{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Calcium+absorption&page=2",
    "query": {
      "intervention": "Calcium absorption",
      "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=Calcium+absorption&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-12T05:46:12.536Z",
  "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": "NCT00752102",
      "title": "Vitamin D and Coronary Calcification Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Chronic Kidney Disease",
        "Vitamin D Deficiency",
        "Coronary Calcification",
        "Disorders of Calcium and Bone Metabolism"
      ],
      "interventions": [
        {
          "name": "Calcitriol (Rocaltrol®)",
          "type": "DRUG"
        },
        {
          "name": "Paricalcitol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Joslin Diabetes Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "25 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "25 Years and older"
      },
      "enrollment_count": 44,
      "start_date": "2008-09",
      "completion_date": "2013-10",
      "has_results": true,
      "last_update_posted_date": "2017-12-08",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00752102"
    },
    {
      "nct_id": "NCT01263847",
      "title": "Galactooligosaccharide (GOS) Supplementation and Calcium Absorption in Girls",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Galactooligosaccharide",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Purdue University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "12 Years",
        "sex": "FEMALE",
        "summary": "10 Years to 12 Years · Female only"
      },
      "enrollment_count": 31,
      "start_date": "2009-06",
      "completion_date": "2010-07",
      "has_results": false,
      "last_update_posted_date": "2018-05-09",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 1,
      "location_summary": "West Lafayette, Indiana",
      "locations": [
        {
          "city": "West Lafayette",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01263847"
    },
    {
      "nct_id": "NCT01678079",
      "title": "Encapsulated Calcium Absorption in Pregnancy",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Pregnancy"
      ],
      "interventions": [
        {
          "name": "Encapsulated Calcium",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "Non-capsulated Calcium",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "The Hospital for Sick Children",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "30 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 30 Years · Female only"
      },
      "enrollment_count": 61,
      "start_date": "2013-02",
      "completion_date": "2013-06",
      "has_results": false,
      "last_update_posted_date": "2014-11-18",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 2,
      "location_summary": "Baltimore, Maryland • Houston, Texas",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01678079"
    },
    {
      "nct_id": "NCT00427804",
      "title": "Tumor Necrosis Factor Decreases Vitamin D Dependant Calcium Absorption",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Rheumatoid Arthritis",
        "Crohn's Disease"
      ],
      "interventions": [
        {
          "name": "calcitriol",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Atlanta VA Medical Center",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "MALE",
        "summary": "18 Years to 50 Years · Male only"
      },
      "enrollment_count": 9,
      "start_date": "2007-01",
      "completion_date": "2009-11",
      "has_results": true,
      "last_update_posted_date": "2013-02-04",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00427804"
    },
    {
      "nct_id": "NCT06331546",
      "title": "Gut Oxalate Absorption in Calcium Oxalate Stone Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Kidney Stone",
        "Kidney Calculi",
        "Urolithiasis",
        "Urolithiasis, Calcium Oxalate",
        "Nephrolithiasis",
        "Nephrolithiasis, Calcium Oxalate",
        "Oxalate Urolithiasis",
        "Oxaluria",
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Low-oxalate diet",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "High-oxalate diet",
          "type": "DIETARY_SUPPLEMENT"
        },
        {
          "name": "soluble oxalate gut absorption test",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT",
        "OTHER"
      ],
      "sponsor": "University of Alabama at Birmingham",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 80,
      "start_date": "2024-04-17",
      "completion_date": "2031-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-27",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 2,
      "location_summary": "Birmingham, Alabama • Dallas, Texas",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06331546"
    },
    {
      "nct_id": "NCT02291315",
      "title": "Calcium Absorption in Postmenopausal Thai Women",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Fractional Calcium Absorption"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "53 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "53 Years to 65 Years · Female only"
      },
      "enrollment_count": 22,
      "start_date": "2007-07",
      "completion_date": "2007-09",
      "has_results": false,
      "last_update_posted_date": "2014-11-14",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 1,
      "location_summary": "Ithaca, New York",
      "locations": [
        {
          "city": "Ithaca",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02291315"
    },
    {
      "nct_id": "NCT01005927",
      "title": "Fructooligosaccharide and Calcium Absorption in Adolescent Girls",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "Fructooligosaccharide",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "Purdue University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "10 Years",
        "maximum_age": "12 Years",
        "sex": "FEMALE",
        "summary": "10 Years to 12 Years · Female only"
      },
      "enrollment_count": 26,
      "start_date": "2009-01",
      "completion_date": "2009-06",
      "has_results": false,
      "last_update_posted_date": "2018-05-07",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 1,
      "location_summary": "West Lafayette, Indiana",
      "locations": [
        {
          "city": "West Lafayette",
          "state": "Indiana"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01005927"
    },
    {
      "nct_id": "NCT00540878",
      "title": "A Study to Estimate the Effect of Formulation on the Relative Absorption of SB-751689 Administered to Healthy Women",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Osteoporosis"
      ],
      "interventions": [
        {
          "name": "SB-751689 oral tablets (400 mg)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "GlaxoSmithKline",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "40 Years",
        "maximum_age": "65 Years",
        "sex": "FEMALE",
        "summary": "40 Years to 65 Years · Female only"
      },
      "enrollment_count": 25,
      "start_date": "2007-04",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2009-05-18",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 1,
      "location_summary": "Port Orange, Florida",
      "locations": [
        {
          "city": "Port Orange",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00540878"
    },
    {
      "nct_id": "NCT00472745",
      "title": "The Effect of Weight Loss on Bone in Men",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Weight Loss",
        "BMD"
      ],
      "interventions": [
        {
          "name": "Weight Loss",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Weight Maintenance",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Rutgers University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "72 Years",
        "sex": "MALE",
        "summary": "50 Years to 72 Years · Male only"
      },
      "enrollment_count": 44,
      "start_date": "2007-03",
      "completion_date": "2012-04",
      "has_results": false,
      "last_update_posted_date": "2026-05-13",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 1,
      "location_summary": "New Brunswick, New Jersey",
      "locations": [
        {
          "city": "New Brunswick",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00472745"
    },
    {
      "nct_id": "NCT00859651",
      "title": "Vitamin D in Postmenopausal Women at High Risk for Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Cholecalciferol",
          "type": "DRUG"
        },
        {
          "name": "Placebo capsule",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Columbia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "21 Years and older · Female only"
      },
      "enrollment_count": 20,
      "start_date": "2009-06",
      "completion_date": "2015-04",
      "has_results": true,
      "last_update_posted_date": "2017-09-27",
      "last_synced_at": "2026-09-12T05:46:12.536Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00859651"
    }
  ]
}