{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Lanthanum+Carbonate+%28Fosrenol%29",
    "query": {
      "intervention": "Lanthanum Carbonate (Fosrenol)"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 23,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Lanthanum+Carbonate+%28Fosrenol%29&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-10-03T16:26:42.308Z",
  "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": "NCT00234702",
      "title": "Efficacy and Safety of Lanthanum Carbonate in Reducing Serum Phosphorus Levels in Subjects With Stage 3 and 4 Chronic Kidney Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Kidney Diseases"
      ],
      "interventions": [
        {
          "name": "Lanthanum carbonate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 84,
      "start_date": "2006-01-11",
      "completion_date": "2007-06-01",
      "has_results": false,
      "last_update_posted_date": "2021-06-08",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 10,
      "location_summary": "Los Angeles, California • Torrance, California • Thornton, Colorado + 7 more",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Thornton",
          "state": "Colorado"
        },
        {
          "city": "Hudson",
          "state": "Florida"
        },
        {
          "city": "Brooklyn Center",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00234702"
    },
    {
      "nct_id": "NCT01341678",
      "title": "Circadian Rhythm Modulation by Dietary Phosphorus in Chronic Kidney Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "Lanthanum Carbonate",
          "type": "DRUG"
        },
        {
          "name": "NeutraPhos",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Diet Only",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "Geoffrey Block",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2011-04",
      "completion_date": "2011-10",
      "has_results": false,
      "last_update_posted_date": "2014-02-11",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01341678"
    },
    {
      "nct_id": "NCT00880750",
      "title": "Pharmacodynamic Study of Two Lanthanum Carbonate Formulations in Healthy Adults",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "End Stage Renal Disease"
      ],
      "interventions": [
        {
          "name": "Lanthanum carbonate Granule Formulation",
          "type": "DRUG"
        },
        {
          "name": "Lanthanum carbonate Chewable Tablets (Fosrenol)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 72,
      "start_date": "2009-01-28",
      "completion_date": "2009-06-22",
      "has_results": true,
      "last_update_posted_date": "2021-06-11",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 1,
      "location_summary": "Cypress, California",
      "locations": [
        {
          "city": "Cypress",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00880750"
    },
    {
      "nct_id": "NCT00557323",
      "title": "Long-term Effect of Lanthanum Carbonate on Bone",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hyperphosphatemia"
      ],
      "interventions": [
        {
          "name": "Lanthanum carbonate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 34,
      "start_date": "2007-03-15",
      "completion_date": "2010-08-31",
      "has_results": true,
      "last_update_posted_date": "2021-07-13",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 8,
      "location_summary": "Lynwood, California • Torrance, California • Springfield, Massachusetts + 5 more",
      "locations": [
        {
          "city": "Lynwood",
          "state": "California"
        },
        {
          "city": "Torrance",
          "state": "California"
        },
        {
          "city": "Springfield",
          "state": "Massachusetts"
        },
        {
          "city": "Canton",
          "state": "Ohio"
        },
        {
          "city": "Providence",
          "state": "Rhode Island"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00557323"
    },
    {
      "nct_id": "NCT02258074",
      "title": "The COMBINE Study: The CKD Optimal Management With BInders and NicotinamidE",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Chronic Kidney Disease"
      ],
      "interventions": [
        {
          "name": "Nicotinamide",
          "type": "DRUG"
        },
        {
          "name": "Lanthanum Carbonate",
          "type": "DRUG"
        },
        {
          "name": "Placebo (for Nicotinamide)",
          "type": "DRUG"
        },
        {
          "name": "Placebo (for lanthanum carbonate)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 205,
      "start_date": "2015-03",
      "completion_date": "2019-09",
      "has_results": true,
      "last_update_posted_date": "2021-08-02",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 7,
      "location_summary": "San Diego, California • Denver, Colorado • Washington D.C., District of Columbia + 2 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02258074"
    },
    {
      "nct_id": "NCT01289626",
      "title": "Efficacy of Lanthanum Carbonate in Calciphylaxis",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Calciphylaxis"
      ],
      "interventions": [
        {
          "name": "lanthanum carbonate",
          "type": "DRUG"
        },
        {
          "name": "Lanthanum for calciphylaxis",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2011-02",
      "completion_date": "2013-05",
      "has_results": false,
      "last_update_posted_date": "2014-05-20",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01289626"
    },
    {
      "nct_id": "NCT00567723",
      "title": "Long Term Treatment of End Stage Renal Disease Patients With Lanthanum Carbonate (Fosrenol)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Hyperphosphatemia"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Shire",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 2105,
      "start_date": "2006-04-25",
      "completion_date": "2016-06-07",
      "has_results": false,
      "last_update_posted_date": "2021-03-17",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 199,
      "location_summary": "Birmingham, Alabama • Hoover, Alabama • Mobile, Alabama + 163 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Hoover",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Covina",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00567723"
    },
    {
      "nct_id": "NCT04485039",
      "title": "Drug-drug Interaction Study of TPOXX When Co-administered With Phosphate Binders",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Smallpox"
      ],
      "interventions": [
        {
          "name": "Tecovirimat",
          "type": "DRUG"
        },
        {
          "name": "sevelamer carbonate oral tablet",
          "type": "DRUG"
        },
        {
          "name": "sucroferric oxyhydroxide chewable tablet",
          "type": "DRUG"
        },
        {
          "name": "calcium acetate oral tablet",
          "type": "DRUG"
        },
        {
          "name": "Lanthanum Carbonate Chewable Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "SIGA Technologies",
      "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": 44,
      "start_date": "2022-06-08",
      "completion_date": "2023-04-23",
      "has_results": true,
      "last_update_posted_date": "2026-09-11",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 1,
      "location_summary": "Austin, Texas",
      "locations": [
        {
          "city": "Austin",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04485039"
    },
    {
      "nct_id": "NCT00875017",
      "title": "Comparing Absorption of Dietary Phosphorus When Administering FOSRENOL® or RENVELA® in Healthy Adult Volunteers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Kidney Failure, Chronic"
      ],
      "interventions": [
        {
          "name": "Lanthanum Carbonate",
          "type": "DRUG"
        },
        {
          "name": "Sevelamer",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Shire",
      "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": 31,
      "start_date": "2009-04-20",
      "completion_date": "2009-06-16",
      "has_results": true,
      "last_update_posted_date": "2021-06-15",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 1,
      "location_summary": "Cypress, California",
      "locations": [
        {
          "city": "Cypress",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00875017"
    },
    {
      "nct_id": "NCT00660530",
      "title": "Chewed vs. Crushed Lanthanum Carbonate in Hemodialysis Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hyperphosphatemia",
        "Kidney Disease"
      ],
      "interventions": [
        {
          "name": "Lanthanum Carbonate Chewable Product",
          "type": "DRUG"
        },
        {
          "name": "Lanthanum carbonate crushed powder",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Illinois at Chicago",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 11,
      "start_date": "2008-01",
      "completion_date": "2009-11",
      "has_results": true,
      "last_update_posted_date": "2020-11-03",
      "last_synced_at": "2026-10-03T16:26:42.308Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00660530"
    }
  ]
}