{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+-+Treatment+2&page=3", "query": { "intervention": "Vitamin D - Treatment 2", "page": 3 }, "page_size": 10 }, "pagination": { "page": 3, "page_size": 10, "total_count": 188, "total_pages": 19, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+-+Treatment+2&page=4&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+-+Treatment+2&page=2&page_size=10" }, "source": "remote", "last_synced_at": "2026-10-06T22:50:34.769Z", "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": "NCT01474486", "title": "Feasibility and Effectiveness of Micronutrients as Palliative Care Therapy in Patients With Congestive Heart Failure", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Congestive Heart Failure", "Ischemic Cardiomyopathy" ], "interventions": [ { "name": "Micronutrients", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Phoenix VA Health Care System", "sponsor_class": "FED", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "89 Years", "sex": "ALL", "summary": "18 Years to 89 Years" }, "enrollment_count": 40, "start_date": "2010-04", "completion_date": "2016-02", "has_results": true, "last_update_posted_date": "2021-06-10", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 1, "location_summary": "Phoenix, Arizona", "locations": [ { "city": "Phoenix", "state": "Arizona" } ], "official_url": "https://clinicaltrials.gov/study/NCT01474486" }, { "nct_id": "NCT03994172", "title": "Novel Combination Therapy for Osteoporosis in Men", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Male Osteoporosis" ], "interventions": [ { "name": "Teriparatide or human parathyroid hormone (PTH) 1-34", "type": "DRUG" }, { "name": "Cinacalcet", "type": "DRUG" }, { "name": "placebo tablet", "type": "DRUG" }, { "name": "Calcium citrate tablet", "type": "DIETARY_SUPPLEMENT" }, { "name": "Vitamin D3", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DRUG", "DIETARY_SUPPLEMENT" ], "sponsor": "VA Office of Research and Development", "sponsor_class": "FED", "healthy_volunteers": false, "eligibility": { "minimum_age": "60 Years", "maximum_age": "85 Years", "sex": "MALE", "summary": "60 Years to 85 Years · Male only" }, "enrollment_count": 40, "start_date": "2019-07-01", "completion_date": "2025-06-30", "has_results": true, "last_update_posted_date": "2026-09-03", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 1, "location_summary": "San Francisco, California", "locations": [ { "city": "San Francisco", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT03994172" }, { "nct_id": "NCT01578473", "title": "Testosterone Pellets Plus Vitamin D and E Versus Vitamin D and E Alone for the Treatment of Peyronie's Disease", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Peyronie's Disease" ], "interventions": [ { "name": "Vitamin D2", "type": "DRUG" }, { "name": "Vitamin E", "type": "DRUG" }, { "name": "Testosterone Pellets", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Men's Health Boston", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "70 Years", "sex": "MALE", "summary": "18 Years to 70 Years · Male only" }, "enrollment_count": 75, "start_date": "2013-05-23", "completion_date": "2017-11-13", "has_results": false, "last_update_posted_date": "2018-03-29", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 1, "location_summary": "Chestnut Hill, Massachusetts", "locations": [ { "city": "Chestnut Hill", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT01578473" }, { "nct_id": "NCT01320722", "title": "Study of Vitamin D and Uric Acid Lowering on Kidney and Blood Vessel Function", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Renal Function", "Endothelial Function", "Blood Pressure", "Overweight", "Obesity" ], "interventions": [ { "name": "Vitamin D ergocalciferol", "type": "DRUG" }, { "name": "Probenecid", "type": "DRUG" }, { "name": "Allopurinol", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Brigham and Women's Hospital", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "75 Years", "sex": "ALL", "summary": "18 Years to 75 Years" }, "enrollment_count": 242, "start_date": "2011-03", "completion_date": "2015-06", "has_results": true, "last_update_posted_date": "2017-06-29", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 1, "location_summary": "Boston, Massachusetts", "locations": [ { "city": "Boston", "state": "Massachusetts" } ], "official_url": "https://clinicaltrials.gov/study/NCT01320722" }, { "nct_id": "NCT02360644", "title": "Drug Metabolizing Enzyme and Transporter Function in Chronic Kidney Disease", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Chronic Kidney Diseases", "Deficiency, Vitamin D" ], "interventions": [ { "name": "Cholecalciferol", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DIETARY_SUPPLEMENT" ], "sponsor": "University of Colorado, Denver", "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": 23, "start_date": "2014-10", "completion_date": "2019-02-01", "has_results": false, "last_update_posted_date": "2021-06-30", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 2, "location_summary": "Aurora, Colorado • Pittsburgh, Pennsylvania", "locations": [ { "city": "Aurora", "state": "Colorado" }, { "city": "Pittsburgh", "state": "Pennsylvania" } ], "official_url": "https://clinicaltrials.gov/study/NCT02360644" }, { "nct_id": "NCT03418038", "title": "Ascorbic Acid and Chemotherapy for the Treatment of Relapsed or Refractory Lymphoma, CCUS, and Chronic Myelomonocytic Leukemia", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Clonal Cytopenia of Undetermined Significance", "High Grade B-Cell Lymphoma With MYC and BCL2 or BCL6 Rearrangements", "Recurrent Diffuse Large B-Cell Lymphoma", "Recurrent Hodgkin Lymphoma", "Recurrent Lymphoma", "Refractory Diffuse Large B-Cell Lymphoma", "Refractory Lymphoma", "Chronic Myelomonocytic Leukemia" ], "interventions": [ { "name": "Ascorbic Acid", "type": "DIETARY_SUPPLEMENT" }, { "name": "Carboplatin", "type": "DRUG" }, { "name": "Cisplatin", "type": "DRUG" }, { "name": "Cytarabine", "type": "DRUG" }, { "name": "Dexamethasone", "type": "DRUG" }, { "name": "Etoposide", "type": "DRUG" }, { "name": "Gemcitabine Hydrochloride", "type": "DRUG" }, { "name": "Ifosfamide", "type": "DRUG" }, { "name": "Laboratory Biomarker Analysis", "type": "OTHER" }, { "name": "Oxaliplatin", "type": "DRUG" }, { "name": "Placebo Administration", "type": "OTHER" }, { "name": "Questionnaire Administration", "type": "OTHER" }, { "name": "Rituximab", "type": "BIOLOGICAL" }, { "name": "Decitabine", "type": "DRUG" }, { "name": "Biospecimen Collection", "type": "PROCEDURE" }, { "name": "Core Biopsy", "type": "PROCEDURE" }, { "name": "Bone Marrow Aspiration", "type": "PROCEDURE" }, { "name": "Bone Marrow Biopsy", "type": "PROCEDURE" }, { "name": "Echocardiography", "type": "PROCEDURE" }, { "name": "Positron Emission Tomography", "type": "PROCEDURE" }, { "name": "Magnetic Resonance Imaging", "type": "PROCEDURE" }, { "name": "Central Venous Cannula Insertion", "type": "PROCEDURE" }, { "name": "Portacath Placement", "type": "PROCEDURE" }, { "name": "Computed Tomography", "type": "PROCEDURE" }, { "name": "Decitabine and Cedazuridine", "type": "DRUG" } ], "intervention_types": [ "DIETARY_SUPPLEMENT", "DRUG", "OTHER", "BIOLOGICAL", "PROCEDURE" ], "sponsor": "Mayo Clinic", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 80, "start_date": "2018-03-23", "completion_date": "2033-11-02", "has_results": false, "last_update_posted_date": "2026-09-28", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 4, "location_summary": "Mankato, Minnesota • Rochester, Minnesota • Eau Claire, Wisconsin + 1 more", "locations": [ { "city": "Mankato", "state": "Minnesota" }, { "city": "Rochester", "state": "Minnesota" }, { "city": "Eau Claire", "state": "Wisconsin" }, { "city": "La Crosse", "state": "Wisconsin" } ], "official_url": "https://clinicaltrials.gov/study/NCT03418038" }, { "nct_id": "NCT03176849", "title": "A Randomized Phase IV Control Trial of Single High Dose Oral Vitamin D3 in Pediatric Patients Undergoing HSCT", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Vitamin D Deficiency", "Stem Cell Transplant Complications", "Pediatric Cancer", "Blood Disorder", "Pediatric Acute Myeloid Leukemia", "Pediatric Acute Lymphoid Leukemia", "Myelodysplastic Syndromes", "Sickle Cell Anemia in Children", "Aplastic Anemia", "Thalassemia in Children" ], "interventions": [ { "name": "Vitamin D3", "type": "DIETARY_SUPPLEMENT" }, { "name": "Standard Vitamin D3 Supplementation", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DIETARY_SUPPLEMENT" ], "sponsor": "Phoenix Children's Hospital", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "1 Year", "maximum_age": "25 Years", "sex": "ALL", "summary": "1 Year to 25 Years" }, "enrollment_count": 49, "start_date": "2017-11-01", "completion_date": "2019-07-01", "has_results": false, "last_update_posted_date": "2020-11-17", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 1, "location_summary": "Phoenix, Arizona", "locations": [ { "city": "Phoenix", "state": "Arizona" } ], "official_url": "https://clinicaltrials.gov/study/NCT03176849" }, { "nct_id": "NCT00499408", "title": "Vitamin D and Soy Supplements in Treating Patients With Recurrent Prostate Cancer", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Prostate Cancer" ], "interventions": [ { "name": "Vitamin D", "type": "DIETARY_SUPPLEMENT" }, { "name": "soy", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DIETARY_SUPPLEMENT" ], "sponsor": "Wake Forest University Health Sciences", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "120 Years", "sex": "MALE", "summary": "18 Years to 120 Years · Male only" }, "enrollment_count": 26, "start_date": "2007-04", "completion_date": "2012-12", "has_results": true, "last_update_posted_date": "2018-11-21", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 1, "location_summary": "Winston-Salem, North Carolina", "locations": [ { "city": "Winston-Salem", "state": "North Carolina" } ], "official_url": "https://clinicaltrials.gov/study/NCT00499408" }, { "nct_id": "NCT01870115", "title": "Melatonin-Micronutrients for Osteopenia Treatment Study", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Osteoporosis", "Osteopenia" ], "interventions": [ { "name": "Fiber Pill", "type": "DIETARY_SUPPLEMENT" }, { "name": "Melatonin, Strontium citrate, Vitamins D3 and K2", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DIETARY_SUPPLEMENT" ], "sponsor": "Duquesne University", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": null, "maximum_age": null, "sex": "FEMALE", "summary": "Female only" }, "enrollment_count": 23, "start_date": "2013-08", "completion_date": "2017-02-09", "has_results": false, "last_update_posted_date": "2018-06-14", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 1, "location_summary": "Pittsburgh, Pennsylvania", "locations": [ { "city": "Pittsburgh", "state": "Pennsylvania" } ], "official_url": "https://clinicaltrials.gov/study/NCT01870115" }, { "nct_id": "NCT03307785", "title": "Study of Niraparib, TSR-022, Bevacizumab, and Platinum-Based Doublet Chemotherapy in Combination With TSR-042", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Neoplasms", "Metastatic Cancer", "Advanced Cancer", "Solid Tumor", "Non Small Cell Lung Cancer Metastatic", "Non Small Cell Lung Cancer Stage IIIB", "Non Small Cell Lung Cancer" ], "interventions": [ { "name": "Niraparib", "type": "DRUG" }, { "name": "TSR-042", "type": "DRUG" }, { "name": "Carboplatin-Paclitaxel", "type": "DRUG" }, { "name": "Bevacizumab", "type": "DRUG" }, { "name": "TSR-022", "type": "DRUG" }, { "name": "Carboplatin-Pemetrexed", "type": "DRUG" }, { "name": "Carboplatin-Nab-Paclitaxel", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Tesaro, Inc.", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 60, "start_date": "2017-10-12", "completion_date": "2024-12-11", "has_results": true, "last_update_posted_date": "2025-11-25", "last_synced_at": "2026-10-06T22:50:34.769Z", "location_count": 8, "location_summary": "Scottsdale, Arizona • Encinitas, California • San Marcos, California + 5 more", "locations": [ { "city": "Scottsdale", "state": "Arizona" }, { "city": "Encinitas", "state": "California" }, { "city": "San Marcos", "state": "California" }, { "city": "Sarasota", "state": "Florida" }, { "city": "Canton", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT03307785" } ] }