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In this case, it is used as a control arm in vitamin D supplementation trials.","oneSentence":"Placebo has no active pharmacological mechanism; it is an inert substance used as a control in clinical trials.","_ai_confidence":"high"},"_scrapedAt":"2026-03-27T23:36:10.686Z","_scrapedBy":"cloudflare-swarm","_wikipedia":null,"indications":{"approved":[{"name":"Control arm in vitamin D supplementation clinical trials"}]},"trialDetails":[{"nctId":"NCT05855824","phase":"NA","title":"Toddler Biomarker of Nutrition Study","status":"NOT_YET_RECRUITING","sponsor":"Baylor College of Medicine","startDate":"2026-06-01","conditions":"Pediatric Nutrition, Nutrition, Healthy","enrollment":150},{"nctId":"NCT05933499","phase":"PHASE2","title":"Effect of Tirzepatide and Bimagrumab on Body Composition, Insulin Sensitivity, and Bone in Adults With Obesity","status":"RECRUITING","sponsor":"Massachusetts General Hospital","startDate":"2025-11-05","conditions":"Obesity","enrollment":63},{"nctId":"NCT06610968","phase":"NA","title":"Acute Vitamin D Supplementation on Testosterone in Females","status":"ACTIVE_NOT_RECRUITING","sponsor":"University of Southern California","startDate":"2025-07-01","conditions":"Female Hormone Profile","enrollment":20},{"nctId":"NCT04801849","phase":"PHASE2","title":"Vitamin E Dosing Study","status":"COMPLETED","sponsor":"National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)","startDate":"2022-08-05","conditions":"Nonalcoholic Fatty Liver Disease, Nonalcoholic Steatohepatitis","enrollment":200},{"nctId":"NCT07486141","phase":"NA","title":"Effect of Vitamin D and Folic Acid on Mild Cognitive Impairment","status":"ACTIVE_NOT_RECRUITING","sponsor":"Capital Medical University","startDate":"2024-11-01","conditions":"Mild Cognitive Impairment","enrollment":380},{"nctId":"NCT00856947","phase":"PHASE1","title":"Vitamin D Supplementation During Pregnancy for Prevention of Asthma in Childhood","status":"ACTIVE_NOT_RECRUITING","sponsor":"Copenhagen Studies on Asthma in Childhood","startDate":"2009-03","conditions":"Asthma","enrollment":600},{"nctId":"NCT03418038","phase":"PHASE2","title":"Ascorbic Acid and Chemotherapy for the Treatment of Relapsed or Refractory Lymphoma, CCUS, and Chronic Myelomonocytic Leukemia","status":"RECRUITING","sponsor":"Mayo Clinic","startDate":"2018-03-23","conditions":"Clonal Cytopenia of Undetermined Significance, High Grade B-Cell Lymphoma With MYC and BCL2 or BCL6 Rearrangements, Recurrent Diffuse Large B-Cell Lymphoma","enrollment":80},{"nctId":"NCT06896669","phase":"NA","title":"Effects of Vitamin D and Calcium on Hyperglycemia and Dyslipidemia in Patients Gestational Diabetes","status":"COMPLETED","sponsor":"Riphah International University","startDate":"2025-01-28","conditions":"Diabetes Mellitus, Gestational","enrollment":60},{"nctId":"NCT05688956","phase":"NA","title":"Protein Supplement and Exercise Training for the Treatment of Sarcopenia Risk in Older Adults","status":"COMPLETED","sponsor":"University College Dublin","startDate":"2023-02-01","conditions":"Sarcopenia","enrollment":46},{"nctId":"NCT07241585","phase":"NA","title":"Vitamin D Effects on Immune Microenvironment of Nonmelanoma Skin Cancer After Photodynamic Therapy (PDT)","status":"NOT_YET_RECRUITING","sponsor":"Case Comprehensive Cancer Center","startDate":"2026-05-01","conditions":"Nonmelanoma Skin Cancer, Basal Cell Carcinoma, Squamous Cell Carcinoma","enrollment":54},{"nctId":"NCT06551285","phase":"NA","title":"Study of the Effect of a Nutritional Supplement on Microbiota, Metabolic Control, Inflammatory Profile, and Quality of Life in Patients With Polycystic Ovary Syndrome.","status":"RECRUITING","sponsor":"Celia Bañuls","startDate":"2024-02-01","conditions":"Polycystic Ovary Syndrome, Metabolic Syndrome","enrollment":120},{"nctId":"NCT07391254","phase":"NA","title":"Omega-3 Supplementation and Mental Health in College Students","status":"COMPLETED","sponsor":"University of Colorado, Colorado Springs","startDate":"2024-08-29","conditions":"Mental Health, Vitamin D","enrollment":103},{"nctId":"NCT06250283","phase":"NA","title":"Resveratrol for the Prevention of Bone Loss in Postmenopausal Women","status":"COMPLETED","sponsor":"University of Delaware","startDate":"2024-02-02","conditions":"Low Bone Mass","enrollment":52},{"nctId":"NCT07448974","phase":"PHASE3","title":"Vitamin D and Type 2 Diabetes - 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Bønnelykke","startDate":"2024-12-20","conditions":"Asthma, Respiratory Tract Infections, Gastrointestinal Infection","enrollment":2000},{"nctId":"NCT02962102","phase":"PHASE2","title":"Activated Vitamin D for the Prevention and Treatment of Acute Kidney Injury","status":"COMPLETED","sponsor":"David Leaf","startDate":"2017-04-03","conditions":"Critically Ill, Acute Kidney Injury","enrollment":150},{"nctId":"NCT05459298","phase":"NA","title":"ViDES Trial (Vitamin D Extra Supplementation)","status":"ACTIVE_NOT_RECRUITING","sponsor":"The University of Texas Health Science Center, Houston","startDate":"2022-09-06","conditions":"Vitamin D Deficiency","enrollment":180},{"nctId":"NCT05694689","phase":"NA","title":"Randomized Trial of Enteral Vitamin D Supplementation in Infants < 28 Weeks Gestational Age or <1000 Grams Birth Weight","status":"RECRUITING","sponsor":"The University of Texas Health Science Center, Houston","startDate":"2023-02-15","conditions":"Vitamin D 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