{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+-+Treatment+2&page=2", "query": { "intervention": "Vitamin D - Treatment 2", "page": 2 }, "page_size": 10 }, "pagination": { "page": 2, "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=3&page_size=10", "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Vitamin+D+-+Treatment+2&page=1&page_size=10" }, "source": "remote", "last_synced_at": "2026-10-05T09:54:17.473Z", "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": "NCT05533658", "title": "The Effects of VisionPure™ on Indices of Vision Health and Cognitive Function", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Eye Health", "Vision", "Cognitive Function" ], "interventions": [ { "name": "VisionPure Dietary Supplement", "type": "DIETARY_SUPPLEMENT" }, { "name": "Placebo", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DIETARY_SUPPLEMENT" ], "sponsor": "Applied Science & Performance Institute", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "40 Years", "sex": "ALL", "summary": "18 Years to 40 Years" }, "enrollment_count": 15, "start_date": "2022-08-01", "completion_date": "2023-02-03", "has_results": false, "last_update_posted_date": "2023-05-26", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 3, "location_summary": "Lutz, Florida • Tampa, Florida", "locations": [ { "city": "Lutz", "state": "Florida" }, { "city": "Tampa", "state": "Florida" }, { "city": "Tampa", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT05533658" }, { "nct_id": "NCT00084864", "title": "Calcitriol and Dexamethasone Before Radical Prostatectomy in Treating Patients With Localized Adenocarcinoma (Cancer) of the Prostate", "overall_status": "TERMINATED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Prostate Cancer" ], "interventions": [ { "name": "calcitriol", "type": "DIETARY_SUPPLEMENT" }, { "name": "dexamethasone", "type": "DRUG" }, { "name": "clinical observation", "type": "OTHER" } ], "intervention_types": [ "DIETARY_SUPPLEMENT", "DRUG", "OTHER" ], "sponsor": "Roswell Park Cancer Institute", "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": 25, "start_date": "2002-09", "completion_date": "2010-05", "has_results": true, "last_update_posted_date": "2017-06-12", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 1, "location_summary": "Buffalo, New York", "locations": [ { "city": "Buffalo", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT00084864" }, { "nct_id": "NCT00392327", "title": "Chemotherapy and Radiation Therapy in Treating Young Patients With Newly Diagnosed, Previously Untreated, High-Risk Medulloblastoma/PNET", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Anaplastic Medulloblastoma", "Medulloblastoma" ], "interventions": [ { "name": "Biospecimen Collection", "type": "PROCEDURE" }, { "name": "Carboplatin", "type": "DRUG" }, { "name": "Cisplatin", "type": "DRUG" }, { "name": "Cyclophosphamide", "type": "DRUG" }, { "name": "Filgrastim", "type": "BIOLOGICAL" }, { "name": "Isotretinoin", "type": "DRUG" }, { "name": "Lumbar Puncture", "type": "PROCEDURE" }, { "name": "Magnetic Resonance Imaging", "type": "PROCEDURE" }, { "name": "Quality-of-Life Assessment", "type": "OTHER" }, { "name": "Radiation Therapy", "type": "RADIATION" }, { "name": "Vincristine Sulfate", "type": "DRUG" } ], "intervention_types": [ "PROCEDURE", "DRUG", "BIOLOGICAL", "OTHER", "RADIATION" ], "sponsor": "Children's Oncology Group", "sponsor_class": "NETWORK", "healthy_volunteers": false, "eligibility": { "minimum_age": "3 Years", "maximum_age": "22 Years", "sex": "ALL", "summary": "3 Years to 22 Years" }, "enrollment_count": 379, "start_date": "2007-05-23", "completion_date": "2026-03-31", "has_results": true, "last_update_posted_date": "2026-06-08", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 170, "location_summary": "Birmingham, Alabama • Anchorage, Alaska • Mesa, Arizona + 126 more", "locations": [ { "city": "Birmingham", "state": "Alabama" }, { "city": "Birmingham", "state": "Alabama" }, { "city": "Anchorage", "state": "Alaska" }, { "city": "Mesa", "state": "Arizona" }, { "city": "Little Rock", "state": "Arkansas" } ], "official_url": "https://clinicaltrials.gov/study/NCT00392327" }, { "nct_id": "NCT02404870", "title": "Acute Effects of Canagliflozin, a Sodium Glucose Co-Transporter 2 (SGLT2) Inhibitor on Bone Metabolism in Healthy Volunteers", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Healthy Volunteers" ], "interventions": [ { "name": "Placebo", "type": "DRUG" }, { "name": "Canagliflozin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 67, "start_date": "2014-09-16", "completion_date": "2019-09-03", "has_results": false, "last_update_posted_date": "2025-03-04", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 1, "location_summary": "Bethesda, Maryland", "locations": [ { "city": "Bethesda", "state": "Maryland" } ], "official_url": "https://clinicaltrials.gov/study/NCT02404870" }, { "nct_id": "NCT01317940", "title": "Nutrition and Body Composition in Acute Lymphoblastic Leukemia", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "Precursor Cell Lymphoblastic Leukemia-Lymphoma", "Vitamin D Deficiency" ], "interventions": [ { "name": "Vitamin D and Calcium Citrate", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DIETARY_SUPPLEMENT" ], "sponsor": "Children's Hospital Los Angeles", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "10 Years", "maximum_age": "29 Years", "sex": "ALL", "summary": "10 Years to 29 Years" }, "enrollment_count": 76, "start_date": "2011-03", "completion_date": "2016-01", "has_results": true, "last_update_posted_date": "2020-07-08", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 1, "location_summary": "Los Angeles, California", "locations": [ { "city": "Los Angeles", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT01317940" }, { "nct_id": "NCT00921557", "title": "Safety and Effectiveness of Alendronate for Bone Mineral Density in HIV-infected Children and Adolescents", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE2" ], "conditions": [ "HIV Infection" ], "interventions": [ { "name": "Alendronate", "type": "DRUG" }, { "name": "Placebo", "type": "DRUG" }, { "name": "Calcium carbonate/vitamin D", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DRUG", "DIETARY_SUPPLEMENT" ], "sponsor": "National Institute of Allergy and Infectious Diseases (NIAID)", "sponsor_class": "NIH", "healthy_volunteers": false, "eligibility": { "minimum_age": "11 Years", "maximum_age": "24 Years", "sex": "ALL", "summary": "11 Years to 24 Years" }, "enrollment_count": 52, "start_date": "2009-11", "completion_date": "2017-01", "has_results": true, "last_update_posted_date": "2021-11-05", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 7, "location_summary": "Los Angeles, California • Miami, Florida • Tampa, Florida + 4 more", "locations": [ { "city": "Los Angeles", "state": "California" }, { "city": "Miami", "state": "Florida" }, { "city": "Tampa", "state": "Florida" }, { "city": "Chicago", "state": "Illinois" }, { "city": "Baltimore", "state": "Maryland" } ], "official_url": "https://clinicaltrials.gov/study/NCT00921557" }, { "nct_id": "NCT00601328", "title": "Bioequivalency Study of Calcitriol Tablets Under Fasting Conditions", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Secondary Hyperparathyroidism", "Hypocalcemia" ], "interventions": [ { "name": "Calcitriol", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Roxane Laboratories", "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": 36, "start_date": "2003-07", "completion_date": "2003-08", "has_results": false, "last_update_posted_date": "2018-01-23", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 1, "location_summary": "Springfield, Missouri", "locations": [ { "city": "Springfield", "state": "Missouri" } ], "official_url": "https://clinicaltrials.gov/study/NCT00601328" }, { "nct_id": "NCT07241585", "title": "Vitamin D Effects on Immune Microenvironment of Nonmelanoma Skin Cancer After Photodynamic Therapy (PDT)", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Nonmelanoma Skin Cancer", "Basal Cell Carcinoma", "Squamous Cell Carcinoma" ], "interventions": [ { "name": "Vitamin D (VitD)", "type": "DIETARY_SUPPLEMENT" }, { "name": "Placebo", "type": "OTHER" }, { "name": "Photodynamic therapy (PDT)", "type": "OTHER" }, { "name": "Mohs surgery or electrodessication & curettage (ED&C) (standard of care)", "type": "PROCEDURE" } ], "intervention_types": [ "DIETARY_SUPPLEMENT", "OTHER", "PROCEDURE" ], "sponsor": "Case Comprehensive 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": 54, "start_date": "2026-02-25", "completion_date": "2027-08", "has_results": false, "last_update_posted_date": "2026-08-18", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 1, "location_summary": "Cleveland, Ohio", "locations": [ { "city": "Cleveland", "state": "Ohio" } ], "official_url": "https://clinicaltrials.gov/study/NCT07241585" }, { "nct_id": "NCT00889629", "title": "Pilot Study Evaluating Doxercalciferol Replacement Therapy in Kidney Transplant Recipients", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE4" ], "conditions": [ "Chronic Kidney Disease", "Kidney Transplantation" ], "interventions": [ { "name": "Doxercalciferol", "type": "DRUG" }, { "name": "placebo", "type": "DRUG" }, { "name": "25-OH Vitamin D3", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Mariana Markell", "sponsor_class": "OTHER", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 39, "start_date": "2008-11", "completion_date": "2010-01", "has_results": false, "last_update_posted_date": "2019-02-22", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 1, "location_summary": "Brooklyn, New York", "locations": [ { "city": "Brooklyn", "state": "New York" } ], "official_url": "https://clinicaltrials.gov/study/NCT00889629" }, { "nct_id": "NCT02959762", "title": "Vitamin K to Slow Progression of Dyslipidemia and Diabetes Risk (Vita-K 'n' Kids Study II)", "overall_status": "UNKNOWN", "study_type": "INTERVENTIONAL", "phases": [ "NA" ], "conditions": [ "Obesity", "Insulin Resistance", "Obesity in Diabetes", "Nutritional and Metabolic Diseases", "Hyperlipidemia", "Hyperglycemia", "Cardiovascular Diseases" ], "interventions": [ { "name": "Placebo-Control", "type": "DIETARY_SUPPLEMENT" }, { "name": "Low-Dose Vitamin K2 (menaquinone-7; 45-mcg/d)", "type": "DIETARY_SUPPLEMENT" }, { "name": "High-Dose Vitamin K2 (menaquinone-7; 90 mcg/d)", "type": "DIETARY_SUPPLEMENT" } ], "intervention_types": [ "DIETARY_SUPPLEMENT" ], "sponsor": "Augusta University", "sponsor_class": "OTHER", "healthy_volunteers": true, "eligibility": { "minimum_age": "8 Years", "maximum_age": "17 Years", "sex": "ALL", "summary": "8 Years to 17 Years" }, "enrollment_count": 30, "start_date": "2016-10", "completion_date": "2020-12-30", "has_results": false, "last_update_posted_date": "2019-11-20", "last_synced_at": "2026-10-05T09:54:17.473Z", "location_count": 1, "location_summary": "Augusta, Georgia", "locations": [ { "city": "Augusta", "state": "Georgia" } ], "official_url": "https://clinicaltrials.gov/study/NCT02959762" } ] }