    },
    {
      "nct_id": "NCT00647855",
      "title": "Fasting Study of Levothyroxine Sodium Tablets 300 μg to Synthroid® Tablets 300 μg",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Levothyroxine Sodium Tablets 300 μg",
          "type": "DRUG"
        },
        {
          "name": "Synthroid® Tablets 300 μg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Mylan Pharmaceuticals Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 30,
      "start_date": "2003-05",
      "completion_date": "2003-06",
      "has_results": false,
      "last_update_posted_date": "2024-04-24",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "Fargo, North Dakota",
      "locations": [
        {
          "city": "Fargo",
          "state": "North Dakota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00647855"
    },
    {
      "nct_id": "NCT05526144",
      "title": "Thyroid Hormone for Treatment of Nonalcoholic Steatohepatitis in Veterans",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Nonalcoholic Steatohepatitis",
        "Liver Fibrosis"
      ],
      "interventions": [
        {
          "name": "Synthroid",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "ALL",
        "summary": "18 Years to 75 Years"
      },
      "enrollment_count": 128,
      "start_date": "2023-04-01",
      "completion_date": "2029-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-19",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05526144"
    },
    {
      "nct_id": "NCT04288115",
      "title": "Discontinuation of Levothyroxine Therapy for Patients With Subclinical Hypothyroidism",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Subclinical Hypothyroidism"
      ],
      "interventions": [
        {
          "name": "Levothyroxine",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "VA Office of Research and Development",
      "sponsor_class": "FED",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 52,
      "start_date": "2021-03-24",
      "completion_date": "2022-12-31",
      "has_results": true,
      "last_update_posted_date": "2023-11-18",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "North Little Rock, Arkansas",
      "locations": [
        {
          "city": "North Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04288115"
    },
    {
      "nct_id": "NCT02946918",
      "title": "Levothyroxine Replacement With Liquid Gel Capsules vs Tablets Post-thyroidectomy",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Thyroid Cancer",
        "Postsurgical Hypothyroidism"
      ],
      "interventions": [
        {
          "name": "Levothyroxine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2017-02-01",
      "completion_date": "2019-11-04",
      "has_results": true,
      "last_update_posted_date": "2020-12-01",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02946918"
    },
    {
      "nct_id": "NCT00230802",
      "title": "Thyroid Hormone Dose Adjustment in Pregnancy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Pregnancy",
        "Hypothyroidism"
      ],
      "interventions": [
        {
          "name": "Anticipatory dose increase of levothyroxine",
          "type": "DRUG"
        },
        {
          "name": "levothyroxine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Brigham and Women's Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 48,
      "start_date": "2005-07",
      "completion_date": "2010-07",
      "has_results": true,
      "last_update_posted_date": "2016-12-23",
      "last_synced_at": "2026-10-04T10:00:54.611Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00230802"
    }
  ]
}