330 completed, 61 unknown, 22 recruiting, 15 terminated. 460 Not applicable.
| Phase | Trials | Status |
|---|---|---|
| Not applicable | 460 | Completed 330, Unknown 61, Recruiting 22, Terminated 15, Not yet recruiting 12, Withdrawn 11, Active not recruiting 7, Enrolling by invitation 1, Suspended 1 |
Follow Avitaminosis: new trials by email Literature Review of Avitaminosis trials Research Report on Avitaminosis
Tick up to 5 trials to compare them side by side (eligibility, arms, endpoints, adverse events) in a Literature Matrix.
| Trial | Phase | Status | Sponsor | Enrollment | Start | Updated |
|---|---|---|---|---|---|---|
| The Effectiveness of a Weight-dependent Algorithm for Dosing Vitamin D. Vitamin D3, Calcium, and Vitamin C - Hypovitaminosis D | Not applicable | Not yet recruiting | Atlantic Health System | 200 | 2027-01-01 | 2026-10-20 |
| The OK Daily Study Combined MK-7 + vitamin D3 drops, Vitamin D3 Drops, MK-7 capsules - Infant Vitamin K Status, Vitamin K Deficiency Bleeding | Not applicable | Not yet recruiting | Norfolk and Norwich University Hospitals NHS Foundation Trust | 134 | 2026-10-01 | 2026-09-04 |
| Evaluation of the Clinical and Psychological Impact of Vitamin D Replacement in Adolescent Females at Risk for Polycystic Ovarian Syndrome (PCOS) Vitamin D 4000IU daily, Placebo - Polycystic Ovarian Syndrome in Adolescent Females, Vitamin D Deficiency | Not applicable | Recruiting | Yale University | 60 | 2026-09-01 | 2026-08-20 |
| Morphology in Oral Rare Syndromes & Artificial Intelligence for Clinical Diagnosis intra-oral 3D optical impression - Osteogenesis Imperfecta, Rare Bone Disorders | Not applicable | Not yet recruiting | University Hospital, Bordeaux | 240 | 2026-09-01 | 2026-06-24 |
| Vitamin A Supplementation and Breast Milk Vitamin A Levels in Mothers of Preterm Infants Oral multivitamin containing vitamin A - Premature, Preterm Infant Health | Not applicable | Not yet recruiting | University of Mississippi Medical Center | 20 | 2026-08-01 | 2026-07-30 |
| Link Between ASCorbemia Level and Osteoporosis Plasma vitamin C assessment - Osteoporosis, Vitamin C Deficiency | Not applicable | Not yet recruiting | Centre Hospitalier Universitaire de Nice | 40 | 2026-07-01 | 2026-06-22 |
| Medium Cut-Off and High-Flux Membranes on Mineral and Bone Metabolism in Hemodialysis Patients Medium Cut-Off Hemodialysis Membrane, High-Flux Hemodialysis Membrane - End Stage Kidney Disease (ESKD), Hemodialysis | Not applicable | Active not recruiting | Gazi University | 30 | 2026-07-01 | 2026-09-14 |
| The Effect of Vitamin D Supplementation on the Anti-inflammatory Response in Periodontal Diseases Non-surgical periodontal treatment, Vitamin D administration, Oral Hygiene Education and Patient Motivation - Periodontal Diseases, Gingivitis | Not applicable | Recruiting | Recep Tayyip Erdogan University Training and Research Hospital | 120 | 2026-06-03 | 2026-06-10 |
| The Role of Urinary RhoA, NGF, and BDNF Levels in Overactive Bladder and Vitamin D Deficiency Urotherapy - Overactive Bladder, Vitamin D Deficiency | Not applicable | Not yet recruiting | Tarik Emre Sener | 52 | 2026-05-01 | 2026-04-07 |
| Effect of Vitamin D Supplementation on Brain Waves in Female Major Depressive Disorder Patients With Hypovitaminosis D Dietary vitamin D - Major Depressive Disorder (MDD), Hypovitaminosis D | Not applicable | Enrolling by invitation | Bangladesh Medical University | 34 | 2026-04-25 | 2026-05-12 |
| Folic Acid Salt Study (FISFA Zambia) Fortified Iodized Salt with Folic Acid (FISFA) - Folate Deficiency, Neural Tube Defects | Not applicable | Recruiting | University of Alabama at Birmingham | 250 | 2026-04-10 | 2026-06-29 |
| Oral Versus Intravenous Vitamin B12 Replacement in Hemodialysis Patients Mecobalamin IV Injection, Mecobalamin Tablets - Vitamin B12 Deficiency, Renal Failure , Chronic | Not applicable | Completed | Jinnah Hospital | 60 | 2026-02-22 | 2026-08-24 |
| High-Dose vs Standard Ergocalciferol for Vitamin D Normalization in Aggressive Non-Hodgkin Lymphoma High-Dose Loading Ergocalciferol, Standard Weekly Ergocalciferol - Vitamin D 25-Hydroxylase Deficiency, Lymphoma Non-Hodgkin | Not applicable | Not yet recruiting | Phramongkutklao College of Medicine and Hospital | 52 | 2026-02-01 | 2026-01-26 |
| Effects of Different Vitamin D3 Formulations in Vitamin D-Deficient Adults Experimental 1 (powdered supplement), Experimental 2 (oily supplement) - Vitamin D Deficiency | Not applicable | Recruiting | Center for Health Sciences, Serbia | 20 | 2025-12-15 | 2026-01-05 |
| Is There a Benefit From Addition of Exercise in Diabetic Patients With ED Who Complain Low Vitamin D? exercise and vitamin D intake, vitamin D intake - Diabetes Mellitus, Erectile Dysfunction | Not applicable | Recruiting | Cairo University | 40 | 2025-12-05 | 2026-01-26 |
| The Effect of REgulation of PArathyroId hoRmone in Patients With Chronic Kidney Disease to Investigate the Change in Bone Mineral Density Treat to target - Chronic Kidney Disease Mineral and Bone Disorder | Not applicable | Recruiting | Herlev Hospital | 70 | 2025-11-20 | 2026-01-06 |
| A Household-Based Dietary Intervention Study of Vitamin D Fortified Bread in Irish Families Fortified Bread, Unfortified bread - Vitamin D Deficiency | Not applicable | Completed | University College Cork | 128 | 2025-11-17 | 2026-05-15 |
| Effect of Vitamin D on Postoperative Pain in Symptomatic Irreversible Pulpitis Vitamin D3, Placebo - Pulpitis - Irreversible, Vitamin D Deficiency | Not applicable | Active not recruiting | Future University in Egypt | 54 | 2025-11-01 | 2026-05-12 |
| Effect of Systemic Vitamin D on Dental Implant Osseointegration Vit D - Dental Implant, Dental Implant Failed | Not applicable | Recruiting | Future University in Egypt | 10 | 2025-11-01 | 2026-07-06 |
| Effectiveness of a Modified Cost-Effective Dietary Plan in Promoting Weight Loss and Preservation of Lean Body Mass in Patients After Bariatric Surgery Low-Cost Post-Bariatric Diet, Standard High-cost Post-Bariatric Diet - Obesity, Bariatric Surgery | Not applicable | Not yet recruiting | Khyber Teaching Hospital | 122 | 2025-10-01 | 2025-08-08 |
Showing 20 of 460. Sign in to see all of them.
Vitamin D Deficiency (336) · Vitamin B 12 Deficiency (34) · Vitamin A Deficiency (31) · Obesity (24) · Insulin Resistance (16) · Renal Insufficiency, Chronic (16) · Folic Acid Deficiency (13) · Breast Feeding (11) · Chronic Kidney Disease-Mineral and Bone Disorder (11) · Hyperhomocysteinemia (11) · Diabetes Mellitus, Type 2 (10) · Bone Diseases, Metabolic (9) · Cardiovascular Diseases (9) · Inflammation (9)
Nutritional and Metabolic Diseases (460) · Nutrition Disorders (459) · Deficiency Diseases (458) · Malnutrition (455) · Metabolic Diseases (96) · Pathological Conditions, Signs and Symptoms (96) · Female Urogenital Diseases and Pregnancy Complications (53) · Urogenital Diseases (53) · Vitamin B Deficiency (53) · Pathologic Processes (52) · Signs and Symptoms (50) · Endocrine System Diseases (43) · Musculoskeletal Diseases (43) · Female Urogenital Diseases (39)
Cholecalciferol (151) · Vitamin D (92) · Ergocalciferols (30) · Vitamin B 12 (14) · Folic Acid (13) · Calcium (12) · Vitamin A (8) · Blood Specimen Collection (6) · Ascorbic Acid (4) · Calcitriol (4) · Calcium Carbonate (4) · Sugars (4) · Vitamin E (4) · 5-methyltetrahydrofolate (3) · Control Groups (3)
University of Wisconsin, Madison (9) · USDA, Western Human Nutrition Research Center (8) · Creighton University (7) · Massachusetts General Hospital (7) · Boston University (6) · Cairo University (6) · University College Cork (6) · Applied Science Private University (5) · National Taiwan University Hospital (5) · University of Alabama at Birmingham (5) · Bangladesh Medical University (4) · Hospices Civils de Lyon (4) · Meir Medical Center (4) · University of Aarhus (4) · University of California, Davis (4)
United States (152) · United Kingdom (24) · Egypt (16) · Mexico (15) · Turkey (Türkiye) (14) · Israel (13) · China (12) · Denmark (10) · Canada (9) · France (9) · Pakistan (9) · Bangladesh (8) · Ireland (8) · Poland (8) · Taiwan (7)
Mahmoud S Abu-Samak, PhD (4) · Mary S McCarthy, PhD (3) · Michael F Holick, PhD, MD (3) · Patricia Loranca-Moreno, M.D., M.Sc. (3) · Alida Melse-Boonstra, PhD (2) · Betty J Burri, PhD (2) · Charles B Stephensen, PhD (2) · David Martins, MD (2) · Ishir Bhan, MD MPH (2) · J C Gallagher, MD (2) · Laura A Armas, MD (2) · Lea Bentur, Prof. (2) · Lora Iannotti, PhD (2)
PMID 33305842, PMID 39077939, PMID 24025626, PMID 26151421, PMID 33158822, PMID 10916520, PMID 11146455, PMID 11158062, PMID 11271856, PMID 14985208, PMID 16846498, PMID 17693256, PMID 17927502, PMID 17931488, PMID 18029478, PMID 18180395, PMID 18238736, PMID 18302509, PMID 18326608, PMID 18362359, PMID 18400738, PMID 18595990, PMID 18653426, PMID 18711029, PMID 18977726, PMID 18991184, PMID 19063829, PMID 19158217, PMID 19190070, PMID 19515736, PMID 19778452, PMID 20056760, PMID 20067648, PMID 20427729, PMID 20660028, PMID 21118827, PMID 21270380, PMID 21289249, PMID 21430249, PMID 21492489, PMID 21600388, PMID 21628364, PMID 21646368, PMID 21717916, PMID 22059957, PMID 22234628, PMID 22248486, PMID 22258982, PMID 22300739, PMID 22365730
K23DK073356 (2), 1RC1HD063562 (1), 2016 (1), 2019 (1), K23AR050995 (1), K23DK081677 (1), K23RR021891 (1), KL2TR003168 (1), M01RR000051 (1), P30AG028747 (1), P30CA036727 (1), R01AG015982 (1), R01AG028168 (1), R01DK032640 (1), R01EY036005 (1)